Cisco 7900 series IP Phone fails to register to U1911

Hello, mumuy!

Thanks for choosing our community!

Do you try to use the Huawei IP phone to register to U1911?  Is there any error information?

Waiting for your feedback!

Hi, dear, you are welcome!
I've tried to use my eSpace 7910 IP Phone, it works well!
Are they incompatible?

Run the show softargu information type all keyword network command to check the configuration. If the ID is not value 0, run the config softargu type ID value 0 to change it.
Note: The ID is that you had queried.

Hi,

Please collect the SIP trace with LMT tool when the cisco IP phone start to register to u1911, check whether U1911 receive the register message, if u1911 did not receive, you need to check cisco IP phone and the network device between u1911 and cisco IP phone.

what is IP phone

An IP phone, also called a VoIP phone, is a phone that uses internet protocol, rather than the circuit-switched PSTN. An IP phone connects through an Ethernet cable, rather than a phone jack, to the internet, where is connects to the IP address of either the VoIP provider or the hosted PBX provider. From a user’s perspective, it works just like a traditional phone, but better.