On Jan 21, 2010, at 12:48 PM, Boris shtrasman wrote:
Just a question (Since I truly don't know enough about the
subject ) -
How does it work ? since afaik there are bandwidth issues .
(plus the charge started after the sync) - so using VoIP may be
problematic at best.
To oversimplify it, fax uses a simple I send you a data packet and you
send me an ack protocol. It's designed for sending data over a POTS
line, without a lot of tollerance for dropped, late or mangled
packets. The latest standard, which is still changing, T-38 allows for
faxes to be sent over VoIP, but it is not (yet) reliable.
The other problem is that fax machines need to have the ability to
accept the problems of faxing over VoIP, such as late acks, etc. Most
don't.
From what I have seen the much more reliable fax over TCP nor the
relaxed timing and robustness options do not exist in generally
available (ok, cheap) fax machines, instead they have a "fax over
email" or "scan and email" button, and include support for it in
their Windows drivers.
Geoff.
--
geoffrey mendelson N3OWJ/4X1GM
Jerusalem Israel geoffreymendel...@gmail.com
New word I coined 12/13/09, "Sub-Wikipedia" adj, describing knowledge
or understanding, as in he has a sub-wikipedia understanding of the
situation. i.e possessing less facts or information than can be found
in the Wikipedia.
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