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

[Lucas Barbuto <lucas@xxxxxxxxxx>]

On 7/3/06 1:49 AM, Ivan Petrov wrote:
> I can confirm. I am sending/receiving a lot of faxes using VoIP lines 
> and hylafax. Good to bad ratio isn't that bad ones at all.

Thanks for keeping this discussion going a bit, interesting stuff. I can 
confirm that my provider uses lossless codecs only, they prefer 
G711-alaw (I'm in Melbourne, Australia btw). Our bandwidth is not 
saturated, in theory we have more than enough bandwidth to handle the 
maximum number of calls our PBX can handle.

The success to failure ratio receiving faxes is pretty well in favour of 
success, especially if you include cases where only a small, 
insignificant part of the fax isn't received (e.g. the transmission 
times out after most of the data has already arrived).

The worrying part is that particular customers can never connect and 
it's important to the business that they are able to. It's not 
acceptable to us that we lose any faxes at all. It's difficult to gather 
information about the connection at the customer's end so I can't really 
identify likely culprits at the customer site.

Having said all this, sending outgoing faxes through VoIP (via a regular 
fax machine) is no problem. The virtual PRI is very reliable, just not 
quite reliable enough for inbound fax in some cases.

In any case, the phone company are coming tomorrow to install some 
copper wire for me.

Thanks again,

--
Lucas

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