[cisco-voip] FXS Port stucks in Off-Hook state on NM-HDA

[rschuknecht at gmx.de]

Hi,

i have some trouble with an FXS Port on an NM-HDA which stucks in the Off-Hook state, after some time of normal operation. The Voice-Port is in Off-Hook state regardless of if there is an Enddevice attached or not. Even an reload of the router does not help.
The voice port is configured for loop-start. The NM-HDA is housed in an Cisco 3725 running IOS Vers. 12.3(14)T2 with H.323 signalling.

Is there anybody who has seen this before? Could this be caused by an IOS-Bug or is it more likley that the NM-HDA is faulty?

Regards

Robert
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