[cisco-voip] Analog modem and faxes?

Wed Dec 3 15:36:48 EST 2008

If you plug an analog phone into the ATA it's can't call in/out. Doesn't
show registered in CCMAdmin.  I'd change TAC to focus on that.  Verify
your TFTP option 150 and then you might have to look at trace/log files
around the registration with CallManager.  You can also sniff the
Ethernet port with Ethereal and see if SCCP packets are going
back/forth.

The dsp in the ATA won't go past 14.4 reliably.....You need to disable
Super G3 and ECM on the fax machine.  If you can't disable them you may
need to replace the fax machine or find another solution other than
ATA-186.

If you want a better dsp buy the VG224.

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Weigand, John
V.
Sent: Wednesday, December 03, 2008 3:05 PM
To: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Analog modem and faxes?

 Litigation
Management<http://www.medicineforthedefense.com/main/gifs/LMI-side-pms69
0wBlack.jpg> 

Serious Medicine for the Defense (r)
<http://www.medicineforthedefense.com/>  

Sorry to resurrect an older thread, but we've been trying to figure out
how to handle this going into a new building. We have an ATA 186 we've
been testing with, turned off ECM and V.34 mode on the fax machine, but
as soon as it's plugged into the ATA, the red light on the ATA goes on,
never turns off, and it won't place or receive calls. 

TAC is basically refusing to help since the fax machine by default runs
at 33.6, and they say it just won't work, period, but that doesn't seem
quite right to me. Anyone run into a problem like this before?

John V. Weigand
Help Desk Support/Executive Support

Litigation Management, Inc.
300 Allen-Bradley Drive
Suite 200
Mayfield Heights, OH 44124

Tel: 440-484-2000
Fax: 440-484-2009
Cell: 
email: jvw at medicineforthedefense.com 

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From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Fuermann, Jason
Sent: Friday, October 31, 2008 5:01 PM
To: 'Jonathan Madziarczyk'
Cc: 'cisco-voip at puck.nether.net'
Subject: Re: [cisco-voip] Analog modem and faxes?

We are using VG224's in SCCP modem pass-through. Most of ours faxes
didn't require configuring. However, there were a few that we had to
turn ECM off on. We are also using modems (Visa machines primarily) with
this configuration without problems (our ATM's were temperamental but
apparently they didn't use standard modems).

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Lelio Fulgenzi
Sent: Friday, October 31, 2008 2:33 PM
To: Jonathan Madziarczyk
Cc: cisco-voip at puck.nether.net
Subject: Re: [cisco-voip] Analog modem and faxes?

It's not just the gateways you have to configure, but the fax machines.
Have you turned off SG3 support? Essentially you have to put their max
speed to 14,400 and turn off error correction. Similar to modems, max
speed is 14,000.

---
Lelio Fulgenzi, B.A.
Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
(519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
"Bad grammar makes me [sic]" - Tshirt

----- Original Message -----
From: "Jonathan Madziarczyk" <JMad at cityofevanston.org>
To: cisco-voip at puck.nether.net
Sent: Friday, October 31, 2008 1:21:53 PM GMT -05:00 US/Canada Eastern
Subject: [cisco-voip] Analog modem and faxes?

So what is everyone doing about analog data devices?  I've got a couple
of fax machines and modems using VG224 and ATA186 devices and I'm still
having issues with them.  I've gone through TAC and set up the adapters
and my voice gateways to match their fax/modem recommendations, but I
still have intermittent issues (faxes failing, modems not sending the
full info, etc.)

Modems are still a little fuzzy for me, not sure how best to get rid of
those, as for faxing, I'd like to get off of the analog fax machines all
together, but not sure how to do that yet either...what are you guys
using?

Obviously our interest is to keep any changes low cost and reliable.

Jonathan 

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