Any opinions (good or bad) on sip trunking for Avaya IP office configured Partner. Thanks

Can be tricky. We've used Broadvox. They are now part of NBS. M

Hizer, is it worth the aggravation.

Depends, will you make recuring money on the sip trunks and additional on the install. If so, thats what were in business for. If not then no way.

Clearfly Communications has integrated SIP Trunking with the IP Office and in the process of completing IOT with Avaya.

Its completely depend upon no of user in your business.