RFC 3064 (rfc3064) - Page 2 of 56

MGCP CAS Packages

RFC 3064                   MGCP CAS Packages               February 2001


Table of Contents

   1.0.Introduction ................................................  3
   1.1. Functional Partitioning ....................................  3
   1.2. CAS Trunk Types ............................................  4
   1.2.1. "MS" Package .............................................  5
   1.2.2. "DT" Package .............................................  5
   1.2.3. "BL" Package .............................................  6
   1.2.4. "DO" Package .............................................  6
   1.2.5. "MD" Package .............................................  6
   1.2.6. "MO" Package .............................................  7
   2.0. Event Packages .............................................  7
   2.1. Events and Signals for the "MS" package ....................  9
   2.2. Events and Signals for the "DT" package .................... 10
   2.3. Events and Signals for the "BL" package (Basic PBX) ........ 10
   2.4. Events and Signals for the "DO" package .................... 11
   2.5. Events and Signals for the "MD" package .................... 12
   2.6. Events and Signals for the "MO" package .................... 13
   2.7. Event and Signal Descriptions .............................. 13
   3.0. Hook-State Signals and Events .............................. 23
   3.1. Overview of Approach ....................................... 23
   3.2. Suspend/Resume Processing .................................. 23
   3.3. Control over Disconnect for E911 ........................... 24
   3.3. Release and Release Complete ............................... 24
   3.4. Blocking CAS Trunks ........................................ 26
   3.5. Summary of Hook-State Events ............................... 26
   4.0. Glare Handling ............................................. 27
   4.1. Glare on MF Bi-directional Wink-start Trunks ............... 27
   4.2. Glare Handling - Basic PBX Trunks .......................... 27
   5.0. Example Call Flows ......................................... 28
   5.1. PBX to PBX ("MS", "DT, and "BL" packages)................... 28
   5.1.1. Call Setup Flows ......................................... 28
   5.1.2. Call Tear-Down ........................................... 34
   5.1.2.1. Origination End Initiates the Release .................. 35
   5.1.2.2. Termination End Initiates the Release .................. 38
   5.2. Example Call Flows - "DO" package .......................... 40
   5.2.1. Call Setup Flows ......................................... 40
   5.2.2. Call Tear-Down ........................................... 42
   5.3. Example Call Setup - "MD" Package .......................... 44
   5.4. Example Call Setup - "MO" Package .......................... 51
   Acknowledgements ................................................ 54
   References ...................................................... 55
   Author's Address ................................................ 55
   Full Copyright Statement ........................................ 56







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