AF41 is actually a Per Hop Behavior (PHB) which basically tells a DiffServ compliant node how to treat a packet. The decimal DSCP value for AF41 is 34. AF41 is the recommended PHB for video. Take a look at the following link for more information on PHBs. The bandwidth you reserve for video will depend on the data rate supported by your video unit. The link below gives details on capacity planning for video. You'll need to consider the data rate for your video unit, how many video units you have, and how many should be able to make simultaneous calls across the WAN. As referenced in the link, if your video units are capable of consuming more bandwidth than you have available, you will need to implement some for of Call Admission Control (CAC).
The ability to connect 3 video endpoints will be dependent on your hardware. In general, the answer is yes, this is possible. Take a look at the manufacturer's website for the specific setup.
In this example, it is assumed that the video endpoint will mark the packets with the correct dscp, therefore making it possible to match the packets based on this marking. If the endpoint does not mark the correct dscp, you would need to match the video stream and control traffic based on another criteria such as port number.
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...