[cisco-voip] advantages of fax relay over fax passthrough?

Jason Aarons (US) jason.aarons at us.didata.com
Mon Apr 19 14:13:22 EDT 2010


Fax relay only listens for T.30, right?   Since I never know if customers are using any modems (FedEx, Pitney Bowes Postage meters, HVAC, Security, etc) I just use modem passthru in global voice service voip.

I’ve seen some cool stuff with T.38 and fallback to modem passthrough, but still see a lot of T.38 bugs requiring testing, etc.

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Monday, April 19, 2010 1:49 PM
To: cisco-voip voyp list
Subject: [cisco-voip] advantages of fax relay over fax passthrough?

can anyone help me understand the advantages of fax relay over fax passthrough.

From what I gather, if our network is high speed, low latency, low jitter, we should look at using passthrough since it's the easiest to configure.

Why should I use fax relay?

---
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Cooking with unix is easy. You just sed it and forget it.
                              - LFJ (with apologies to Mr. Popeil)


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