access gateway control function

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access gateway control function
接入网关控制功能
[We] hereafter highlight the scenario for an access gateway device AGW1 connected to an Access Gateway Control Function AGCF. The HSS/UPSF keeps information about the group device AGW1 as a dedicated virtual IMS user, as well as all the associated permanently registered users User1 till User100 coupled to AGW1. When the AGW1 initializes it sends (1) a service change request, e.g. a H.248 Service change, to the AGCF indication that all terminals associated with user1 till user100 are available. The AGCF then initiates a SIP registration on behalf of the group device AGW1 and sends (2a) a registration request to the I-CSCF indicating the IMS Private user Identity IMPI and the IMS Public user Identity IMPU associated with AGW1.
[...] 接入网关控制功能实体将移动交换中心/拜访位置寄存器转发的电路域信令消息映射为会话发起协议的信令消息,并将该会话发起协议的信令消息发送到IP多媒体子系统域中的会话控制功能实体 [...] 。
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