Errors from Phones Not Registering

[paschooltech]

We have a few new models we added to CM. They do not want to register, but I can web access into them. All IP, DHCP, TFTP looks fine. However, they do all display the same error in the debug display logs on the phone:

System version: 12.5.1.12900-115 Unrestricted

Has anyone seen this before?

New models: 8811, 7832, 7821

System version: 12.5.1.12900-115 Unrestricted

The server is NOT in mixed-mode.

[George Sotiropoulos]

Hello,

Can you cross-check that you are assigning the correct phone-type per device?

Could you also post logs from the phones that do not register?

George

[Nithin Eluvathingal]

can you post the error in the debug display logs on the phone

[paschooltech]

Here is the message, and it appears over and over again. I have double and triple checked that it's the correct phone type as well.

[11:29:18am 01/16/20] DeviceTLInfo DeviceName=SEP70C9C668DA28 IPv4Address=192.168.50.8 IPv6Address=CTL_Signature=Not InstalledCTL_TFTP_Server=N/AITL_Signature=xx xx xx xx xx xx xx xx xx  ITL_TFTP_Server=CM2.domain.orgStatusCode=3

[chathurangaj@kbsl.lk]

Just to take an idea...

Is there any other phone types are got registerd ?

What are the TFTP nodes in the cluster ? is the TFTP service is running ?

[paschooltech]

Yes, other phones are registered. Some 7841s, 7842s, 7921, 7941, 3905.  However, 8811s and 7832s do not work. , The TFTP nodes are up and running. 

After some packet tracing with a TAC, we have determined that the Call Manager is not receiving any DHCP requests, but the phone is still receiving a DHCP IP. Not sure how that's possible if other phone models work. 

[Nithin Eluvathingal]

so who is acting as your DHCP server. is it CUCM or another device ???

[paschooltech]

CUCM is acting as our DHCP server.

[paschooltech · Accepted solution]

The solution was to move our DHCP from CUCM to a Windows server. Everything works perfectly now.