Cisco 2811

Unanswered Question
Apr 24th, 2009

I have a Cisco 2811 with (1) 4-Port FXO Card, and (1) 4-Port FXS card.

Can (1) PVDM2-8 chip support both Cards. I know that PVDM can be shared between Voice and Conferencing, and I just wanted to make sure that both FXO and FXS cards will be able to get channels assigned from (1) PVDM2-8 chip.

I have this problem too.
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Nicholas Matthews Fri, 04/24/2009 - 15:11

Hi Abbas,

The -8 refers to the maximum of 8 G.711 (low complexity) calls.

FXO and FXS ports will allocate resources upon bootup, unlike PRI's. With PRI's you can oversubcribe your DSPs, but analog ports just won't come up.

In this case 4+4 = 8 as long as you only use G.711, and your voice-card is set to codec complexity flex (default).

-nick

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