[VoiceOps] Grandstream ATAs for Faxing

Carlos Alcantar carlos at race.com
Tue Sep 9 16:31:11 EDT 2014

Send and pray is what I¹ve always said with modems and voip.  You can get
it working about 98% of the time but there is always those gotchas that
will make you pull your hair out and make you waste hrs and hrs or time.

Carlos Alcantar
Race Communications / Race Team Member
1325 Howard Ave. #604, Burlingame, CA. 94010
Phone: +1 415 376 3314 / carlos at race.com / http://www.race.com

On 9/9/14, 9:03 AM, "Tim Jackson" <jackson.tim at gmail.com> wrote:

>Sadly people still need outbound fax.. Just wait until you have that
>user with an ATA and a fax machine faxing their fax->email service 40+
>times a day to get documents via email..
>On Tue, Sep 9, 2014 at 8:33 AM, Victor Chukalovskiy
><victor.chukalovskiy at gmail.com> wrote:
>> An alternate route is to put you fax DIDs on a centralized fax-2-email
>> platform. Thereby avoiding any ATA-related hassles.
>> If done properly, will give you very satisfactory fax success rates
>> On 14-09-09 10:39 AM, Jamey wrote:
>>> Hello,
>>> We having been utilizing Grandstream ATAs (HT70X and GXW400X) as analog
>>> hand offs with our Hosted Services built on the Broadworks platform and
>>> Sansay's SBC.  We've had regular trouble when using them with fax and
>>> card machines.  We support t38 but have often gone to g711
>>> Echo cancellation is disabled. We've tested them with the various
>>> buffer lengths, Rx/Tx setting adjustments and various impedance
>>>values.  The
>>> results seem very inconsistent.  This is site to site as well as
>>> inconsistent results at the same site.  The faxing/credit card
>>> will work for a period of time and then begin failing without any
>>> We are a CLEC who control the QoS from device out to the PSTN. We've
>>> that replacing the ATA with a Adtran TA90X usually corrects the issues
>>> this is not a cost effective solution.
>>> Anyone have similar experiences with Grandstream ATAs?  Anyone have
>>> reliable VoIP faxing with their ATAs? If anyone has been successful
>>> integrating the Grandstreams, I would be interested in knowing what
>>> changes you've made from their default.  Which models you've used with
>>> firmware?
>>> Anyone have other ATA's that seem to work well for faxing and credit
>>> machines?  We'd like to keep our offering to as few manufacturers as
>>> possible that can offer 2, 4, 8+ FXS ports.
>>> Thanks for any and all recommendations.
>>> Jamey
>>> Socket Telecom
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