SigtranProtocolStack.pptVIP

IP Signaling protocol stack BICC (Bearer Independent Call Control) is a signaling protocol based on N-ISUP that is used to support narrowband ISDN service over a broadband backbone network without interfering with interfaces to the existing network and end-to-end services. GCP (Gateway Control Protocol) is used to enable the MSC Server to request bearer connections from the M-MGw. RANAP (Radio Access Network Application Part) provides services for PS and CS related signaling on the Iu interface. RNSAP (Radio Network System Application Part) provides signaling for Iur handover between RNCs. A;2 * Ericsson Confidential DESIGN SPECIFICATION 12 (210) Prepared (also subject responsible if other) No. MPBN Project 1/102 62-5/IPM 101 20/11 Uen Approved Checked Date Rev Reference EDD/XSB [Volker Rautenberg] 2010-11-23 A BSSAP (Base Station System Application Part) is a protocol on the A interface between MSC and BSC. MAP (Mobile Application Part) is a protocol for interrogating databases such as HLR and VLR. CAP (CAMEL Application Protocol) and INAP provide Intelligent Network (IN) Control signaling between gsmSSF (Service Switching Function, MSC or SGSN) and SCF (Service Control Function, SCP). ISUP (ISDN User Part) provides control functions and signaling for the call control layer. SCCP (Signaling Connection Control Protocol) allows end-to-end connection-oriented and connectionless signaling between applications in different nodes. SCCP offers additional addressing and routing functions for these purposes and hides the underlying MTP3 layer routing. TCAP (Transaction Capabilities Application Part) provides support for interactive applications, e.g. for communication between HLR-VLR. As can be seen from the above figure, SS7 over IP introduces three new protocols (apart from IP) in the middle layers of the signaling stack: SCTP, M3UA and M2PA. SCTP * *