Nope, route patterns are to point to trunks or gateways. For SIP you just register the phone like a normal one; but since SIP uses authentication, a End User is needed to be configured and assigned. Try using the X-Lite softphones to validate your pa...

Hmmm it could be the codec. In MTP Preferred Originating  Codec; I've got 711 ulaw. Maybe assigning a hardware transcoding resource will do the trick? When I stablish a call on my Desire, the call says "G.722 HD".

Have you checked the Media Termination Point Required box in the SIP Phone registered in the CUCM? try checking it for both phones, restart them, maybe restarting the Droid would help. Could be a codec problem; when I make a call I see it coming out ...

I did it this way:I added an user with the number of the phone to use (i.e. 682). To simplify, the password and pin was 682 too. I also added this user to the Standard CCM End Users and Standard CTI groups. Very important: the digest credentials have...