Cisco 7970 in SIP mode

Mar 24, 2009 at 8:15 PM
I have been trying to get a Cisco 7970 IP Phone working on callbutler to no avail, the config of the Cisco phone is ok and it is trying to register with the callbutler service, but call butler keeps responding to the REGISTER  with an un-authorised which is normal procedure given that the Cisco phone initially tries to register without authentication within the SIP message. but for some reason the cisco phone doesnt like the response and does try to re-register with authentication, but it does when i try the cisco phone on  asterixwin32 and work fine! Any help would be much appreciated.