FXS Ports Hanging

Unanswered Question
Dec 31st, 2007

I have a problem where a 3640 VoIP gateway FXS ports will hang for over a minute after a call is disconnected. Overtime, the ports will completely lock up and need to be reset. Here is the scenario:

H.323/3640/FXS-------FXO/PBX/Digital-Phone

So, the 3640 connects H.323 to a PBX with FXS/3640-FXO/PBX. Here is what happens every time for over one minute after the call is hung up from the VoIP side:

PHNO-CRR01#sh voice port summ

IN OUT

PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC

============== == ============ ===== ==== ======== ======== ==

3/0/0 -- fxs-ls up dorm on-hook idle y

3/0/1 -- fxs-ls up dorm on-hook idle y

3/1/0 -- fxs-ls up up off-hook idle y

3/1/1 -- fxs-ls up dorm on-hook idle y

(call stuck in off-hook position)

I am wondering if I should use the commands for "timouts call-disconnect" or "timeouts wait-release" to help the FXS ports go on-hook, or are those commands for FXO ports only?

Also, are there any other suggestions?

Thx.

I have this problem too.
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smahbub Fri, 01/04/2008 - 09:46

This symptom is observed on VIC2-2FXS on H323 gateway. DSP unable to detect the on-hook signal correctly.

Workaround: reset DSP / reload the router

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