CUCM 7.x, auto registration not assign the correct auto extensions

[Horacio Gutierrez]

Hello,

I have a site that that when I plug an IP phone I get an extension in the range of 2400 instead 4100 range. Any IP phone I plug in any site should be in the 4100 range don't know why only this site auto registers phones in the 2400 range.  Also one phone register with an extension of 2428 but did not show up in call manager. Any suggestions why this is happening. 

Thanks.

Horacio

[Rick Arps]

Hi Horacio,

If you have a phone that's registered, but not in your callmanager, my first step would be to see where it is registered to.  Check on the phone to see what the tftp server is.  It honestly sounds like you've got the dhcp scope at that building poined at a different CUCM cluster.

hth

Rick