[VoiceOps] Grandstream ATAs for Faxing

[Tim Jackson]

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..

--
Tim

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 credit
>> card machines.  We support t38 but have often gone to g711 pass-through.
>> Echo cancellation is disabled. We've tested them with the various jitter
>> 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 transmissions
>> will work for a period of time and then begin failing without any changes.
>>
>> We are a CLEC who control the QoS from device out to the PSTN. We've found
>> that replacing the ATA with a Adtran TA90X usually corrects the issues but
>> 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 config
>> changes you've made from their default.  Which models you've used with which
>> firmware?
>>
>> Anyone have other ATA's that seem to work well for faxing and credit card
>> 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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>
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