Devices fail to register

[mmcgille]

I am having an issue at a client where every couple of days, phones are unable to register with CM. They are fine as long as they don't get reset/restarted... but if I do reset them, they are stuck with "registering" on the screen and never are able to register.

I have solved the problem the last couple times by stopping and starting ccm.exe on the offending server (it has happened on both my subscribers at different times).

Obviously this isn't the best solution. Any ideas as to what might be causing the issue?

Thanks,

Matt

[marinaibm]

Do you see TFTP Timeout message as well?

[mmcgille]

Hi,

No TFTP timeout at all - sniffer capture shows that it contacts TFTP fine, then subscriber fine. All of a sudden, the phone sends an "unregister" request to the subscriber. Then the registration process starts all over again.

I found that after about 1.25 hrs of waiting and watching, the phone finally registered.

[marinaibm]

Do you have this problem in a remote branch or on the same switch the callmanager is connected to?

I believe its a routing issue

[mmcgille]

It happens with all phones regardless of location. One of the phones is plugged into the same switch (on the same VLAN as well) as the call manager.

[mallen]

Is the TFTP service only running on one ccm server? We've seen this behavior when multiple TFTP services are running.

[d-case]

Hi,

Had this problem on 3.2.2c SPF. Went to SP G and the problem has not recurred.