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SIP to PSTN termination.

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Join Date: Aug 2007
Posts: 13
I am looking for a US provider that can terminate/trunk sip calls to PSTN.
Here is a rough flow chart to hopefully make what I am after make sense.
Customer dials a DID which we have purchased through a 3rd party provider.
The provider terminates the PSTN call to a SIP server in LA.
Our SIP server does some a look ups and places an out going call via PSTN to anywhere in the world.
We need a carrier to trunk our SIP to the PSTN.
If anyone knows of something/someone that can provide this please let me know.

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Web Hosting Master
Join Date: Feb 2003
Location: Canada
Posts: 951
Does the provider you have DID origination from not provide termination service as well?
Usually this type of service is hand in hand. Would it be easier to keep everything with one company?
I use for origination+termination. Service has been good.

Join Date: Aug 2007
Posts: 13
The DID provider we use does PSTN to SIP termination but not the other way around.
I am not sure of the business logic for this but that part works well and has API implementation into ours software so I won't be changing.

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Junior Guru Wannabe
Join Date: Aug 2004
Posts: 34
Do you have a rough volume?
Try to contact steve @ idv .net
He have done alot of special sip as well as pstn trunking for us.

Join Date: Aug 2007
Posts: 13
Thanks for info.
I have emailed IDV as it looks like exactly what we want.


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