Asterisk as a Public Switched Telephone Network Gateway for an IMS test bed

Alton MacDonald, R. Cartas, J. Incera
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Abstract

Network operators are in the process of adopting the IP Multimedia Subsystem (IMS) as their main underlying infrastructure which will in turn be used as a Service Delivery Platform (SDP). This process requires the migration of current services to their IMS counterparts, as well as a compatibility layer enabling successfull communication between IMS and other network infrastructures. Any and all functionality within IMS is normally available through an Application Server (AS). This paper presents an implementation of a Public Switched Telephone Network (PSTN) Gateway which is able to successfully interface with an IMS test bed. Consequently, it also allows calls to be placed between IMS and other Voice over IP (VoIP) providers. The gateway is enabled as an AS with the help of Asterisk.
Asterisk作为IMS测试平台的公共交换电话网络网关
网络运营商正在采用IP多媒体子系统(IMS)作为其主要的底层基础设施,而这些基础设施又将被用作服务交付平台(SDP)。此过程需要将当前服务迁移到其IMS对应服务,并需要一个兼容层,以便在IMS和其他网络基础设施之间成功通信。IMS中的任何和所有功能通常都可以通过应用服务器(Application Server, AS)获得。本文介绍了一种公共交换电话网(PSTN)网关的实现,该网关能够成功地与IMS试验台接口。因此,它还允许在IMS和其他IP语音(VoIP)提供商之间进行呼叫。通过Asterisk软件启用网关作为应用服务器。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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