[VoiceOps] Fax

[Shawn L]

More than we'd like to.  Medical institutions and law firms seem to be the
two biggest ones.  We have one hospital that has multiple PRIs just devoted
to faxing -- thankfully that is TDM, so in general it just works.
Otherwise, for those that use SIP there doesn't seem to ever be a "just do
X, and it'll work".  There's always some trial and error with the
individual site, the MTA / ATA model, the fax machines involved, etc.

The worst one I have seen was during the height of COVID.  A new testing
lab was opened and they could not be convinced that sending 1500 page faxes
was fraught with potential problems.  Regardless if there was an ATA
involved or not.  In the end, we declined to provide them service because
we knew nothing good would come of it.

On Fri, Apr 19, 2024 at 12:14 PM Jawaid Bazyar via VoiceOps <
voiceops at voiceops.org> wrote:

> What are everyone's thoughts on trying to do fax this way, versus, an
> E-Fax solution that supports receiving as well as sending ?
>
> How many legit physical fax machines are you all supporting out there?
>
> Jawaid
>
>
> On Fri, Apr 19, 2024 at 12:13 PM Mark Wiater via VoiceOps <
> voiceops at voiceops.org> wrote:
>
>> I can echo, that the ATA matters. But so does the configuration of the
>> faxing device (14400 Baud and ECM on), the switches that the calls go
>> through, the configuation of the network equipment and the quality of the
>> internet connection, even the cable type connecting the ATA and the fax
>> device sometimes.
>>
>> I have excellent faxing history with Cisco ATA-191's using G.711 (but not
>> T.38 with the softswitch I use predominantly) and a client network with
>> well configured QOS enabled firewalls.
>>
>> It's not logical to me, but I've even seen instances where using a 2
>> conductor cable from fax to ata improved communication over a 4 conductor
>> cable.
>>
>> Nathan and Ross covered other great points as well.
>>
>> Mark
>>
>> On 4/18/2024 10:22 PM, KARIM MEKKAOUI via VoiceOps wrote:
>>
>> Hi VOIPOPS Community
>>
>>
>>
>> Do you know about any fax over internet solution that works? We tried
>> multiple ATA and multiple ATA configurations, sometime it works sometimes
>> not.
>>
>>
>>
>> Also, do you know about any eFax solution provider that works good.
>>
>>
>>
>> Thanks in advance for your help.
>>
>>
>>
>> KARIM
>>
>> MEKTEL INC.
>>
>>
>>
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