Phone DNS Settings

Answered Question
May 1st, 2007

Can anyone tell me where the 7960/7940 ip phone gets its DNS information from. In the Networkin Configuration of the phone I have a IP address for DNS Server 1. This IP address is incorrect and needs to be changed.

I have tried using "Unlocked Mode" in Net Config. I see the Edit button, but it is 'greyed out'. Plus, I am hoping to not have to touch all 500 phones to change this setting. I am hoping there is a global setting for this, but I have spent the past hour searching CCMAdmin without any luck.

Any help is greatly appreciated.

I have this problem too.
0 votes
Correct Answer by Brandon Buffin about 6 years 11 months ago

It gets this value eiither from DHCP or from manual configuration. With this number of phones, it's very likely that you're using DHCP. Check the DHCP options for DNS.

Hope this helps. If so, please rate the post.

Brandon

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Correct Answer
Brandon Buffin Tue, 05/01/2007 - 12:34

It gets this value eiither from DHCP or from manual configuration. With this number of phones, it's very likely that you're using DHCP. Check the DHCP options for DNS.

Hope this helps. If so, please rate the post.

Brandon

zebranutz80 Tue, 05/01/2007 - 12:48

Sure enough...the Voice VLAN DHCP scope had the wrong settings. thanks

Rob Huffman Tue, 05/01/2007 - 12:53

Hi Thomas,

Just wanted to send you this excellent doc that does go through the startup process etc;

Cisco Unified IP Phone Model 7960G and 7940G Administration Guide for Cisco Unified CallManager

Troubleshooting the Cisco Unified IP Phone

From this good doc;

http://www.cisco.com/en/US/products/hw/phones/ps379/products_administration_guide_chapter09186a008070ddcd.html

Take care,

Rob

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Posted May 1, 2007 at 12:28 PM
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