7906 not working in SRST with 12.3(11)T11

[matteo.margheritini]

hi friends, i have this problem, when 7906 goes in SRST(Call-manager-fallback) they are unable to register with Gateway 2811 with that ios version, when they are registered with CCM all goes right.What is the problem? someone can help me?

thanks a lot for all

[paolo bevilacqua]

Are both CM and SRST addressess appearing in the settings menu of 7906 ?

I would also upgrade anyway to 12.4(9 or 11)T to sort out any bug in older version.

At the same time check the load revision on the phones.

[matteo.margheritini]

Yes, now I'll try with another ios. It can be a possible bug in older version. Thanks for all. I try.