Cisco 7940 and using Trixbox(Asterisk)

Unanswered Question
Mar 7th, 2010
User Badges:

I have setup my sip trunk and now would like to setup my Cisco 7940 ip phone using SIP and trixbox. I have reset the phone according to the instuctions from Cisco and it goes through the boot process and gets and IP address. On the screen it says ,"Protocol Application Invalid" I assume because it using the SCCP protocol and is using Cisco Call Manager for its configs. I have tried to unlock the phone using **# and I cannot get past this screen and I cannot get to the phone via the web browser as well. Can anyone point me in the right direction. thanks Also if anyone can give me the SIP firmware instrucions for this phone.

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
paolo bevilacqua Sun, 03/07/2010 - 09:20
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

You will find better advice on sites like


This Discussion