Using a IP Phone, when i call to pbx1 it works. But if i call to pbx 2 i not ear ringback tone. In the debug isdn q931 only i see a difference in the RX <- PROGRESS. When i receive this param not ear ringback tone.
No Ringback tone issue is commonly caused when the inbound call does not come in to the Cisco gateway/ router with a PI=3. ISDN switches send the PI=3 in the Setup message to inform the gateway that the originating call is non-ISDN and in-band messages are expected.
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...