Unable to Register Phones 6921 in SRST Mode

[Pablo Ivan Mendoza Neri]

Hello

I have a CUCM 7.1.5 and lot of IP Phones 6921 and 7940

then when I test the SRST Mode the phones 6921 not register whit the gateway.

IOS version: c3825-spservicesk9-mz.124-15.T13.bin

Any Idea fot it?

Regards.

[Jaime Valencia]

You need SRST 8 to support 6921's

Cisco Unified CME and Cisco IOS Software Version  Compatibility Matrix

http://www.cisco.com/en/US/docs/voice_ip_comm/cucme/requirements/guide/33matrix.htm

Cisco Unified SRST 8.0 Supported Firmware,  Platforms, Memory, and Voice Products

http://www.cisco.com/en/US/partner/docs/voice_ip_comm/cusrst/requirements/guide/srs80spc.html

HTH

java

If this helps, please rate

www.cisco.com/go/pdihelpdesk

[Pablo Ivan Mendoza Neri]

Thank's I'll check this information.

Best Regards.