[Asterisk-Users] TDM400 cards and modem/fax devices

[Chris Bagnall]

Hi all,

Having read the various fax and asterisk pages on voip-info, am I right in
thinking I should be able to bridge Zap channels carrying fax without
reliability problems (which as I understand things plague Fax-over-IP)?

The reason for asking is in relation to a requirement where both fax and an
antiquated EPOS system need use of an analogue line - the fax for both
sending and receiving, the EPOS purely for dialling out to shops. The site
has 2 analogue lines for this purpose, each with different numbers, both of
which are listed as fax numbers for the 2 companies in question. Fax volume
is low, so 2 separate fax machines would be uneconomical.

Would it be feasible to feed the 2 analogue lines into a TDM400 on FXO
modules, then connect the EPOS and fax to FXS modules on the same card? I
assume it'd then be possible to route all incoming calls on either line to
the fax machine, and allow the EPOS system to dial out using whichever line
it chooses.

Questions:
1) Would this approach be sufficiently reliable to ensure faxes weren't
lost?
2) Is there a simpler way of accomplishing this without complicating things
with the telephone company?

Regards,

Chris
-- 
C.M. Bagnall, Director, Minotaur I.T. Limited
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