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1·Channel management domain of the main bearer channels, including the building, channel management, channel management operations of the three major functions.

渠道管理功能域主要承载包括渠道建设、渠道管理、渠道运营三大方面的管理功能。

2·A bearer channel connection protocol establishes and de-establishes bearer connections required on demand, identified by the signalling information, under the control of the Local Exchange.

承载通路连接协议在本地交换机的控制下根据需要来建立和清除承载连接，该连接由信令信息来标识。

3·This bearer service flexibly supports connection-oriented communications at any bit rate over a virtual channel connection.

这种承载业务能够灵活地支持在一个虚信道连接上的任意比特率的面向连接的通信。