OT: Hylafax & digital DID

[Joe Chasan]

On Mon, Aug 09, 2004 at 10:49:00AM -0500, Bill Akers wrote:
> Joe Chasan wrote:
> > vsifax project to setup DID via the digital DID that comes with T-1
> > dead.  appears more a multitech issue than a vsi one, but unfortunately
> > no supported modems around that do DID in this format for vsi.
> > 
> > i know a bunch on this list use hylafax - anyone with DID experience
> > with hylafax please contact me off-list, am trying to decide whether
> > to scrap vsifax for this project and put hylafax in.   if i go that
> > route, need recommendation for modem.
> 
> If you use digital to analog converters on your phone system for the 
> modem lines the Multitech modems work fine. Have been doing that for 3 
> years or so with no problems using a couple of old MT 1432BA's that were 
> lying around surplus here. We have T-1 and DID. Using also an old 
> Windows 98 box for faxing that was lying around surplus. I am just 
> saying that T-1 and DID are not at all difficult to manage and if you 
> use d-a converters it removes the software drivers from the loop.

what digital to analog converters are you referring to?  from what
i've learned, there are big differences in the way they work - the
multitech's expect, as analog DID, to provide voltage to line,
something around 48V, whereas in digital, the CO provides the voltage.
Is this some specialty converter?

i know i can plug an single line phone in and make it ring on demand,
but i don't think the DID DTMF would get passed through in such a
situation. 

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-Joe Chasan-                      Magnatech Business Systems, Inc.
joe at magnatechonline.com           Hicksville, NY - USA
http://www.MagnatechOnline.com    Tel.(516) 931-4444/Fax.(516) 931-1264