Can anyone tell me why or how to fix an issue with the Cisco UC500. We are getting an unknown SIP Registration message from the Cisco UC500. I don't even have the '6782367070' programmed anywhere in UC500. So, I don't how it is sending out this SIP Register message to our network.
REGISTER sip:192.168.1.1:5060 SIP/2.0
Via: SIP/2.0/UDP 192.168.1.2:5060;branch=z9hG4bK458758
From: <sip:[email protected]>;tag=522D180-24EB
To: <sip:[email protected]>
Date: Tue, 16 Mar 2010 14:34:37 GMT
Seq: 557 REGISTER
Contact: <sip:[email protected]:5060>