12 Phone Models Not Supported by CUCM 12.0

12 phone models not supported by CUCM.
Reza Mousavi
Reza Mousavi
3 min read

Before the upgrade to CUCM 12.0, check the following phone models; if you use any of these deprecated phone models on an older release of Unified Communications Manager
and you upgrade to a Unified Communications Manager release that doesn’t support the phones, the phones
will not work after the upgrade completes. Also, many of the following are not supported in CUCM 11.5 either.

As of Cisco Unified Communications ManagerFirmware Release 12.0, the following phones are not supported:

1-Cisco Unified IP Phone 7970G
Cisco Unified IP Phone 7970G

2-Cisco Unified IP Phone 7971G-GE
Cisco Unified IP Phone 7971G-GE
3-Cisco Unified Wireless IP Phone 7921G
Cisco Unified Wireless IP Phone 7921G

4-Cisco IP Phone 12 SP+
Cisco IP Phone 12 SP+

5-Cisco IP Phone 30 VIP
Cisco IP Phone 30 VIP

6-Cisco Unified IP Phone 7902
Cisco Unified IP Phone 7902

7-Cisco Unified IP Phone 7905
Cisco Unified IP Phone 7905

8-Cisco Unified IP Phone 7910
Cisco Unified IP Phone 7910

9-Cisco Unified IP Phone 7910 SW
Cisco Unified IP Phone 7910SW

10-Cisco Unified IP Phone 7912
Cisco Unified IP Phone 7912

11-Cisco Unified Wireless IP Phone 7920
Cisco Unified Wireless IP Phone 7920

12-Cisco Unified IP Conference Station 7935
Cisco Unified IP Conference Station 7935

Why deprecated?
The legacy phone models are deprecated for the following reasons:

1-Security—since legacy phone models are not updated with critical software fixes, we have limited ability to protect customers when security issues arise.
2-New feature implementation—legacy phone usage slows down the implementation of newer features.
3-Sustaining—no development support or regression testing is currently being done for these older phones.

What will happen?
If you are running any of these phone models, after you upgrade and switch over to the new release, registration will be blocked on the phone. If the phone remains powered on, the phone will make repeated registration attempts, which will create unnecessary network traffic and a load on the Cisco CallManager service.