SIP 3PCC Remote Call Initiation from

I need to initiate 2-party phone calls from (VS 2003). I have a SIP gateway provider to connect calls to PSTN.

I want some function / api that I can call that takes 2 qualified 10-digit U.S. phone numbers and initiates a call by ringing both numbers and establishing direct RTP connection through this known SIP gateway, so the SDP should be able to be assumed. This could be once both have answered, or once one has answered he will hear ring tone from other UA until answered.

CallerID must show my number (or none) to each party, not each other's.

Function must return a result code indicating if the connection was successful.

I'm also interested in an optional or future enhancement where each party must press a touch-tone to accept the call, potentially (but not required) following a brief recorded instruction. Please discuss this option as part of your bid, but not part of the initial project scope.

Skills: .NET, Asterisk PBX, C# Programming, Visual Basic

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About the Employer:
( 0 reviews ) Woodside, United States

Project ID: #529115

4 freelancers are bidding on average $475 for this job


Hi Good Morning. Pls see my PM. Br Suvankar

$600 USD in 30 days
(0 Reviews)

Hi, I am a web developer with hands of experience ,i can work for you and make this application a [url removed, login to view] see PMB. Thanks Jibin

$500 USD in 20 days
(0 Reviews)

I can provide client for application that will can call, recive calls, have hold call and other functionality.

$300 USD in 5 days
(0 Reviews)

Hi, pls check PM!

$500 USD in 10 days
(0 Reviews)