Interworking between the ISDN User - Network Interface Protocol and the Session Initiation Protocol (SIP) with ANSI Extensions to the Narrowband Signaling Syntax (NSS)
ISDN用户网络接口协议和会话启动协议(SIP)之间的互通 带有窄带信令语法(NSS)的ANSI扩展
This standard defines the interworking relationship between the D-channel layer-3 functions and protocol employed across an ISDN User- Network Interface and an interface using the Session Initiation Protocol (SIP) augmented by the Narrowband Signaling Syntax (NSS) with ANSI Extensions.