Telecom Call Flows (GSM, ISUP, VoIP)

 
 http://www.eventhelix.com/RealtimeMantra/Telecom/에 Mobile Platform Call Flows에 대한 요약자료가 있어 공유한다.  시스템  서버 설계 Designer 프로그램인  EventStudio로 그린 Call Flow들이고 이해하기가 쉽게 되어 있다.

* GSM Circuit Switched Call Flows
  - GSM Network Example
  - GSM Mobile Originated Call Flow
  - GSM Location Update Sequence Diagram
  - GSM Mobile Terminated Call Flow
  - GSM RR Call Flows
  - GSM RR Collaboration Diagram 
  - GSM MM Call Flows
  - GSM MM Collaboration Diagram 

* GSM Handover Call Flows
  - GSM Handover Call Flow (Intra MSC)
  - GSM Inter-MSC Handover Call Flow
  - GSM Handover MSC Level Call Flow
  - GSM Handover MSC Level Collaboration Diagram
  - GSM Handover BSC Level Call Flow
  - GSM Handover BSC Level Collaboration Diagram
  - GSM Handover Mobile Level Call Flow
  - GSM Handover Mobile Level Collaboration Diagram

* GSM GPRS Sequence Diagrams
  - GPRS Combined Attach and PDP Context Activation
  - New SGSN Interfaces Attach and Activation
  - User Terminal Interfaces in Attach and PDP Activation

* SIP and H.323 Call Flow Diagrams
  - SIP to PSTN Call Flow
  - SIP to ISDN PBX Call Flow
  - H.323 Call Flow
  - H.323 Context Diagram

* ISDN User Part (ISUP) Call Flows
  - SS7 ISUP to ISUP Call (Called Subscriber Clears First)
  - SS7 ISUP to ISUP Call (Calling Subscriber Clears First)
  - SS7 ISUP to ISUP Call (Failure Scenario)

* V5.2 Protocol Call Flows
  - V5.2 to V5.2 Call (DTMF, Called Subscriber Goes Onhook)
  - V5.2 to V5.2 Call (Pulse, Calling Subscriber Goes Onhook)

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