RFC 3398 ISUP to SIP Mapping December 2002 5.7 Privacy Protection...................................... 9 5.8 CANCEL causes........................................... 10 6. Mapping................................................. 10 7. SIP to ISUP Mapping..................................... 11 7.1 SIP to ISUP Call flows.................................. 11 7.1.1 En-bloc Call Setup (no auto-answer)..................... 11 7.1.2 Auto-answer call setup.................................. 12 7.1.3 ISUP T7 Expires......................................... 13 7.1.4 SIP Timeout............................................. 14 7.1.5 ISUP Setup Failure...................................... 15 7.1.6 Cause Present in ACM Message............................ 16 7.1.7 Call Canceled by SIP.................................... 17 7.2 State Machine........................................... 18 7.2.1 INVITE received......................................... 19 7.2.1.1 INVITE to IAM procedures................................ 19 7.2.2 ISUP T7 expires......................................... 23 7.2.3 CANCEL or BYE received.................................. 23 7.2.4 REL received............................................ 24 7.2.4.1 ISDN Cause Code to Status Code Mapping.................. 24 7.2.5 Early ACM received...................................... 27 7.2.6 ACM received............................................ 27 7.2.7 CON or ANM Received..................................... 28 7.2.8 Timer T9 Expires........................................ 29 7.2.9 CPG Received............................................ 29 7.3 ACK received............................................ 30 8. ISUP to SIP Mapping..................................... 30 8.1 ISUP to SIP Call Flows.................................. 30 8.1.1 En-bloc call setup (non auto-answer).................... 31 8.1.2 Auto-answer call setup.................................. 32 8.1.3 SIP Timeout............................................. 33 8.1.4 ISUP T9 Expires......................................... 34 8.1.5 SIP Error Response...................................... 35 8.1.6 SIP Redirection......................................... 36 8.1.7 Call Canceled by ISUP................................... 37 8.2 State Machine........................................... 39 8.2.1 Initial Address Message received........................ 39 8.2.1.1 IAM to INVITE procedures................................ 40 8.2.2 100 received............................................ 41 8.2.3 18x received............................................ 41 8.2.4 2xx received............................................ 43 8.2.5 3xx Received............................................ 44 8.2.6 4xx-6xx Received........................................ 44 8.2.6.1 SIP Status Code to ISDN Cause Code Mapping.............. 45 8.2.7 REL Received............................................ 47 8.2.8 ISUP T11 Expires........................................ 47 9. Suspend/Resume and Hold................................. 48 9.1 SUS and RES............................................. 48 9.2 Hold (re-INVITE)........................................ 50 Camarillo, et. al. Standards Track