Cisco IP Phone 6800 and CUCM

[fgasimzade]

Hello everyone,

Is it somehow possible to use these phones with Cisco UCM 11.5?

Could not find any precise answer on the web

[b.winter]

If you have 5.1(2) installed on the phone, you can register it as a 3rd party sip device (advanced)
https://youtu.be/75018CuYzKc

[fgasimzade]

Thank you, @b.winter, will try

[FuadG]

I finally managed to get my hands on it.

Software version is sip68xx.11-3-1MES-4.loads, and the web interface does not look like the one in the video above.

The phone tries to activate something at activate.cisco.com and then I can see this error in the provisioning logs (192.168.16.4 is our cucm server)

[https://192.168.16.4:443/*]Resync Failed. Reason: Error - Certificate error

So what comes to my mind, would it be possible if we make the phone connect to our tftp server to get 5.1(2) and then follow the guide you provided or it would be just wasting of our time?

[Maren Mahoney]

If you look at the Data Sheet for the 6800 Series phones and go to the "Platform support" section you will see a list of compatible systems, and CUCM is not among them. As @b.winter suggested, though, you might be able to register the phone as a 3rd party SIP device.

Maren

[RAustin70]

Yeah, I have about 13 of them on my CUCM.  they worked on 11.5, 12.5 and 14 so far.  I installed them as Third Party SIP (Advanced)

Now I am working on getting them installed as Third-party AS-SIP device with SRTP

[FuadG]

Hello @RAustin70 

What is the firmware you are using on these phones?

[RAustin70]

the one I am looking at right now is

Firmware Version:

IPDECT-V2/04.80/B0012/27-Jul-2020_16:01