The Unified Border Element box-to-box redundancy High-Availability implementation supports media preservation over an HSRP switchover of SIP to SIP calls. Call signaling preservation is also supported in the latest Cisco IOS Software release 15.2(3)T1.
The RTP streams of established calls are checkpointed between the Active and Standby routers via the HSRP protocol. Therefore the media streams of established calls are preserved over the HSRP failover from the Active to the Standby routers. Calls in a transient state (calls that are not established yet, or are in the process of being modified with a transfer or hold function) at the time of failover are disconnected. Also, any calls using DSP services such as transcoding are not preserved.
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...