[cisco-voip] What's the pro and con for ATA, compared to FXS

[polo person]

My experience of ATA's and faxes is not good. We have a combination of faxes + VG224 and faxes + ATA and I only seem to get problems with the ATA's. Quite often they will get their knickers in a twist and stop giving dial tone, and a power off / on sorts them out and they will then work again for a few months. Other times I get problems with fax transmission, ranging from failed sending / receiving to a fax being sent and received ok, but the sending fax machine reports it didn't get delivered so it proceeds to send it again...and again...and  again... (very frustrating for the recipient!) The solution to this one was to drop the speed of fax transmission down to 14400 and this cured the problem.

 

One thing to be wary of is that if the second ATA port is not being used, you must disable it. If you don't you will get calls dropping as the ATA will reset occasionally when the second port tries to talk to the CM, but as it isnt configured it doesent get very far. If a call is in progress on port 1 at the time it will get dropped.

 

Faxes on our VG224's seem to work on the main with very few problems (mostly fax passthrough, some fax relay).  We have CM 6.1.3.something_odd..... and are en-route to CM7 them CM8 over the course of this year. 

 

Cheers

 

Simon
 


Date: Tue, 11 May 2010 15:59:15 +0800
From: junks2you at gmail.com
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] What's the pro and con for ATA, compared to FXS


Hi Guys,

Can anyone explain to me what the pros and cons of ATA? We got both FXS and ATA 186 for FAXing in a call manager 7 controled environment.

Regards,

Charlie
 		 	   		  
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