remote dial using SIP client
I want to remote dial from my pc using a simple non SIP client program which I wrote and wchich sends commands to a proprietary SIP client that accepts remote commands via a TCP connection. The proprietary SIP client will then dial the remote party using my PC's IP and port number in SDP for RTP. Is this possible in principle? Are there any opensource clients available that use this concept? Is there any documentation (IETF RFCs, blogs etc) that is available.

Appreciate any help in this matter. 
remote dial using SIP client
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I want to remote dial from my pc using a simple non SIP client program which I wrote and wchich sends commands to a proprietary SIP client that accepts remote commands via a TCP connection. The proprietary SIP client will then dial the remote party using my PC's IP and port number in SDP for RTP. Is this possible in principle? Are there any opensource clients available that use this concept? Is there any documentation (IETF RFCs, blogs etc) that is available.

Appreciate any help in this matter. 