PSTN-Public Switched Telephone Network 公共交换电话网络 ; 电话网
PSTN Public Telephone Switched Network 公共交换电话网
PSTN Public Switched Telephone Network 公共交换电话网 ; 公众交换电话网 ; 公共开关电话网络
PSTN Public Switching Telecommunication Network 公共交换电信网
pstn intelligent network 固定智能网
PSTN Public Switched Telecommunications Network 公共电信交换网
public switched telephone network pstn 公共交换电话网
public switching telephone network pstn 公共交换电话网
PSTN Public Switch Telephone Network 公用电话交换网络
Media gateway is used to encode and decode voice steam and connect PSTN network to the IP network.
利用媒体网关进行语音流的编解码，确保PSTN网和IP网络间的互通性；
The system is applicable in the testing of PSTN Network and the communication among all kinds of networks.
该系统适用于PSTN网的测试以及各种网络互通的测试。
NGN could provide more abundant operations than PSTN network, and could also realize amalgamation of many networks.
NGN能比原有的PSTN网络提供更加丰富的业务能力，并且能够实现多网的融合。
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