[VoiceOps] Carriers that allow CNAM dips via SIP Subscribe?

[Victor Breen]

Hello VoIP Gurus!

I'm hoping one of you might be able to help narrow my search.  Has anyone had any experience, either good or bad, with any particular carriers in getting CNAM queries working using SIP Subscribes?  I have seen a few offer it via HTTP, but that won't work for my platform without developing a custom proxy to translate the SIP to HTTP and back again.

Any leads would be greatly appreciated, either on or off list.

Thanks!

-- 
 Victor Breen,  VoIP Systems Administrator
 Impulse Advanced Communications
 (805) 456-5800