Callmanager cannot register more phones

peternnaji · ‎11-20-2008

I am using a callmanager 4.1. I know that this CMM does not use device licenses. I used to have about 40 Ip Phones registered on the Callmanager. At a time, some of the phones started configuring IP "CONTINUOSLY" for days and when I try to add new phones, they dont register on the CMM. What are possible remedies for this. Please help.

allan.thomas · ‎11-20-2008

There could be numberous reason why IP Phones fail to register. DHCP being one of them.

Take a look at this troubleshooting document it details various aspects to investigate:-

http://www.cisco.com/en/US/products/hw/phones/ps379/products_tech_note09186a008009485a.shtml

Hope this helps

Allan.

Pls rate helpful posts.

Rob Huffman · ‎11-20-2008

Hi Peter,

Just to add a personal touch to the great tips from Allan (+5 points here Allan)

We just had a problem with our off-box DHCP Server and these are the exact symptoms we experienced.

Cheers!

Rob