This stopped working for me at some unknown, but recent point in time.
My inbound call route looks like this:
{(5oooooooo|6oooooooo|6oooooooo):aa},{ph1,sp2(18667326184@sip.tollfreeproxy.com;ui=$1)}
(note that I've blanked out my three OBi numbers with "oooooooo" for this post)
The OBi's call history shows:
Fork to:
PH1
SP2(18667326184@sip.tollfreeproxy.com;ui=1425nnnnnnn)
--------
Ringing (PH1)
I can't recall what it used to say when it actually worked, but I think this means that
sip.tollfreeproxy.com isn't completing the call.
Would somebody that is using this scheme please test it by logging into their Nomorobo web page, and having Nomorobo run their test call?
I would simply use SP2 to call the nomorobo number directly, but Callcentric apparently doesn't support spoofing the caller ID (the ui=$1 parameter).