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PVDM Card for 2811

I have one Cisco 2811 router. It doesn't have any PVDM cards. My question is, if i have 4-FXO card and IP Phones are connected on router. Do i need to use DSP resources to communicate between ip phone and between ip phones and PSTN?

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Hall of Fame Super Gold

PVDM Card for 2811

Yes, without exclusion or other possibility.

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