[cisco-voip] ATA problems

[Tim Medley]

I have hundreds of ATA's deployed with CallManager for faxing and they work
just fine. There are a couple of things you have to do. First, you have to
set the ATA to only use G711, next you need to disable VAD and finally you
need to ensure that the fax machine does not attempt to connect at a higher
rate than 14.4bps.

 

To set the ATA to use G711, put the ATA in a G711 device pool. Using the web
interface for the ATA you can disable VAD and set the ATA to Fax mode by
altering the ConnectMode field; specific instructions for this can be found
in the ATA-186 administrators guide found on CCO. Last, make sure that the
fax machine is trained down to 14.4bps or lower.

 

Tim

 

 

 

  _____  

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Vincent De Keyzer
Sent: Thursday, November 18, 2004 9:52 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] ATA problems

 

Hello,

 

we are using CCM to offer Centrex services to our customers.

 

Typically, each customer has a few phones + one ATA. Each customer is in a
different location across the city.

 

Now, one of my customers has problems with its ATA: transmission breaks
during the first page, or during some other of the pages - and sometimes it
just gets through fine. No pattern can be identified here.

 

Of course, I thought of slips on the GW, but the gateway is used by all the
customers, and no other customer complains about this.

 

A tech has been on site and tried to receive faxes on his laptop, without
success. So it's not the fax machine either.

 

Any ideas?

 

Vincent

 

 

 

 

 

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