Email This Page SS7 BISUP: Broadband ISDN User Part Broandband Integrated Services Digital Network (Broadband ISDN User Part (BISUP) is a protocol intended to support services such as high-definition television (HDTV), multilingual TV, voice and image storage and retrieval, video conferencing, high-speed LANs and multimedia. Since BISDN is not deployed widely so far, so is not the BISUP. Protocol Structure - SS7 BISUP: Broadband ISDN User Part The structure of the B-ISUP protocol is as follows: 8 7 6 5 4 3 2 1 Octets Message Type 1 Length Indicator 2 3 Ext. Broadband/narrow-band interworking ind Pass on not possible ind Discard message ind Send notification ind Release call ind Transit at intermed exch. ind 4 Message Type - The different message types. The following message types are available: Message Length - The message length in octets. Broadband/narrow-band Iinterworking Indicator for passing on, discard mesage, release call, etc. Pass on not Possible Indicator for release call and discard information Discard Message Indicator for dicard or do not discard message Send Notification Indicator for sending or do no sending notification Release call indicator for release or do not release call Transit at intermed exchance Indicator for transit interpretation or end node interpretation Related Protocols SS7, ASP, BICC, BISUP, ISUP, MTP, SCCP, TCAP, TUP, MAP Sponsor Source BISUP is defined by ITU-T Q.2762 and Q.2763. Reference http://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-Q.2762 : General Functions of messages and signals of the B-ISUP of Signalling System No. 7