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FXS Card problem

I am having a router cisco 3640 router.In this we are using NM 2v card for Voip.In this one FXS Card was not working.So we replaced the FXS card with new card. When we had replaced the card the router was giving fatal error & rebooting. So we have removed the NM 2 V Card from the router.Now without this NM2v card the router is working fine.Pls give the soloution for this problem.

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Anonymous
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Re: FXS Card problem

It seems like a physical problem, a RMA for the NM-2V needs to take place to replace that module.

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