--- In [email protected], "tcstoodt" <timstoodt@...> wrote:
> Would an old bisync modem connection to a van still work if the phone
> line it was using was switched from a landline to an IP phone?
> Has anyone done this?
This typically does not work. Most of the VoIP lines use codecs which do not
work well with the modulation of modems.
You typically experience the first problem with fax machines which do not work
anymore. And those are also low baud-rate. So dont expect bisync modems to
work, cause the timing of those A/D converters and codecs are not at all
useable by modems. There are some VoIP routers which can recognize fax, they
will turn off all echo cancelation, use a non-compressing codec (like G.711)
and reduce the jitter buffers. You might be able to configure that on your VoIP
Servers but dont expect it to be enough.
What bisync connection is that? I cannot imagine any partner who will not
applaud if you propose to switch.
Gruss
Bernd
BTW: there is support for Fax over VoIP (T.38, which receives digital
datastreams, but I think this is only working with Fax data not general digital
streams).
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