Xenon Objectwise Summary

Generated by EventStudio 1.0.2 on 22-Oct-00 19:28

V5.2 - V5.2: Successful call

Legs Taken:

• E1 slot available for V5.2 Subscriber
• DTMF Dialling Subscriber
• Complete Dialling
• Routing is successful
• Called Subscriber is free
• Called Subscriber answers
• Calling Subscriber hangs up

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_ack from ss_mgr
33. Send interface (switch) to ss_mgr
34. Change state to "Awaiting Called Status"
35. Send call_request to v5_mgr2
36. Receive call_request_ack from v5_call2
37. Send interface (unswitch, routing_tone) to tone_mgr1
38. Change state to "Awaiting Answer"
39. Start timer tans
40. Send interface (switch, ring_back_tone) to tone_mgr1
41. Receive answer from v5_call2
42. Stop timer tans
43. Send answer_ack to v5_call2
44. Send interface (unswitch, ring_back_tone) to tone_mgr1
45. Change state to "Conversation"
46. Receive signal (onhook) from env_l
47. Start timer tsignal_ack
48. Send signal_ack to env_l
49. Stop timer tsignal_ack
50. Change state to "Releasing Path"
51. Send resource_free to ss_mgr
52. Send interface (unswitch) to ss_mgr
53. Receive resource_free_ack from ss_mgr
54. Change state to "Indicating Release"
55. Send call_release to v5_call2
56. Receive call_release_ack from v5_call2
57. Change state to "Clearing"
58. Send deallocation to env_l
59. Start timer tdeallocation_comp
60. Receive deallocation_comp from env_l
61. Stop timer tdeallocation_comp
62. Send resource_free to E1_mgr1
63. Change state to "Aborting"
64. Send disconnect to env_l
65. Start timer tdisconnect_comp
66. Receive disconnect_comp from env_l
67. Stop timer tdisconnect_comp
68. Send call_over to v5_mgr1
69. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, ring_back_tone) from v5_call1
11. Begin action "Feed Ring back tone"
12. Receive interface (unswitch, ring_back_tone) from v5_call1
13. End action "Feed Ring back tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to v5_call1
5. Receive interface (switch) from v5_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from v5_call1
10. Receive interface (unswitch) from v5_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to v5_call1

Tone_mgr2 Interfaces

1. Receive interface (switch, congestion_tone) from v5_call2
2. Begin action "Feed Congestion tone"
3. Receive interface (unswitch, congestion_tone) from v5_call2
4. End action "Feed Congestion tone"

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

E1_mgr2 Interfaces

1. Receive resource_allocate from v5_call2
2. Allocate resource "E1 Slot towards Called Subscriber"
3. Send resource_allocate_ack to v5_call2
4. Receive resource_free from v5_call2
5. Free resource "E1 Slot towards Called Subscriber"

V5_call2 Interfaces

1. Task v5_call2 is created by v5_mgr2
2. Change state to "Idle"
3. Receive call_request from v5_mgr2
4. Send call_request_ack to v5_call1
5. Change state to "Allocating Slot for Terminating"
6. Send resource_allocate to E1_mgr2
7. Receive resource_allocate_ack from E1_mgr2
8. Send allocation to env_r
9. Start timer tallocation_comp
10. Receive allocation_comp from env_r
11. Stop timer tallocation_comp
12. Change state to "Starting Ringing"
13. Send establish (ringing) to env_r
14. Start timer testablish_ack
15. Receive establish_ack from env_r
16. Stop timer testablish_ack
17. Change state to "Ringing"
18. Receive signal (offhook) from env_r
19. Send signal_ack to env_r
20. Change state to "Indicating Called Response"
21. Send answer to v5_call1
22. Receive answer_ack from v5_call1
23. Change state to "Conversation: No CSH case"
24. Receive call_release from v5_call1
25. Send call_release_ack to v5_call1
26. Change state to "Feeding Congestion tone"
27. Send interface (switch, congestion_tone) to tone_mgr2
28. Receive signal (onhook) from env_r
29. Send signal_ack to env_r
30. Send interface (unswitch, congestion_tone) to tone_mgr2
31. Change state to "Clearing"
32. Send deallocation to env_r
33. Start timer tdeallocation_comp
34. Receive deallocation_comp from env_r
35. Stop timer tdeallocation_comp
36. Send resource_free to E1_mgr2
37. Change state to "Aborting"
38. Send disconnect to env_r
39. Start timer tdisconnect_comp
40. Receive disconnect_comp from env_r
41. Stop timer tdisconnect_comp
42. Send call_over to v5_mgr2
43. Task v5_call2 is deleted by v5_mgr2

V5_mgr2 Interfaces

1. Receive call_request from v5_call1
2. Allocate resource "Called Port"
3. Create task v5_call2
4. Send call_request to v5_call2
5. Receive call_over from v5_call2
6. Delete task v5_call2
7. Free resource "Called Port"

V5.2 - V5.2: CSH timeout

Legs Taken:

• E1 slot available for V5.2 Subscriber
• DTMF Dialling Subscriber
• Complete Dialling
• Routing is successful
• Called Subscriber is free
• Called Subscriber answers
• Called Subscriber goes onhook

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_ack from ss_mgr
33. Send interface (switch) to ss_mgr
34. Change state to "Awaiting Called Status"
35. Send call_request to v5_mgr2
36. Receive call_request_ack from v5_call2
37. Send interface (unswitch, routing_tone) to tone_mgr1
38. Change state to "Awaiting Answer"
39. Start timer tans
40. Send interface (switch, ring_back_tone) to tone_mgr1
41. Receive answer from v5_call2
42. Stop timer tans
43. Send answer_ack to v5_call2
44. Send interface (unswitch, ring_back_tone) to tone_mgr1
45. Change state to "Conversation"
46. Receive call_release from v5_call2
47. Change state to "Releasing Path, Congestion tone to be fed"
48. Send resource_free to ss_mgr
49. Send interface (unswitch) to ss_mgr
50. Receive resource_free_ack from ss_mgr
51. Change state to "Indicating Release, Congestion tone to be fed"
52. Send call_release to v5_call2
53. Receive call_release_ack from v5_call2
54. Change state to "Signalling release"
55. Send signal (reduced_battery) to env_l
56. Start timer tsignal_ack
57. Receive signal_ack from env_l
58. Stop timer tsignal_ack
59. Change state to "Feeding Congestion tone"
60. Send interface (switch, congestion_tone) to tone_mgr1
61. Send interface (unswitch, congestion_tone) to tone_mgr1
62. Change state to "Feeding Parking tone"
63. Send interface (switch, parking_tone) to tone_mgr1
64. Receive signal (onhook) from env_l
65. Send signal_ack to env_l
66. Send interface (unswitch, parking_tone) to tone_mgr1
67. Change state to "Clearing"
68. Send deallocation to env_l
69. Start timer tdeallocation_comp
70. Receive deallocation_comp from env_l
71. Stop timer tdeallocation_comp
72. Send resource_free to E1_mgr1
73. Change state to "Aborting"
74. Send disconnect to env_l
75. Start timer tdisconnect_comp
76. Receive disconnect_comp from env_l
77. Stop timer tdisconnect_comp
78. Send call_over to v5_mgr1
79. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, ring_back_tone) from v5_call1
11. Begin action "Feed Ring back tone"
12. Receive interface (unswitch, ring_back_tone) from v5_call1
13. End action "Feed Ring back tone"
14. Receive interface (switch, congestion_tone) from v5_call1
15. Begin action "Feed Congestion tone"
16. Receive interface (unswitch, congestion_tone) from v5_call1
17. End action "Feed Congestion tone"
18. Receive interface (switch, parking_tone) from v5_call1
19. Begin action "Feed Parking tone"
20. Receive interface (unswitch, parking_tone) from v5_call1
21. End action "Feed Parking tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to v5_call1
5. Receive interface (switch) from v5_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from v5_call1
10. Receive interface (unswitch) from v5_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to v5_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

E1_mgr2 Interfaces

1. Receive resource_allocate from v5_call2
2. Allocate resource "E1 Slot towards Called Subscriber"
3. Send resource_allocate_ack to v5_call2
4. Receive resource_free from v5_call2
5. Free resource "E1 Slot towards Called Subscriber"

V5_call2 Interfaces

1. Task v5_call2 is created by v5_mgr2
2. Change state to "Idle"
3. Receive call_request from v5_mgr2
4. Send call_request_ack to v5_call1
5. Change state to "Allocating Slot for Terminating"
6. Send resource_allocate to E1_mgr2
7. Receive resource_allocate_ack from E1_mgr2
8. Send allocation to env_r
9. Start timer tallocation_comp
10. Receive allocation_comp from env_r
11. Stop timer tallocation_comp
12. Change state to "Starting Ringing"
13. Send establish (ringing) to env_r
14. Start timer testablish_ack
15. Receive establish_ack from env_r
16. Stop timer testablish_ack
17. Change state to "Ringing"
18. Receive signal (offhook) from env_r
19. Send signal_ack to env_r
20. Change state to "Indicating Called Response"
21. Send answer to v5_call1
22. Receive answer_ack from v5_call1
23. Change state to "Conversation: No CSH case"
24. Receive signal (onhook) from env_r
25. Send signal_ack to env_r
26. Start timer tcsh
27. Change state to "Conversation: CSH case"
28. Receive signal (offhook) from env_r
29. Stop timer tcsh
30. Send signal_ack to env_r
31. Change state to "Conversation: No CSH case"
32. Receive signal (onhook) from env_r
33. Send signal_ack to env_r
34. Start timer tcsh
35. Change state to "Conversation: CSH case"
36. Timer tcsh times out
37. Change state to "Awaiting Release Confirm"
38. Send call_release to v5_call1
39. Receive call_release from v5_call1
40. Send call_release_ack to v5_call1
41. Change state to "Clearing"
42. Send deallocation to env_r
43. Start timer tdeallocation_comp
44. Receive deallocation_comp from env_r
45. Stop timer tdeallocation_comp
46. Send resource_free to E1_mgr2
47. Change state to "Aborting"
48. Send disconnect to env_r
49. Start timer tdisconnect_comp
50. Receive disconnect_comp from env_r
51. Stop timer tdisconnect_comp
52. Send call_over to v5_mgr2
53. Task v5_call2 is deleted by v5_mgr2

V5_mgr2 Interfaces

1. Receive call_request from v5_call1
2. Allocate resource "Called Port"
3. Create task v5_call2
4. Send call_request to v5_call2
5. Receive call_over from v5_call2
6. Delete task v5_call2
7. Free resource "Called Port"

V5.2: E1 slot not available

Leg Taken:

• E1 slot not available for V5.2 Subscriber

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Change state to "Aborting"
8. Send disconnect to env_l
9. Start timer tdisconnect_comp
10. Receive disconnect_comp from env_l
11. Stop timer tdisconnect_comp
12. Send call_over to v5_mgr1
13. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1

V5.2: Partial dialling

Legs Taken:

• E1 slot available for V5.2 Subscriber
• DTMF Dialling Subscriber
• No Dialling or Partial Dialling

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive ll0 from v5_call1
6. Receive call_over from v5_call1
7. Delete task v5_call1
8. Free resource "Calling Port"
9. Take action "Mark Calling Port in LLO"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Timer tidt times out
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send resource_free to dsp1
20. Change state to "Signalling Release"
21. Send signal (reduced_battery) to env_l
22. Start timer tsignal_ack
23. Receive signal_ack from env_l
24. Stop timer tsignal_ack
25. Change state to "Feeding Congestion tone"
26. Send interface (switch, congestion_tone) to tone_mgr1
27. Send interface (unswitch, congestion_tone) to tone_mgr1
28. Change state to "Feeding Parking tone"
29. Send interface (switch, parking_tone) to tone_mgr1
30. Send interface (unswitch, parking_tone) to tone_mgr1
31. Send ll0 to v5_mgr1
32. Change state to "Clearing"
33. Send deallocation to env_l
34. Start timer tdeallocation_comp
35. Receive deallocation_comp from env_l
36. Stop timer tdeallocation_comp
37. Send resource_free to E1_mgr1
38. Change state to "Aborting"
39. Send disconnect to env_l
40. Start timer tdisconnect_comp
41. Receive disconnect_comp from env_l
42. Stop timer tdisconnect_comp
43. Send call_over to v5_mgr1
44. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, congestion_tone) from v5_call1
6. Begin action "Feed Congestion tone"
7. Receive interface (unswitch, congestion_tone) from v5_call1
8. End action "Feed Congestion tone"
9. Receive interface (switch, parking_tone) from v5_call1
10. Begin action "Feed Parking tone"
11. Receive interface (unswitch, parking_tone) from v5_call1
12. End action "Feed Parking tone"

V5.2: Directory number unknown

Legs Taken:

• E1 slot available for V5.2 Subscriber
• DTMF Dialling Subscriber
• Complete Dialling
• Call failed: DN unknown or All trunks to the Route are busy

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_nack from ss_mgr
33. Send interface (unswitch, routing_tone) to tone_mgr1
34. Change state to "Signalling Release"
35. Send signal (reduced_battery) to env_l
36. Start timer tsignal_ack
37. Receive signal_ack from env_l
38. Stop timer tsignal_ack
39. Change state to "Feeding Congestion tone"
40. Send interface (switch, congestion_tone) to tone_mgr1
41. Receive signal (onhook) from env_l
42. Send signal_ack to env_l
43. Send interface (unswitch, congestion_tone) to tone_mgr1
44. Change state to "Clearing"
45. Send deallocation to env_l
46. Start timer tdeallocation_comp
47. Receive deallocation_comp from env_l
48. Stop timer tdeallocation_comp
49. Send resource_free to E1_mgr1
50. Change state to "Aborting"
51. Send disconnect to env_l
52. Start timer tdisconnect_comp
53. Receive disconnect_comp from env_l
54. Stop timer tdisconnect_comp
55. Send call_over to v5_mgr1
56. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, congestion_tone) from v5_call1
11. Begin action "Feed Congestion tone"
12. Receive interface (unswitch, congestion_tone) from v5_call1
13. End action "Feed Congestion tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Send resource_allocate_nack to v5_call1

V5.2: Called subscriber is busy

Legs Taken:

• E1 slot available for V5.2 Subscriber
• DTMF Dialling Subscriber
• Complete Dialling
• Routing is successful
• Called Subscriber is busy
• Calling Subscriber goes onhook on hearing Busy tone

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_ack from ss_mgr
33. Send interface (switch) to ss_mgr
34. Change state to "Awaiting Called Status"
35. Send call_request to v5_mgr2
36. Receive call_request_nack from v5_mgr2
37. Send interface (unswitch, routing_tone) to tone_mgr1
38. Change state to "Releasing Path, Busy tone to be fed"
39. Send interface (switch, busy_tone) to tone_mgr1
40. Send resource_free to ss_mgr
41. Send interface (unswitch) to ss_mgr
42. Receive resource_free_ack from ss_mgr
43. Change state to "Feeding Busy tone"
44. Receive signal (onhook) from env_l
45. Send signal_ack to env_l
46. Send interface (unswitch, busy_tone) to tone_mgr1
47. Change state to "Clearing"
48. Send deallocation to env_l
49. Start timer tdeallocation_comp
50. Receive deallocation_comp from env_l
51. Stop timer tdeallocation_comp
52. Send resource_free to E1_mgr1
53. Change state to "Aborting"
54. Send disconnect to env_l
55. Start timer tdisconnect_comp
56. Receive disconnect_comp from env_l
57. Stop timer tdisconnect_comp
58. Send call_over to v5_mgr1
59. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, busy_tone) from v5_call1
11. Begin action "Feed Busy tone"
12. Receive interface (unswitch, busy_tone) from v5_call1
13. End action "Feed Busy tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to v5_call1
5. Receive interface (switch) from v5_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from v5_call1
10. Receive interface (unswitch) from v5_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to v5_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

V5_mgr2 Interfaces

1. Receive call_request from v5_call1
2. Send call_request_nack to v5_call1

V5.2: Called subscriber does not answer

Legs Taken:

• E1 slot available for V5.2 Subscriber
• DTMF Dialling Subscriber
• Complete Dialling
• Routing is successful
• Called Subscriber is free
• Called Subscriber does not answer
• Calling Subscriber clears on hearing Congestion

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_ack from ss_mgr
33. Send interface (switch) to ss_mgr
34. Change state to "Awaiting Called Status"
35. Send call_request to v5_mgr2
36. Receive call_request_ack from v5_call2
37. Send interface (unswitch, routing_tone) to tone_mgr1
38. Change state to "Awaiting Answer"
39. Start timer tans
40. Send interface (switch, ring_back_tone) to tone_mgr1
41. Receive call_release from v5_call2
42. Timer tans times out
43. Send interface (unswitch, ring_back_tone) to tone_mgr1
44. Change state to "Releasing Path, Congestion tone to be fed"
45. Send interface (switch, congestion_tone) to tone_mgr1
46. Send resource_free to ss_mgr
47. Send interface (unswitch) to ss_mgr
48. Receive resource_free_ack from ss_mgr
49. Change state to "Indicating Release, Congestion tone to be fed"
50. Send call_release to v5_call2
51. Receive call_release_ack from v5_call2
52. Change state to "Signalling Release"
53. Send signal (reduced_battery) to env_l
54. Start timer tsignal_ack
55. Receive signal_ack from env_l
56. Stop timer tsignal_ack
57. Change state to "Feeding Congestion tone"
58. Receive signal (onhook) from env_l
59. Send signal_ack to env_l
60. Send interface (unswitch, congestion_tone) to tone_mgr1
61. Change state to "Clearing"
62. Send deallocation to env_l
63. Start timer tdeallocation_comp
64. Receive deallocation_comp from env_l
65. Stop timer tdeallocation_comp
66. Send resource_free to E1_mgr1
67. Change state to "Aborting"
68. Send disconnect to env_l
69. Start timer tdisconnect_comp
70. Receive disconnect_comp from env_l
71. Stop timer tdisconnect_comp
72. Send call_over to v5_mgr1
73. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, ring_back_tone) from v5_call1
11. Begin action "Feed Ring back tone"
12. Receive interface (unswitch, ring_back_tone) from v5_call1
13. End action "Feed Ring back tone"
14. Receive interface (switch, congestion_tone) from v5_call1
15. Begin action "Feed Congestion tone"
16. Receive interface (unswitch, congestion_tone) from v5_call1
17. End action "Feed Congestion tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to v5_call1
5. Receive interface (switch) from v5_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from v5_call1
10. Receive interface (unswitch) from v5_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to v5_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

E1_mgr2 Interfaces

1. Receive resource_allocate from v5_call2
2. Allocate resource "E1 Slot towards Called Subscriber"
3. Send resource_allocate_ack to v5_call2
4. Receive resource_free from v5_call2
5. Free resource "E1 Slot towards Called Subscriber"

V5_call2 Interfaces

1. Task v5_call2 is created by v5_mgr2
2. Change state to "Idle"
3. Receive call_request from v5_mgr2
4. Send call_request_ack to v5_call1
5. Change state to "Allocating Slot for Terminating"
6. Send resource_allocate to E1_mgr2
7. Receive resource_allocate_ack from E1_mgr2
8. Send allocation to env_r
9. Start timer tallocation_comp
10. Receive allocation_comp from env_r
11. Stop timer tallocation_comp
12. Change state to "Starting Ringing"
13. Send establish (ringing) to env_r
14. Start timer testablish_ack
15. Receive establish_ack from env_r
16. Stop timer testablish_ack
17. Change state to "Ringing"
18. Change state to "Awaiting Release Confirm"
19. Send call_release to v5_call1
20. Receive call_release from v5_call1
21. Send call_release_ack to v5_call1
22. Change state to "Clearing"
23. Send deallocation to env_r
24. Start timer tdeallocation_comp
25. Receive deallocation_comp from env_r
26. Stop timer tdeallocation_comp
27. Send resource_free to E1_mgr2
28. Change state to "Aborting"
29. Send disconnect to env_r
30. Start timer tdisconnect_comp
31. Receive disconnect_comp from env_r
32. Stop timer tdisconnect_comp
33. Send call_over to v5_mgr2
34. Task v5_call2 is deleted by v5_mgr2

V5_mgr2 Interfaces

1. Receive call_request from v5_call1
2. Allocate resource "Called Port"
3. Create task v5_call2
4. Send call_request to v5_call2
5. Receive call_over from v5_call2
6. Delete task v5_call2
7. Free resource "Called Port"

ISUP - ISUP: Successful call; release from next exchange

Legs Taken:

• Outgoing call through
• Call release received from called side

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Receive sam from env_l
5. Send resource_allocate to ss_mgr
6. Receive resource_allocate_ack from ss_mgr
7. Send interface (switch) to ss_mgr
8. Send call_request to isup_mgr2
9. Receive call_request_ack from isup_call2
10. Receive crg from isup_call2
11. Send crg to env_l
12. Receive acm from isup_call2
13. Send acm to env_l
14. Start timer tans
15. Receive answer from isup_call2
16. Stop timer tans
17. Send answer_ack to isup_call2
18. Send answer to env_l
19. Receive call_release from isup_call2
20. Send call_release_ack to isup_call2
21. Send resource_free to ss_mgr
22. Receive resource_free_ack from ss_mgr
23. Send rel to env_l
24. Start timer trlc
25. Receive rlc from env_l
26. Stop timer trlc
27. Send call_over to isup_mgr1
28. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Send interface (unswitch) to ts_mgr1
11. Send interface (unswitch) to ts_mgr2
12. End action "Switch Path"
13. Free resource "Path"
14. Send resource_free_ack to isup_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Isup_call2 Interfaces

1. Task isup_call2 is created by isup_mgr2
2. Receive call_request from isup_mgr2
3. Send call_request_ack to isup_call1
4. Send iam to env_r
5. Start timer tacm
6. Receive crg from env_r
7. Send crg to isup_call1
8. Receive acm from env_r
9. Stop timer tacm
10. Send acm to isup_call1
11. Receive answer from env_r
12. Send answer to isup_call1
13. Receive answer_ack from isup_call1
14. Receive rel from env_r
15. Send rlc to env_r
16. Send call_release to isup_call1
17. Receive call_release_ack from isup_call1
18. Send call_over to isup_mgr2
19. Task isup_call2 is deleted by isup_mgr2

Isup_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Allocate resource "Outgoing Trunk"
3. Create task isup_call2
4. Send call_request to isup_call2
5. Receive call_over from isup_call2
6. Delete task isup_call2
7. Free resource "Outgoing Trunk"

ISUP - ISUP: Successful call; release from previous exchange

Legs Taken:

• Outgoing call through
• Call release received from calling side

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Receive sam from env_l
5. Send resource_allocate to ss_mgr
6. Receive resource_allocate_ack from ss_mgr
7. Send interface (switch) to ss_mgr
8. Send call_request to isup_mgr2
9. Receive call_request_ack from isup_call2
10. Receive crg from isup_call2
11. Send crg to env_l
12. Receive acm from isup_call2
13. Send acm to env_l
14. Start timer tans
15. Receive answer from isup_call2
16. Stop timer tans
17. Send answer_ack to isup_call2
18. Send answer to env_l
19. Receive rel from env_l
20. Send rlc to env_l
21. Send resource_free to ss_mgr
22. Receive resource_free_ack from ss_mgr
23. Send call_release to isup_call2
24. Receive call_release_ack from isup_call2
25. Send call_over to isup_mgr1
26. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Send interface (unswitch) to ts_mgr1
11. Send interface (unswitch) to ts_mgr2
12. End action "Switch Path"
13. Free resource "Path"
14. Send resource_free_ack to isup_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Isup_call2 Interfaces

1. Task isup_call2 is created by isup_mgr2
2. Receive call_request from isup_mgr2
3. Send call_request_ack to isup_call1
4. Send iam to env_r
5. Start timer tacm
6. Receive crg from env_r
7. Send crg to isup_call1
8. Receive acm from env_r
9. Stop timer tacm
10. Send acm to isup_call1
11. Receive answer from env_r
12. Send answer to isup_call1
13. Receive answer_ack from isup_call1
14. Receive call_release from isup_call1
15. Send call_release_ack to isup_call1
16. Send rel to env_r
17. Start timer trlc
18. Receive rlc from env_r
19. Stop timer trlc
20. Send call_over to isup_mgr2
21. Task isup_call2 is deleted by isup_mgr2

Isup_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Allocate resource "Outgoing Trunk"
3. Create task isup_call2
4. Send call_request to isup_call2
5. Receive call_over from isup_call2
6. Delete task isup_call2
7. Free resource "Outgoing Trunk"

ISUP - ISUP: Outgoing call failed

Leg Taken:

• Outgoing call failed

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Receive sam from env_l
5. Send resource_allocate to ss_mgr
6. Receive resource_allocate_ack from ss_mgr
7. Send interface (switch) to ss_mgr
8. Send call_request to isup_mgr2
9. Receive call_request_ack from isup_call2
10. Receive crg from isup_call2
11. Send crg to env_l
12. Receive call_release from isup_call2
13. Send call_release_ack to isup_call2
14. Send resource_free to ss_mgr
15. Receive resource_free_ack from ss_mgr
16. Send rel to env_l
17. Start timer trlc
18. Receive rlc from env_l
19. Stop timer trlc
20. Send call_over to isup_mgr1
21. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Send interface (unswitch) to ts_mgr1
11. Send interface (unswitch) to ts_mgr2
12. End action "Switch Path"
13. Free resource "Path"
14. Send resource_free_ack to isup_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Isup_call2 Interfaces

1. Task isup_call2 is created by isup_mgr2
2. Receive call_request from isup_mgr2
3. Send call_request_ack to isup_call1
4. Send iam to env_r
5. Start timer tacm
6. Receive crg from env_r
7. Send crg to isup_call1
8. Receive rel from env_r
9. Send rlc to env_r
10. Stop timer tacm
11. Send call_release to isup_call1
12. Receive call_release_ack from isup_call1
13. Send call_over to isup_mgr2
14. Task isup_call2 is deleted by isup_mgr2

Isup_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Allocate resource "Outgoing Trunk"
3. Create task isup_call2
4. Send call_request to isup_call2
5. Receive call_over from isup_call2
6. Delete task isup_call2
7. Free resource "Outgoing Trunk"

ISUP - V5.2: Successful call

Legs Taken:

• Called Subscriber is free
• Called Subscriber answers
• Call release received from previous exchange

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Send resource_allocate to ss_mgr
5. Receive resource_allocate_ack from ss_mgr
6. Send interface (switch) to ss_mgr
7. Send call_request to v5_mgr2
8. Receive call_request_ack from v5_call2
9. Send acm to env_l
10. Start timer tans
11. Send interface (switch, ring_back_tone) to tone_mgr1
12. Stop timer tans
13. Receive answer from v5_call2
14. Send answer_ack to v5_call2
15. Send answer to env_l
16. Send interface (unswitch, ring_back_tone) to tone_mgr1
17. Receive rel from env_l
18. Send rlc to env_l
19. Send resource_free to ss_mgr
20. Send interface (unswitch) to ss_mgr
21. Receive resource_free_ack from ss_mgr
22. Send call_release to v5_call2
23. Receive call_release_ack from v5_call2
24. Send call_over to isup_mgr1
25. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, ring_back_tone) from isup_call1
2. Begin action "Feed Ring back tone"
3. Receive interface (unswitch, ring_back_tone) from isup_call1
4. End action "Feed Ring back tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Receive interface (unswitch) from isup_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to isup_call1

Tone_mgr2 Interfaces

1. Receive interface (switch, congestion_tone) from v5_call2
2. Begin action "Feed Congestion tone"
3. Receive interface (unswitch, congestion_tone) from v5_call2
4. End action "Feed Congestion tone"

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

E1_mgr2 Interfaces

1. Receive resource_allocate from v5_call2
2. Allocate resource "E1 Slot towards Called Subscriber"
3. Send resource_allocate_ack to v5_call2
4. Receive resource_free from v5_call2
5. Free resource "E1 Slot towards Called Subscriber"

V5_call2 Interfaces

1. Task v5_call2 is created by v5_mgr2
2. Change state to "Idle"
3. Receive call_request from v5_mgr2
4. Send call_request_ack to isup_call1
5. Change state to "Allocating Slot for Terminating"
6. Send resource_allocate to E1_mgr2
7. Receive resource_allocate_ack from E1_mgr2
8. Send allocation to env_r
9. Start timer tallocation_comp
10. Receive allocation_comp from env_r
11. Stop timer tallocation_comp
12. Change state to "Starting Ringing"
13. Send establish (ringing) to env_r
14. Start timer testablish_ack
15. Receive establish_ack from env_r
16. Stop timer testablish_ack
17. Change state to "Ringing"
18. Receive signal (offhook) from env_r
19. Send signal_ack to env_r
20. Change state to "Indicating Called Response"
21. Send answer to isup_call1
22. Receive answer_ack from isup_call1
23. Change state to "Conversation: No CSH case"
24. Receive call_release from isup_call1
25. Send call_release_ack to isup_call1
26. Change state to "Feeding Congestion tone"
27. Send interface (switch, congestion_tone) to tone_mgr2
28. Receive signal (onhook) from env_r
29. Send signal_ack to env_r
30. Send interface (unswitch, congestion_tone) to tone_mgr2
31. Change state to "Clearing"
32. Send deallocation to env_r
33. Start timer tdeallocation_comp
34. Receive deallocation_comp from env_r
35. Stop timer tdeallocation_comp
36. Send resource_free to E1_mgr2
37. Change state to "Aborting"
38. Send disconnect to env_r
39. Start timer tdisconnect_comp
40. Receive disconnect_comp from env_r
41. Stop timer tdisconnect_comp
42. Send call_over to v5_mgr2
43. Task v5_call2 is deleted by v5_mgr2

V5_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Allocate resource "Called Port"
3. Create task v5_call2
4. Send call_request to v5_call2
5. Receive call_over from v5_call2
6. Delete task v5_call2
7. Free resource "Called Port"

ISUP - V5.2: CSH timeout

Legs Taken:

• Called Subscriber is free
• Called Subscriber answers
• Called Subscriber goes onhook

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Send resource_allocate to ss_mgr
5. Receive resource_allocate_ack from ss_mgr
6. Send interface (switch) to ss_mgr
7. Send call_request to v5_mgr2
8. Receive call_request_ack from v5_call2
9. Send acm to env_l
10. Start timer tans
11. Send interface (switch, ring_back_tone) to tone_mgr1
12. Stop timer tans
13. Receive answer from v5_call2
14. Send answer_ack to v5_call2
15. Send answer to env_l
16. Send interface (unswitch, ring_back_tone) to tone_mgr1
17. Receive call_release from v5_call2
18. Send resource_free to ss_mgr
19. Send interface (unswitch) to ss_mgr
20. Receive resource_free_ack from ss_mgr
21. Send call_release to v5_call2
22. Receive call_release_ack from v5_call2
23. Send rel to env_l
24. Start timer trlc
25. Receive rlc from env_l
26. Stop timer trlc
27. Send call_over to isup_mgr1
28. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, ring_back_tone) from isup_call1
2. Begin action "Feed Ring back tone"
3. Receive interface (unswitch, ring_back_tone) from isup_call1
4. End action "Feed Ring back tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Receive interface (unswitch) from isup_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to isup_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

E1_mgr2 Interfaces

1. Receive resource_allocate from v5_call2
2. Allocate resource "E1 Slot towards Called Subscriber"
3. Send resource_allocate_ack to v5_call2
4. Receive resource_free from v5_call2
5. Free resource "E1 Slot towards Called Subscriber"

V5_call2 Interfaces

1. Task v5_call2 is created by v5_mgr2
2. Change state to "Idle"
3. Receive call_request from v5_mgr2
4. Send call_request_ack to isup_call1
5. Change state to "Allocating Slot for Terminating"
6. Send resource_allocate to E1_mgr2
7. Receive resource_allocate_ack from E1_mgr2
8. Send allocation to env_r
9. Start timer tallocation_comp
10. Receive allocation_comp from env_r
11. Stop timer tallocation_comp
12. Change state to "Starting Ringing"
13. Send establish (ringing) to env_r
14. Start timer testablish_ack
15. Receive establish_ack from env_r
16. Stop timer testablish_ack
17. Change state to "Ringing"
18. Receive signal (offhook) from env_r
19. Send signal_ack to env_r
20. Change state to "Indicating Called Response"
21. Send answer to isup_call1
22. Receive answer_ack from isup_call1
23. Change state to "Conversation: No CSH case"
24. Receive signal (onhook) from env_r
25. Send signal_ack to env_r
26. Start timer tcsh
27. Change state to "Conversation: CSH case"
28. Receive signal (offhook) from env_r
29. Stop timer tcsh
30. Send signal_ack to env_r
31. Change state to "Conversation: No CSH case"
32. Receive signal (onhook) from env_r
33. Send signal_ack to env_r
34. Start timer tcsh
35. Change state to "Conversation: CSH case"
36. Timer tcsh times out
37. Change state to "Awaiting Release Confirm"
38. Send call_release to isup_call1
39. Receive call_release from isup_call1
40. Send call_release_ack to isup_call1
41. Change state to "Clearing"
42. Send deallocation to env_r
43. Start timer tdeallocation_comp
44. Receive deallocation_comp from env_r
45. Stop timer tdeallocation_comp
46. Send resource_free to E1_mgr2
47. Change state to "Aborting"
48. Send disconnect to env_r
49. Start timer tdisconnect_comp
50. Receive disconnect_comp from env_r
51. Stop timer tdisconnect_comp
52. Send call_over to v5_mgr2
53. Task v5_call2 is deleted by v5_mgr2

V5_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Allocate resource "Called Port"
3. Create task v5_call2
4. Send call_request to v5_call2
5. Receive call_over from v5_call2
6. Delete task v5_call2
7. Free resource "Called Port"

ISUP - V5.2: Outgoing call failed

Leg Taken:

• Called Subscriber is busy

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Send resource_allocate to ss_mgr
5. Receive resource_allocate_ack from ss_mgr
6. Send interface (switch) to ss_mgr
7. Send call_request to v5_mgr2
8. Receive call_request_nack from v5_mgr2
9. Send rel to env_l
10. Start timer trlc
11. Receive rlc from env_l
12. Stop timer trlc
13. Send resource_free to ss_mgr
14. Send interface (unswitch) to ss_mgr
15. Receive resource_free_ack from ss_mgr
16. Send call_over to isup_mgr1
17. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Receive interface (unswitch) from isup_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to isup_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

V5_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Send call_request_nack to isup_call1

ISUP - V5.2: Called subscriber does not answer

Legs Taken:

• Called Subscriber is free
• Called Subscriber does not answer

Isup_mgr1 Interfaces

1. Receive iam from env_l
2. Allocate resource "Incoming Trunk"
3. Create task isup_call1
4. Send iam to isup_call1
5. Receive call_over from isup_call1
6. Delete task isup_call1
7. Free resource "Incoming Trunk"

Isup_call1 Interfaces

1. Task isup_call1 is created by isup_mgr1
2. Receive iam from isup_mgr1
3. Receive sam from env_l
4. Send resource_allocate to ss_mgr
5. Receive resource_allocate_ack from ss_mgr
6. Send interface (switch) to ss_mgr
7. Send call_request to v5_mgr2
8. Receive call_request_ack from v5_call2
9. Send acm to env_l
10. Start timer tans
11. Send interface (switch, ring_back_tone) to tone_mgr1
12. Receive call_release from v5_call2
13. Timer tans times out
14. Send interface (unswitch, ring_back_tone) to tone_mgr1
15. Send rel to env_l
16. Start timer trlc
17. Receive rlc from env_l
18. Stop timer trlc
19. Send resource_free to ss_mgr
20. Send interface (unswitch) to ss_mgr
21. Receive resource_free_ack from ss_mgr
22. Send call_release to v5_call2
23. Receive call_release_ack from v5_call2
24. Send call_over to isup_mgr1
25. Task isup_call1 is deleted by isup_mgr1

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, ring_back_tone) from isup_call1
2. Begin action "Feed Ring back tone"
3. Receive interface (unswitch, ring_back_tone) from isup_call1
4. End action "Feed Ring back tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from isup_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to isup_call1
5. Receive interface (switch) from isup_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from isup_call1
10. Receive interface (unswitch) from isup_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to isup_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

E1_mgr2 Interfaces

1. Receive resource_allocate from v5_call2
2. Allocate resource "E1 Slot towards Called Subscriber"
3. Send resource_allocate_ack to v5_call2
4. Receive resource_free from v5_call2
5. Free resource "E1 Slot towards Called Subscriber"

V5_call2 Interfaces

1. Task v5_call2 is created by v5_mgr2
2. Change state to "Idle"
3. Receive call_request from v5_mgr2
4. Send call_request_ack to isup_call1
5. Change state to "Allocating Slot for Terminating"
6. Send resource_allocate to E1_mgr2
7. Receive resource_allocate_ack from E1_mgr2
8. Send allocation to env_r
9. Start timer tallocation_comp
10. Receive allocation_comp from env_r
11. Stop timer tallocation_comp
12. Change state to "Starting Ringing"
13. Send establish (ringing) to env_r
14. Start timer testablish_ack
15. Receive establish_ack from env_r
16. Stop timer testablish_ack
17. Change state to "Ringing"
18. Change state to "Awaiting Release Confirm"
19. Send call_release to isup_call1
20. Receive call_release from isup_call1
21. Send call_release_ack to isup_call1
22. Change state to "Clearing"
23. Send deallocation to env_r
24. Start timer tdeallocation_comp
25. Receive deallocation_comp from env_r
26. Stop timer tdeallocation_comp
27. Send resource_free to E1_mgr2
28. Change state to "Aborting"
29. Send disconnect to env_r
30. Start timer tdisconnect_comp
31. Receive disconnect_comp from env_r
32. Stop timer tdisconnect_comp
33. Send call_over to v5_mgr2
34. Task v5_call2 is deleted by v5_mgr2

V5_mgr2 Interfaces

1. Receive call_request from isup_call1
2. Allocate resource "Called Port"
3. Create task v5_call2
4. Send call_request to v5_call2
5. Receive call_over from v5_call2
6. Delete task v5_call2
7. Free resource "Called Port"

V5.2 - ISUP: Successful call

Leg Taken:

• Outgoing call through

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_ack from ss_mgr
33. Send interface (switch) to ss_mgr
34. Change state to "Awaiting Called Status"
35. Send call_request to isup_mgr2
36. Receive call_request_ack from isup_call2
37. Send interface (unswitch, routing_tone) to tone_mgr1
38. Change state to "Awaiting Answer"
39. Send interface (switch, ring_back_tone) to tone_mgr1
40. Receive crg from isup_call2
41. Receive acm from isup_call2
42. Start timer tans
43. Receive answer from isup_call2
44. Stop timer tans
45. Send answer_ack to isup_call2
46. Send interface (unswitch, ring_back_tone) to tone_mgr1
47. Change state to "Conversation"
48. Receive signal (onhook) from env_l
49. Start timer tsignal_ack
50. Send signal_ack to env_l
51. Stop timer tsignal_ack
52. Change state to "Releasing Path"
53. Send resource_free to ss_mgr
54. Send interface (unswitch) to ss_mgr
55. Receive resource_free_ack from ss_mgr
56. Change state to "Indicating Release"
57. Send call_release to isup_call2
58. Receive call_release_ack from isup_call2
59. Change state to "Clearing"
60. Send deallocation to env_l
61. Start timer tdeallocation_comp
62. Receive deallocation_comp from env_l
63. Stop timer tdeallocation_comp
64. Send resource_free to E1_mgr1
65. Change state to "Aborting"
66. Send disconnect to env_l
67. Start timer tdisconnect_comp
68. Receive disconnect_comp from env_l
69. Stop timer tdisconnect_comp
70. Send call_over to v5_mgr1
71. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, ring_back_tone) from v5_call1
11. Begin action "Feed Ring back tone"
12. Receive interface (unswitch, ring_back_tone) from v5_call1
13. End action "Feed Ring back tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to v5_call1
5. Receive interface (switch) from v5_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from v5_call1
10. Receive interface (unswitch) from v5_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to v5_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Isup_call2 Interfaces

1. Task isup_call2 is created by isup_mgr2
2. Receive call_request from isup_mgr2
3. Send call_request_ack to v5_call1
4. Send iam to env_r
5. Start timer tacm
6. Receive crg from env_r
7. Send crg to v5_call1
8. Receive acm from env_r
9. Stop timer tacm
10. Send acm to v5_call1
11. Receive answer from env_r
12. Send answer to v5_call1
13. Receive answer_ack from v5_call1
14. Receive call_release from v5_call1
15. Send call_release_ack to v5_call1
16. Send rel to env_r
17. Start timer trlc
18. Receive rlc from env_r
19. Stop timer trlc
20. Send call_over to isup_mgr2
21. Task isup_call2 is deleted by isup_mgr2

Isup_mgr2 Interfaces

1. Receive call_request from v5_call1
2. Allocate resource "Outgoing Trunk"
3. Create task isup_call2
4. Send call_request to isup_call2
5. Receive call_over from isup_call2
6. Delete task isup_call2
7. Free resource "Outgoing Trunk"

V5.2 - ISUP: Outgoing call failed

Leg Taken:

• Outgoing call failed

Dsp1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "DTMF Receiver"
3. Send resource_allocate_ack to v5_call1
4. Send signal (digit) to v5_call1
5. Send signal (digit) to v5_call1
6. Send signal (digit) to v5_call1
7. Receive resource_free from v5_call1
8. Free resource "DTMF Receiver"

V5_mgr1 Interfaces

1. Receive establish (offhook) from env_l
2. Allocate resource "Calling Port"
3. Create task v5_call1
4. Send establish (offhook) to v5_call1
5. Receive call_over from v5_call1
6. Delete task v5_call1
7. Free resource "Calling Port"

V5_call1 Interfaces

1. Task v5_call1 is created by v5_mgr1
2. Change state to "Idle"
3. Receive establish (offhook) from v5_mgr1
4. Send establish_ack to env_l
5. Change state to "Allocating Slot for Originating"
6. Send resource_allocate to E1_mgr1
7. Receive resource_allocate_ack from E1_mgr1
8. Send allocation to env_l
9. Start timer tallocation_comp
10. Receive allocation_comp from env_l
11. Stop timer tallocation_comp
12. Change state to "Feeding Dial tone"
13. Send interface (switch, dial_tone) to tone_mgr1
14. Send resource_allocate to dsp1
15. Receive resource_allocate_ack from dsp1
16. Start timer tidt
17. Receive signal (digit) from dsp1
18. Send interface (unswitch, dial_tone) to tone_mgr1
19. Send interface (switch, silence_tone) to tone_mgr1
20. Change state to "Collecting Digits"
21. Stop timer tidt
22. Start timer tidt
23. Receive signal (digit) from dsp1
24. Stop timer tidt
25. Start timer tidt
26. Receive signal (digit) from dsp1
27. Stop timer tidt
28. Send resource_free to dsp1
29. Change state to "Allocating Path"
30. Send interface (switch, routing_tone) to tone_mgr1
31. Send resource_allocate to ss_mgr
32. Receive resource_allocate_ack from ss_mgr
33. Send interface (switch) to ss_mgr
34. Change state to "Awaiting Called Status"
35. Send call_request to isup_mgr2
36. Receive call_request_ack from isup_call2
37. Send interface (unswitch, routing_tone) to tone_mgr1
38. Change state to "Awaiting Answer"
39. Send interface (switch, ring_back_tone) to tone_mgr1
40. Receive crg from isup_call2
41. Receive call_release from isup_call2
42. Send interface (unswitch, ring_back_tone) to tone_mgr1
43. Change state to "Releasing Path, Congestion tone to be fed"
44. Send resource_free to ss_mgr
45. Send interface (unswitch) to ss_mgr
46. Receive resource_free_ack from ss_mgr
47. Change state to "Indicating Release, Congestion tone to be fed"
48. Send call_release to isup_call2
49. Receive call_release_ack from isup_call2
50. Change state to "Signalling Release"
51. Send signal (reduced_battery) to env_l
52. Start timer tsignal_ack
53. Receive signal_ack from env_l
54. Stop timer tsignal_ack
55. Change state to "Feeding Congestion tone"
56. Send interface (switch, congestion_tone) to tone_mgr1
57. Receive signal (onhook) from env_l
58. Send signal_ack to env_l
59. Send interface (unswitch, congestion_tone) to tone_mgr1
60. Change state to "Clearing"
61. Send deallocation to env_l
62. Start timer tdeallocation_comp
63. Receive deallocation_comp from env_l
64. Stop timer tdeallocation_comp
65. Send resource_free to E1_mgr1
66. Change state to "Aborting"
67. Send disconnect to env_l
68. Start timer tdisconnect_comp
69. Receive disconnect_comp from env_l
70. Stop timer tdisconnect_comp
71. Send call_over to v5_mgr1
72. Task v5_call1 is deleted by v5_mgr1

E1_mgr1 Interfaces

1. Receive resource_allocate from v5_call1
2. Allocate resource "E1 Slot towards Calling Subscriber"
3. Send resource_allocate_ack to v5_call1
4. Receive resource_free from v5_call1
5. Free resource "E1 Slot towards Calling Subscriber"

Ts_mgr1 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Tone_mgr1 Interfaces

1. Receive interface (switch, dial_tone) from v5_call1
2. Begin action "Feed Dial tone"
3. Receive interface (unswitch, dial_tone) from v5_call1
4. End action "Feed Dial tone"
5. Receive interface (switch, silence_tone) from v5_call1
6. Receive interface (switch, routing_tone) from v5_call1
7. Begin action "Feed Routing tone"
8. Receive interface (unswitch, routing_tone) from v5_call1
9. End action "Feed Routing tone"
10. Receive interface (switch, ring_back_tone) from v5_call1
11. Begin action "Feed Ring back tone"
12. Receive interface (unswitch, ring_back_tone) from v5_call1
13. End action "Feed Ring back tone"
14. Receive interface (switch, congestion_tone) from v5_call1
15. Begin action "Feed Congestion tone"
16. Receive interface (unswitch, congestion_tone) from v5_call1
17. End action "Feed Congestion tone"

Rout_mgr Interfaces

1. Receive interface (routing) from ss_mgr

Ss_mgr Interfaces

1. Receive resource_allocate from v5_call1
2. Send interface (routing) to rout_mgr
3. Allocate resource "Path"
4. Send resource_allocate_ack to v5_call1
5. Receive interface (switch) from v5_call1
6. Send interface (switch) to ts_mgr1
7. Send interface (switch) to ts_mgr2
8. Begin action "Switch Path"
9. Receive resource_free from v5_call1
10. Receive interface (unswitch) from v5_call1
11. Send interface (unswitch) to ts_mgr1
12. Send interface (unswitch) to ts_mgr2
13. End action "Switch Path"
14. Free resource "Path"
15. Send resource_free_ack to v5_call1

Ts_mgr2 Interfaces

1. Receive interface (switch) from ss_mgr
2. Receive interface (unswitch) from ss_mgr

Isup_call2 Interfaces

1. Task isup_call2 is created by isup_mgr2
2. Receive call_request from isup_mgr2
3. Send call_request_ack to v5_call1
4. Send iam to env_r
5. Start timer tacm
6. Receive crg from env_r
7. Send crg to v5_call1
8. Receive rel from env_r
9. Send rlc to env_r
10. Stop timer tacm
11. Send call_release to v5_call1
12. Receive call_release from v5_call1
13. Send call_release_ack to v5_call1
14. Send call_over to isup_mgr2
15. Task isup_call2 is deleted by isup_mgr2

Isup_mgr2 Interfaces

1. Receive call_request from v5_call1
2. Allocate resource "Outgoing Trunk"
3. Create task isup_call2
4. Send call_request to isup_call2
5. Receive call_over from isup_call2
6. Delete task isup_call2
7. Free resource "Outgoing Trunk"