[cisco-voip] Fax Machine Blues

[Voll, Scott]

make sure that all your gateways are set to fax pass-through. and make sure all your fax machines are set to 14.4k rather then 33.6 or an auto setup that starts at 33.6k.  You will also want to make sure that ECM (error correction mode) is turn off on the faxes.  I have not had any problems with the ata's on port two but the wrong speed kills a guy.  most likely why some faxes work and some don't is because the fax on the other side only does 14.4 or 33.6 auto.
 
Scott

________________________________

From: cisco-voip-bounces at puck.nether.net on behalf of Rusty Painter
Sent: Mon 3/21/2005 4:42 PM
To: 'cisco-voip at puck.nether.net'
Subject: [cisco-voip] Fax Machine Blues


We have just installed Cisco VoIP.  Running CCM 4.0(2a)sr1a.  The system has been running in production for about 2 weeks now.  The phones seem to be working well (7905,7912, and 7960s).  We are, however having problems with fax machines.  People are able to fax to any internal extension.  When they try to fax out of the system, sometimes they can, and sometimes they get a fast busy signal.  When you dial that same number from a phone, a fax picks up.  Later on, they may be able to fax.  This is happening on both ATA186s and VG224s (mostly on the ATAs).  I was told by my vendor, BellSouth, that the ATAs have a problem with fax machines on port 2.  I moved all faxs to port 1.  Still have the problem.  Has anyone else experienced this?  If so, what did you do to resolve it?  Thanks. 
 
Rusty Painter
MCP/CCNA/Net+/A+
Microcomputer Technician
Dorchester County ITS
201 Johnston St.
St. George, SC 29477
Tel:           (843) 563-0022
Fax:          (843) 563-0033
E-mail:      rpainter at dorchestercounty.net <mailto:rpainter at dorchestercounty.net> 
 
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