所有的信号和语音通信交换机之间的交换和提供者是通过IP使用SIP和RTP协议包网络。
All signaling and voice traffic between the PBX and the provider is exchanged using SIP and RTP protocol packets over the IP network.
所有的信号和语音通信交换机之间的交换和提供者是通过IP使用SIP和RTP协议包网络。
All signaling and voice traffic between the PBX and the provider is exchanged using SIP and RTP protocol packets over the IP network.
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