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CPU usage on 2811 for four E1s

We currently have 2811 Voice Gateways with two E1s into a two-port VWIC and one PVDM2-64. Using the DSP calculator, I can add a second VWIC and PVDM2-64 to support another two E1s, but get a warning message about CPU usage. Can a 2811 be used (with two PVDM2-64) to terminate 120 calls (no transcoding or conferencing), or is this being a bit over-optimistic?

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Re: CPU usage on 2811 for four E1s

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