ISDN Q.921-User Adaptation Layer

V5.2-User Adaptation Layer (V5UA)

“…There is a need for Switched Circuit Network (SCN) signaling protocol delivery from a V5.2 Signaling Gateway (SG) to a Media Gateway Controller (MGC), analogous to the implementation of the ISDN Q.921 User Adaptation Layer (IUA) as described in [1].…”

Digital Private Network Signaling System (DPNSS)/Digital Access Signaling System 2 (DASS 2) Extensions to the IUA Protocol

“…This document describes a method of implementing Digital Private Network Signaling System 1 (DPNSS 1) [2] (henceforth referred to as just DPNSS) and Digital Access Signaling System 2 (DASS 2) [3] backhaul messaging over IP using a modified version of the ISDN User Adaptation Protocol (IUAP) [1]. The DPNSS/DASS 2 User Adaptation (DUA) builds on top of IUA by defining the necessary extensions to IUA for a DPNSS/DASS2 implementation.…”

Security Considerations for Signaling Transport (SIGTRAN) Protocols

“…These protocols will be used between o customer premise and service provider equipment in case of ISDN Q.921 User Adaptation Layer (IUA) [9].…”