I have several customers that want SRST for phones that are on the same VLAN as the CallManager servers. The way I understood that SRST works, the phone configuration traffic must pass THROUGH the SRST for the router to know about the phone. If the CM servers are on the same VLAN, though, the keepalives and phone configuration traffic does not pass through the router. See diagram below.
However, I have read in some of the documents that the phones use their "default gateway" if the CallManagers fail. If that is the case, then it seems to me that even if the router is not in the path between the phones and CMs, as long as the SRST router is the default gateway, the phones would register with it.
Since there has been no response to your post, it appears to be either too complex or too rare an issue for other forum members to assist you, or there is no public information available at this time. If you don't get a suitable response to your post, you may wish to review our resources at the online http://www.cisco.com/go/solutions. You may also contact our product information line at 1-800-553-NETS or a Cisco Systems Engineer at your local Cisco office or reseller. To locate your local Cisco representative, visit http://www.cisco.com/warp/public/687/Directory.shtml
If anyone else in the forum has some advice, please reply to this thread.
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...