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Community Member

CALL MANAGER 3.2 and SRST on a 2651 Router

Where in the Call Manager do I configure SRST so it lets the phones know what router using SRST.

2 REPLIES
Community Member

Re: CALL MANAGER 3.2 and SRST on a 2651 Router

SRST is configured on your IOS gateway, not in call manager. Your IP phone has to have a phone load that supports SRST as well. If you are running CM 3.1(3a) or higher, you should be ok.

In the gateway, the command is

router(config)#call-manager-fallback

ip source-address port 2000 strict-match

http://www.cisco.com/en/US/products/hw/modules/ps2641/prod_module_installation_guide09186a00800c946a.html#xtocid2

Community Member

Re: CALL MANAGER 3.2 and SRST on a 2651 Router

I stand corrected, it looks like in CCM 3.3, you can define a device other then your LAN GW as a SRST device!

http://forums.cisco.com/eforum/servlet/NetProf?page=netprof&CommCmd=MB%3Fcmd%3Ddisplay_location%26location%3D.ee90454

Very interesting....

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