识别拨出电话 [英] Identify outgoing call

问题描述

大家好，我正在尝试创建一个剥离"+"的应用程序托管代码。 lync客户端拨打的所有OUTGOING呼叫的符号，并被定向到PSTN网关（内部呼叫，例如lync到lync呼叫不被考虑）。

Hi all, I am trying to create an application managed code that will strip "+" symbol for all OUTGOING call made by lync client and are directed to PSTN gateway ( internal call, such as lync to lync calls are not taken into account ).

这里有一个很好的起点：  http：//blog.greenl.ee/2013/01/11/removing-sign-incoming-pstn-calls/ 

Here there is a good starting point : http://blog.greenl.ee/2013/01/11/removing-sign-incoming-pstn-calls/ 

我想找的是一个识别拨打PSTN网关的方式。 

What I am trying to find is a way to identify the outgoing call towards PSTN gateway. 

任何想法？

Refgards

推荐答案

我正在深入研究拨出呼叫的SIP跟踪，转向PSTN网关;我想有一些信息（在SIP邀请内）确定该呼叫不是lync到lync呼叫而是PSTN呼叫。我需要它继续我的想法。

I am digging into SIP trace of outgoing calls, towards PSTN gateway; i suppose there is some information ( inside sip INVITE ) that identify that call is not a lync to lync call but a PSTN call. I need it to procede with my idea.

想法？

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