Grandstream PBX UCM6102 Shows Account is not Registered. What Can I do?

December 28, 2016 by Ying-Hui Chen

Our tech support team at VoIP Supply offers great pre- and post-sales support plus provisioning, consultations, configuration, and installation help. We get a lot of VoIP hardware and software questions and would like to share the solutions with everyone.

In previous Mom’s calling Q&A series, we have discussed: Jabra UC Voice 550 MS: How to Increase the Speaking Volume? Today, we have more new real questions and answers from VoIP users just like you.


Grandstream PBX UCM6102 Shows Account is not Registered. What Can I do?

grandstreamucmQ: I am using a Grandstream PBX (UCM6102 in the demo kit) for the first time. My phone is showing up under zero config but I get “Account is not registered”. What am I overlooking?

A: You must create the extension first and then assign the extension in Zero config by clicking on the edit (“pencil icon”) and then drop down to the Account, you will see the extension there and this will associate with the IP address of the phone. Click on the “update icon” and this will send a NOTIFY to the phone to SIP register the phone.


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  • Dalton


    I wonder if Grandstream UCM’s has any issues registering to 3CX PBX? no matter what i do, it wont register.

    Any particular reason or something im missing here?

    I can register GXP phones, but not the UCM’s models at all.

    Any help greatly appreciated.

    Thank You

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