TAILIEUCHUNG - Signaling System No.7 Protocol Architecture And Sevices part 66

Appendix B. ISUP Messages (ANSI/UK/ETSI/ITU-T) The table in this appendix summarizes ISDN User Part (ISUP) messages and the purpose of each. For an introduction to ISUP, refer to Chapter 8, "ISDN User Part (ISUP) | Appendix B. ISUP Messages ANSI UK ETSI ITU-T The table in this appendix summarizes ISDN User Part ISUP messages and the purpose of each. For an introduction to ISUP refer to Chapter 8 ISDN User Part ISUP . Table B-1. ISUP Messages Message Code Full Message Name Purpose ACM 0 0 0 0 0 1 1 0 Address Complete Sent in the backward direction indicating that all address signals have been received and that the call set-up is progressing. ANM 0 0 0 0 1 0 0 1 Answer Sent in the backward direction to indicate that the called party has answered the call. May be used to trigger billing and measurements of call duration. APM NI99 I 0 1 0 0 0 0 0 1 Application Transport Sent in either direction to convey application information using the Application Transport Mechanism. BLO 0 0 0 1 0 0 1 1 Blocking Sent to the exchange at the far end to block call originations for the specified circuit. BLA 0 0 0 1 0 1 0 1 Blocking Acknowledgement Sent in response to a BLO message indicating that the identified circuit has been blocked to outgoing traffic. CPG 0 0 1 0 1 1 0 0 Call Progress Sent in either direction indicating that an event has occurred in the progress of a call. CGB 0 0 0 1 1 0 0 0 Circuit Group Blocking Sent to the exchange at the far end to block call originations for a specified group of contiguous circuits. CGBA 0 0 0 1 1 0 1 0 Circuit Group Blocking Acknowledgement Sent in response to a CGB indicating that the identified group of circuits has been blocked to outgoing traffic. CQM N NS67 0 0 1 0 1 0 1 0 Circuit Group Query Circuit Query Message ANSI Sent on a routine or demand basis to request the exchange at the other end of a group of circuits for the state of the circuits within the specified range. CQR N NS67 0 0 1 0 1 0 1 1 Circuit Group Query Response Circuit Query Response Message ANSI Sent in response to a CQM indicating the state of the previously identified group of circuits. GRS 0 0 0 1 0 1 1 1 Circuit Group Reset Sent to align the state of a group of circuits with

• Kỹ thuật lập trình
• thủ thuật lập trình
• ngôn ngữ lập trình
• tài liệu lập trình
• hướng dẫn lập trình
• kĩ năng lập trình
• mẹo lập trình
• kỹ thuật lập trình
• kỹ năng lập trình
• bí quyết lập trình
• phương pháp lập trình
• tư liệu lập trình
• kĩ thuật lập trình
• AutoIT