network protocols handbook.pdf

306Protocols GuideSS7 / C7 ProtocolProtocol NameBISUP: Broadband ISDN UserPartProtocol DescriptionBroadband ISDN User Part (BISUP) is a protocol intended tosupport services such as high-definition television (HDTV), multilingualTV, voice and image storage and retrieval, video conferencing,high-speed LANs and multimedia. Since BISDN is notdeployed widely so far, so is not the BISUP.BISUP is defined by ITU-T Q.2762 and Q.2763.Referencehttp://www.itu.int/rec/recommendation.asp?type=folders&lang=e&parent=T-REC-Q.2762General Functions of messages and signals of theB-ISUP of Signalling System No. 7Protocol StructureThe structure of the B-ISUP protocol is as follows:Octets 1 2 3 41 M e s -s a g eTypeLengthIndicatorTransit at intermed exch.ind2 Release call ind3 Send notification ind4 Discard message ind5 Pass on not possible ind6 Broadband/narrow-band interworkingind78 Ext.• Message Type - The different message types.The following message types are available:• Message Length - The message length in octets.• Broadband/narrow-band Iinterworking Indicatorfor passing on, discard mesage, release call, etc.• Pass on not Possible Indicator for release calland discard information• Discard Message Indicator for dicard or do notdiscard message• Send Notification Indicator for sending or do nosending notification• Release call indicator for release or do not releasecall• Transit at intermed exchance Indicator for transitinterpretation or end node interpretationRelated protocolsSS7, ASP, BICC, DAP, ISUP, MTP, SCCP, TCAP,TUP, MAPSponsor Source