Third-party SIP & CME

Unanswered Question
Feb 24th, 2010
User Badges:


I have to register an IVR as a SIP endpoint on CME and assign it 30 DN's. Is it possible to register third-party SIP endpoint on CME? How many DN's can assign to one SIP endpoint on CME?


  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 5 (1 ratings)
paolo bevilacqua Wed, 02/24/2010 - 11:52
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    Founding Member

Yes, it is possible. If you can summarize the numbers in a pattern, there is no limit to the DNs.

daniel.espi Wed, 02/24/2010 - 11:56
User Badges:


If i can't summarize DN's in a pattern, what will be the limit?


William Bell Wed, 02/24/2010 - 13:03
User Badges:
  • Purple, 4500 points or more


You can add 3rd party SIP phones to CME.  I had to do this recently and I did a write up on it here:

The max number of DNs you can assign is more a function of the 3rd party device/software and the license you have.  I am primarily testing soft phones.  With X-Lite, you can only have a single line with the "free" version but can have multiple lines with the "pro" version.

I am not sure what limits CME imposes on the maximum number of lines you can assign to a SIP device.  Based on this doc:

You can define up to 10 "number" tags for each SIP register pool.  Which I believe correlates to a a max of 10 DNs for a SIP device.  The maximum DNs available on the system is controlled by the "max-dn" command under the "voice register global" configuration stanza.



Please remember to rate helpful posts.


This Discussion