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Cisco 2811

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.

  • Unified Communications Applications
2 REPLIES
Cisco Employee

Re: Cisco 2811

we have a tool to help with that, pretty useful. try it

DSP Calculator

http://www.cisco.com/cgi-bin/Support/DSP/cisco_dsp_calc.pl

BTW: a DSP can only be used for voice termination/xcoder OR CFB. if it's CFB it CANNOT be used for anything else

HTH

java

if this helps, please rate

HTH

java

if this helps, please rate

www.cisco.com/go/pdi

Re: Cisco 2811

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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