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Beginner

Cisco ipphone 6921 release automatically IP address

hi all,

I have a strange problem on the cisco ipphones.

The ipphones have already an ip address and registred on the CUCM. but they releases there ip address randomly and frequently !!!

After a while , the ipphones get anther ip address and register again.

Firstly i thought that may be the problem is the Firmware version used by the ipphones --> I tried many version but the problem stil exist.

 

The CUCM version is : 8.0.3

The LAN is a third party switchs ( hp).

 

Would you mind to help ?

 

thanks in advance

 

Regards

 

CHAM

 

 
1 REPLY 1
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Rising star

Is the phone grabbing an ip address from the same subnet everytime?

 

You can try setting the lease time to infinite.

 

See link below.

https://supportforums.cisco.com/discussion/12218921/cisco-ip-phone-6921-keep-displaying-ip-address-released

 

Hope this helps.

Please rate helpful posts.

Thanks.