Fax + FXS + DID = outgoing fax problem?

Answered Question
Mar 13th, 2009

Hi there,

CUCM 6.1

IOS gateway with H.323

4 port FXS

PRI with DIDs

I am reading in some articles that fax machines on FXS ports on PRI DIDs, can only receive faxes and can not send faxes. Has anyone experienced this? Has anyone been able to set this with a working incoming and outgoing faxes?

thanks,

Rdianat

I have this problem too.
0 votes
Correct Answer by Paolo Bevilacqua about 7 years 10 months ago

They mean FXS ports in analog DID signaling mode, that is a special telco arrangement. And that is correct, no outbound calls on these lines.

Nothing to do with regular FXS ports when the telco connection is PRI.

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rdianat Fri, 03/13/2009 - 11:14

Please note: I don't have anything set yet. I will be doing it in near future and I have heard conflicting information from some people that fax can not be sent outbound when connected to FXS and when used with PRI DIDs.

My question is: Have you ever set it working this way?

I am not trying to make it work as I do not have it ready yet. I am simply asking if anyone has set it working? This is important as this is a tight deadline implementation and I do not want to get into surprise situation.

So please do not ask what is my configuration.

Thanks,

rdianat

rdianat Fri, 03/13/2009 - 12:29

Thanks for your strong YES bvilacqua.

My confusion is coming from:

Cisco Voice Gateways and Gatekeepers

By Denise Donohue, David Mallory, Ken Salhoff

...............................................

Publisher: Cisco Press

Pub Date: August 17, 2006

Print ISBN-10: 1-58705-258-X

Print ISBN-13: 978-1-58705-258-3

Pages: 648

Note

You cannot use FXS ports that are configured for DID service to place outbound calls.

Thanks,

rdianat

Correct Answer
Paolo Bevilacqua Fri, 03/13/2009 - 12:58

They mean FXS ports in analog DID signaling mode, that is a special telco arrangement. And that is correct, no outbound calls on these lines.

Nothing to do with regular FXS ports when the telco connection is PRI.

Please remember to rate useful posts with the scrollbox below.

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