cisco 2811c does not support some voip commands

[ronin]

Hi Guys

I tried to config a sip trunk on cisco 2811c router and I believe it does not support some VoIP commands

like allow connections sip to sip in voice service voip 

is it true that this 2811c does not support CME VoIP commands even with different kinds of 2800nmc IOSs?

thanks in advance

[R0g22]

What is the complete IOS in use ?

[M02@rt37]

Hi @ronin

You need an IOS IP voice on your ISRG1 2811 router.

With ISRG2 we need to activate licence whatever the IOS.