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.