Implementing SIP Connection for Enhanced PBX Call Management

I'm not sure if this is in the pipeline or not, but talking about SIP on one of the past calls got me to thinking about some things. We run our own PBX and want to be the primary inbound connection for phone calls. We have an IVR, etc and want to control things. I'd love to be able to do a SIP based connection to an agent to bring it into the mix on my PBX. Here's an example and reason: Caller1 calls in, hits option 2 for Quote. We would do a ring all out to all of our techs to see if someone is available. If no one answers, we would want the PBX to do a SIP call to the Thoughtly agent. Why a SIP call? We don't have to pay for outbound minutes, it's a simple TCP connection. Otherwise, we have to use a SIP trunk connection to dial a number associated with the agent to trigger the conversation. Another upside to the SIP call, we can do call recordings and transcriptions directly in our PBX vs relying on Thoughtly.