Re: [hylafax-users] Unreliable fax services via VoIP connection

[Daniel Hillhouse <daniel.hillhouse@xxxxxxxxxxxxxxxx>]

I second Darren's comments.

I played with this for about 3 weeks. I tried everything from changing 
modems to upgrading the CODEC & linespeed, but none of it worked.

My VoIP provider said of all their customers on the Fax/Lossless codec, 
that only 5% reported they could regularly send & receive faxes.

Cheers
Daniel

Lucas Barbuto wrote:

> Hi all,
>
> My office is connected to the public phone network via a virtual PRI 
> through our VoIP provider. I have two external modems connected to 
> analogue ports on our PBX, both are used by Hylafax to receive 
> incoming faxes. The software works exceptionally well in converting 
> and dispatching messages, however, we have a lot of trouble receiving 
> faxes.
>
> The two modems are:
>
> MODEM ROCKWELL RC288DPi/V3.210-V90_2M_DLS and MODEM USR U.S. Robotics 
> Sportster Flash 56000 Rev. 10.1.31
>
> Both modems appear to have recurring problems including (in order or 
> popularity):
>
>  * "T.30 T2 timeout, expected signal not received"
>  * "Failed to properly detect high-speed data carrier."
>  * "Failure to receive silence."
>  * "T.30 T2 timeout, expected page not received"
>  * "COMREC invalid response received (expected PPS)"
>
> But most worryingly, some of our customers report that they are unable 
> to connect to us at all, receiving "COMM. ERROR" and such messages on 
> their fax machines.
>
> Our provider suggests that we should provision analogue PSTN lines for 
> faxing because fax via VoIP is never safe and rarely works well in 
> their experience, but others in the business aren't satisfied with 
> this answer.
>
> Does anyone on the list have experience in this area? Should I 
> definitely be looking at the VoIP link as the most likely culprit? Or 
> somewhere else?
>
> Regards,

--

Representing Ecco Pacific and CCG Cable Terminations
PH: 0418 512 510
FX: 03 9827 7028
EM: daniel.hillhouse@xxxxxxxxxxxxxxxx


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