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

[Lelio Fulgenzi]

I'm pretty sure all analog ports don't take a device license, so this is the route I take with VG248 and VG224. It makes it much easier in the long run for procedures. 

--- 
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) 


----- Original Message ----- 
From: "Jeff Ruttman" <ruttmanj at carewisc.org> 
To: cisco-voip at puck.nether.net 
Sent: Tuesday, May 11, 2010 8:54:15 AM GMT -05:00 US/Canada Eastern 
Subject: Re: [cisco-voip] What's the pro and con for ATA, compared to FXS 



How do you disable an unused port on an ATA? 

I don't know that we've experienced calls dropping, but you are right that an unused port does try to connect to CM and at the least generates lots of fails in the event logs. I go ahead and add the second port into CM, so it can register, and I just don't configure a line on it. This stops the error messages and perhaps stops calls dropping as you describe. 

I only have experience with ATAs and largely they've been OK. Most problems have been fixed by using 9600 or 14400 baud rates on fax machines, and I think we also had to disable Super G3 on a couple newer fax/copiers. 

Thanks 
jeff 


From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of polo person 
Sent: Tuesday, May 11, 2010 3:54 AM 
To: junks2you at gmail.com; cisco-voip at puck.nether.net 
Subject: Re: [cisco-voip] What's the pro and con for ATA, compared to FXS 


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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