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Telecom Message Sequence Charts

GSM Message Sequence Chart (MSC)	High level view of the GSM MSC. Only module level interactions are shown.	GSM call flow collaboration diagram

Message Sequence Charts (MSCs) The call sequences for GSM are shown here.	GSM Call Flow GSM Call Flow (MS Word)
Interaction Message Sequence Charts Change the level of detail in the call flow. Just show inter-module or inter-processor messages.	Processor Level GSM Call Flow Module Level GSM Call Flow
Interface Message Sequence Charts These diagrams just focus on the message interfaces of one entity. All other interfaces are filtered out.	NSS Interface Sequence Diagram
Message Filter Sequence Diagram Diagram that contains only messages that match a regular expression. e.g. Messages that begin with the text "RR".	GSM RR Interactions MSC
Collaboration/Context Diagrams In these diagrams focus is more on interactions and less on the time sequence of the call flow.	GSM Collaboration Diagram
Message Filter Collaboration Diagram Diagram that contains only messages that match a regular expression. e.g. Only include message that end with "Request".	GSM RR Interactions Collaboration Diagram
Summary Document Call flows are summarized entity wise. The role of each entity is clearly mentioned.	GSM Call Setup (Entity Wise Summary)