Appendix - Isdn Signaling Gateway Functionality; Iua (Isdn User Adaptation); Iua Signaling Messages; Configuring Sigtran Iua - Nortel Media Gateway 3200 User Manual

H.248 User's Manual
18 Appendix - ISDN Signaling Gateway
Functionality
The Media Gateway 3200 supports the relay of ISDN signaling messages using SIGTRAN
IUA and SCTP protocols (refer to Figure 18-1).
18.1

IUA (ISDN User Adaptation)

A signaling message entering the device from the ISDN connection goes through the Data
Link Layer. The Q.931 PDU is then relayed to the Media Gateway Controller using IUA
over SCTP over IP. The Media Gateway Controller (MGC) supports SCTP and IUA layers
and then completes the upper signaling layers of Figure 18-1.

18.1.1 IUA Signaling Messages

Media Gateway 3200
Signaling Gateway
DL
PHY

18.1.2 Configuring SIGTRAN IUA

Use ini file parameter values to configure an IUA connection.
Version SN09

18. Appendix - ISDN Signaling Gateway Functionality

Figure 18-1: ISDN Signaling Messages

IUA
SCTP
IP
Ethernet Phy
331
Media Gateway
Controller
SIGTRAN
Forum
Specification
IP Cloud
Call Control
Q.931
IUA
SCTP
IP
Ethernet Phy
October 2006