ETSI TS 101 909-19-2-2002 数字宽带电缆接入公共通信网络.IP多媒体关键时间服务.第19部分:个人间电缆通信音频服务协议规范.第2子部分:媒体网关控制协议(MGCP)选择权
Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 19: IPCablecom Audio Server Protocol Specification; Sub-Part 2: MGCP Option
The present document describes the architecture and protocols that are required for playing announcements in voice over IP (VoIP) IPCablecom networks as an internal component of the IPCablecom system Announcements are typically needed for calls that do not complete. Additionally, they may be used to provide enhanced information services to the caller. Different carrier service feature sets require different announcement sets and announcement formats.
Announcements can be as basic as fixed-content announcements (e.g, all circuits busy) or as complex as those provided by intelligent IVR (Interactive Voice Response) systems. The IPCablecom service model requires that all announcements be provisioned and signalled in a standard manner for all supported call features and use case scenarios.
The present document identifies a set of signaling protocols that are used to provide announcement services within a cable network. For one of these protocols, the IPCablecom Network Call Signaling (NCS) protocol, the present document defines two new event packages:
? A Base Audio Package.
? An Advanced Audio Package.