[cisco-voip] 7970s will not register

[Wesley Sisk]

Hi Pete,

That defect is only applicable if phones are powered up but lack IP 
connectivity to CM for an extended period of time.  The workaround is to 
power the phone down/up.

If that didn't do it you're in another state. Possibilities:
1. network issue - are the phones getting DHCP option 150 or DNS 
resolution for CiscoCM1 to find their TFTP server?  Do the phones get 
valid IP's, subnet mask, defeault gateway?  Can you ping the phones from 
the CM server.  Is there any firewall or ACL that would block IP 
connectivity?  On the CM server if your run 'netstat -an | findstr 2000' 
do you see the IP of the phones in the output?  If not, your phones are 
attempting to contact CM and the problem is closer to the phones.

2. dead phones - have these phones every registered successfully?  Are 
they running SIP loads?  Do the icons and graphics on the LCD's look 
differnt from any of your other phones?  Can you point your web brower to 
the IP of the phone?  Are there any 'interesting' messages in the status 
logs from the phone web page?

There are many components between 'phone' and 'cm' that may inhibit 
registration.  We need a bit more info on what is working to figure out 
what is not working.

/Wes

On Wed, 24 Oct 2007, Ruttman, Pete G. wrote:

> We have a couple 7970 phones that will not register with callmanager.  A
> previous engineer told me that the there was a bug that caused the phone
> to not register if they were not connected to callmanager for an
> extended period.  We have had the phones offline now for years and I
> just tried to plug them in and they will not register.  I tried to reset
> the phone to factory based on the directions below:
>
> Unplug the power cable from the phone and then plug it back in. The
> phone begins its power up cycle.
> While the phone powers up, and before the Speaker button flashes on and
> off, press #. Each line button flashes on and off in sequence.
> Press 123456789*0#. You can press a key twice in a row, but if you press
> the keys out of sequence, the factory reset does not take place. Now the
> lights should change color from amber to red.
> Press 1 in order to maintain the current network configuration settings
> for the phone when the phone resets.
>
> Does anyone have any other suggestions to fix these?
>
> Pete
>
>
>
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