FXO card not recognized

Unanswered Question
Jun 2nd, 2008
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I just installed a card into a 3850 router, when I tried to configure the card with:

voice-card 0

I get not "not recognized"

I have tried 1, 2, 3 and 4 no luck.

When I do sh ver I see the card.



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Overall Rating: 5 (2 ratings)
Adrian Saavedra Mon, 06/02/2008 - 14:21
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Hi friend,

Please check with show diag if you have PVDM installed. If not, it is possible that you can't configure the card.

Please check this links:

High-Density Packet Voice Digital Signal Processor Module:


PVDM installation and removal:


Check for keywords 'DSP' or 'PVMD' in this 3800 ISR product data sheet:



- adrián.

Sushil Kumar Katre Tue, 06/03/2008 - 00:58
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Hi EA,

This has to be an issue of No/Insufficient PVDM on the router.

First check that your router is installed with minimum IP Voice Feature Set of IOS and then check if you have PVDMs installed on the router.

Kindly send show version ad show diag outputs.

-> Sushil


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