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

Tue May 11 11:11:44 EDT 2010

Yes, this is how I disable the port on an ATA.

We need to do this because we make a fixed charge back to each department for each extension number in use, so we can't simply configure a spare extension on the spare ATA port as the department will get billed for it.  I know it doesent sound like a big problem, but when you have 16,000 extensions of which around 1,200 are analogue (ATA/VG224).........

Date: Tue, 11 May 2010 16:44:10 +0300
From: ahmed_elnagar at rayacorp.com
To: jbuchanan at ctiusa.com; ruttmanj at carewisc.org
CC: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] What's the pro and con for ATA, compared to FXS

To disable a port on ATA go to the web page of the ATA and do the below:

change the Cisco ATA EPID1orSID1 parameter value to 0 to disable the Phone 2 port. (To disable the Phone 1 port, you must change the EPID0orSID0 parameter value to 0.)

 Best Regards;
  Ahmed Elnagar
  Senior Network PS Engineer
  Mob: +2019-0016211

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of James Buchanan
Sent: Tuesday, May 11, 2010 4:23 PM
To: Jeff Ruttman; cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] What's the pro and con for ATA, compared to FXS

Well, I just usually add the second port which will have the same effect. I’m not sure on disabling either.

Thanks,

James Buchanan | Senior Network Engineer | Mid-Atlantic | Presidio Networked Solutions 
12 Cadillac Dr, Suite 130, Brentwood, TN 37027 | jbuchanan at presidio.com
D: 615-866-5729 | www.presidio.com <http://www.presidio.com> 
CCIE #25863, Voice

From: cisco-voip-bounces at puck.nether.net [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Jeff Ruttman
Sent: Tuesday, May 11, 2010 7:54 AM
To: cisco-voip at puck.nether.net
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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