FXS Ports Fax Machine

Unanswered Question
Sep 4th, 2009
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Hi All,

I am having trouble with a fax machine connected to a fxs ports in a voice gateway.

The fax machine looks to be able to send faxes ok, but when an incomming call is received it rings onces then bascally hangs up.

From a "debug isdn q931" I can see a "user busy" error message is sent back to the caller.

When calling from an IP phone a "sh voice port sum" only show the call as connecing it never actually connects the call.

I have tried setting the fxs port as both sccp and mgcp, but symptions (?) are the same for both.

Any ideas on where to look nect would be greatly appreciated.



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Overall Rating: 2 (1 ratings)
Nicholas Matthews Tue, 09/08/2009 - 07:50
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Hi Jason,

It is very likely that your port isn't registered with MGCP or SCCP, or you aren't matching the dial peer correctly.

Do a 'debug voip dialpeer' and place an outgoing call. Check the incoming call and see if it has 'service mgcpapp' or 'service stcapp' on it. You're likely using SIP/H323 for outgoing calls and don't realize it.



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