This Recommendation is one of a set of Recommendations that describe the Broadband ISDN User Part.

本建议是一组描述宽带ISDN用户部分建议中的一个。

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This Recommendation describes the elements of signalling information used by the ISDN user part protocol and their function.

本建议叙述ISDN用户部分协议所用的信令信息要素和它们的功能。

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This Recommendation specifies the formats and codes of the ISDN user part messages and parameters required to support basic bearer services and supplementary services.

本建议规定ISDN用户部分支持基本的承载业务和补充业务要求的消息和参数的格式和编码。

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This Recommendation specifies the formats and codes of the ISDN user part messages and parameters required to support basic bearer services and supplementary services.

本建议规定ISDN用户部分支持基本的承载业务和补充业务要求的消息和参数的格式和编码。

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