We are attempting to register a Cisco phone to an a 3rd party PBX. I wish this was not the case, however its best effort at this point. My assumptions are that we need to update the cisco phone with sip firmware along with adding a third party sip endpoint license to the PBX. We have SIP firmware on the phones and XML files, but the phone does not attempt to register.
My assumption is we need to edit the XML files but to what extent? Call Server Address, extension, password, etc? Does an XML file need to be customized for each phone?
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