Caller ID on internal calls on Yealink T-54 shows Unkonw

[mmarks9156]

We recently moved our company to 3CX and when I receive an internal calls on the Yealink phone the caller ID shows Unkonw? The caller ID works fine using the 3CX mobile application on my cell phone. We are using 3CX version 18.0.237. Any assistance is greatly appreciated. No issues with outbound calls to another extension or external numbers.

 

[leejor]

It's not even the word Unknown, or part of it, which would lead me to believe that it is a firmware, or input error (someone misspelled the word). It is just one phone that is doing this? Do external calls display correctly?

 

[mmarks9156]

As far as I know just one phone having this issue. Yes external calls displays properly.

 

[leejor]

Does this happen on internal calls from any and all extensions? I'm just wondering if the word Unkonw was entered into the local directory of the set. Does the calling extension number show at all?

 

[ChrisC_3CX]

I'd check what @leejor mentioned first and if you can't figure it out, give the following a try:

• Make absolutely sure you're running the latest supported firmware.
• Delete the IP Phone from the current extension in the Management Console.
• Create a new test extension.
• Factory reset the IP Phone.
• Reprovision it using the new test extension and the 3CX Default template.
Do you get the same behavior?