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New Member

Fax problem on FXS port

I have a 3725 running CME 3.1 with a fax machine connected to an FXS port. Since the upgrade from CME 3.0 to 3.1 I have been unable to send faxes. Fax machine gives a communication error. It dials and starts the connection to the destination fax then fails.

Here are excerpts from the config. The only thing that changed was the CME to 3.1 and the IOS to 12.3.7-T to support CME 3.1

Calls come in on a T1 PRI

!

voice translation-rule 23

rule 1 /1569/ /1111/

!

!

voice translation-profile 1569_Calls

translate called 23

!

!

voice-port 0/0:23

!

voice-port 2/0/0

!

voice-port 2/0/1

!

!

dial-peer voice 1569 pots

translation-profile incoming 1569_Calls

incoming called-number 1569

direct-inward-dial

port 0/0:23

!

!

dial-peer voice 1111 pots

description Calls to Analog Fax

destination-pattern 1111

port 2/0/0

!

Thanks.

2 REPLIES
Silver

Re: Fax problem on FXS port

check if there is any codec mismatch.

New Member

Re: Fax problem on FXS port

Try this configuration on both ends, it fixed a number of fax issues we ran into...

!

voice service voip

fax protocol pass-through g711ulaw

!

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