Sip2Sip call to Auto Attendant

[eaglesvr]

Can't figure out how to forward incoming calls from a particular SP2(sip2sip) caller to AA. Trusted callers list assumes phone# which is not provided by these calls. Possible solution could be forwarding all incoming calls from SP2  to AA. But I don't like this option because of possible security issues.
Thanks

[QBZappy]

The inbound call route needs to be set up with the CID number you see coming from sip2sip from the call history like so:

SPx (of sip2sip)
X_InboundCallRoute = {(sip2sip_number):aa},{ph}