一种基于VoIP的CDMA卫星专网与PSTN互联系统设计

Design of a VoIP Gateway for Interconnection of a CDMA Satellite System and PSTN

传统的CDMA网络多采用专门的语音通信协议,无法直接与地面电话系统PSTN实现互联互通。针对这一问题,设计一种基于VoIP的互联网关系统,并进行系统功能测试。测试结果表明,基于VoIP的互联网关系统可实现CDMA卫星专网与PSTN之间的语音互通,极大地方便了卫星通信网的落地和网络扩展。互联网关系统可用于军事通信、应急和救灾等领域。

Conventional CDMA satellite communication systems usually adopt specified voice protocols, so the direct interconnection of a CDMA satellite system and PSTN can not be realized. To solve this problem, an interconnection gateway based on VoIP is developed. Test results show that the voice communication between CDMA satellite systems and PSTN can be realized by using this gateway. The designed gateway can provide great convenience for satellite systems to connect with the terrestrial communication systems and extend the network. The gateway can be applied in military communication and emergency communication.