本规范描述了在IP语音（VoIP）IPCablecom网络中播放公告所需的体系结构和协议，发布本规范的目的是促进设计和现场测试，从而使多家供应商能够制造和互操作符合要求的硬件和软件。该规范将被称为IPCablecom音频服务器规范。 未完成的通话通常需要通知。此外，它们还可用于向呼叫者提供增强的信息服务（例如，电话卡、N11服务）。不同的运营商服务功能集需要不同的公告集和公告格式。 公告可以与固定内容公告一样基本（例如，所有电路繁忙），也可以与智能IVR（交互式语音响应）系统提供的公告一样复杂。IPCablecom服务模型要求以标准方式为所有受支持的通话功能和用例场景提供所有公告并发出信号。 本规范定义了一组用于在有线网络内提供公告服务的信令协议。对于其中一个协议，本规范定义了两个新的事件包: •基本音频包•高级音频包

This specification describes the architecture and protocols that are required for playing announcements in voice-over-IP (VoIP) IPCablecom networks, and is issued to facilitate design and field-testing leading to the manufacture and interoperability of conforming hardware and software by multiple vendors. The will be referred to as the IPCablecom Audio Server Specification. Announcements are typically needed for calls that do not complete. Additionally, they may be used to provide enhanced information services to the caller (e.g., calling card, N11 services). 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 signaled in a standard manner for all supported call features and use case scenarios. This specification defines a set of signaling protocols that are used to provide announcement services within a cable network. For one of these protocols, this specification defines two new event packages: • A Base Audio Package• An Advanced Audio Package