[Sip-implementors] Calling to PSTN

[Choi,JaeEun]

Hi, all.

There's many gateway to PSTN enabled SIP.

But I don't get it exactly how it works.

So, I need some explanation on calling to PSTN using UA.

 

When calling with telephone number, which head should include this telephone number?

And what should be done between Proxy Server and SIP gateway before attempting Calling to PSTN?

 

Please give me some explanation & let me know some documents about this issue if exist.

 

Thanks in advance.

 

 

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Choi, JaeEun

Engineer / R&D Lab

WebCall World Co., Ltd.
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