IP Phones don't display Caller ID on incoming calls
We have recently installed a UC540 system with two BRI connections to the ISDN. Incoming and outgoing calls are fine however when a call is received the phone displays 'Unknown number' and 'From: <blank>' regardless of the caller. Even numbers within the local directory show up like this. Any assistance with this would be appreciated!
I got the same problem; but I can't execute the debug what Paolo says. My router are running Version 15.0(1)M1 of IOS, and there's imposible introduce it. I tried with many options and searched with "?":
SIP traces provide key information in troubleshooting SIP Trunks, SIP
endpoints and other SIP related issues. Even though these traces are in
clear text, these texts can be gibberish unless you understand fully
what they mean. This document attempts to br...
Please find the attached HTML document, download and open it on your PC.
This provides an easy to use form where you simply answer a few
questions and it will render the proper jabber-config.xml file for you
to copy/paste. There is built in logic to verif...
CUCM Database Replication is an area in which Cisco customers and
partners have asked for more in-depth training in being able to properly
assess a replication problem and potentially resolve an issue without
involving TAC. This document discusses the bas...