Re: [hylafax-users] Question on new HylaFAX setup

[Lee Howard <faxguy@xxxxxxxxxxxxxxxx>]

Michael Bradshaw wrote:

> Hello,
>     I'm just looking to get started with an implementation of HylaFAX, 
> as other software solutions to send our incoming faxes to email are 
> very expensive.  We have a voice T1 and I'm thinking of a couple of 
> different possible implementations.  As I understand it from the 
> documentation, I need a separate modem for each line.  What I'm 
> thinking is setting up a couple of servers with a number of modems in 
> each, getting a block of DID's from our T1, having our phone system 
> split them out into separate lines and plugging each one into a 
> modem.  Then having HylaFAX receive faxes on each and send them to 
> specific email addresses from each line.  Would this be a workable 
> solution?


This would work, but it seems a very costly approach, possibly exceeding 
the cost of a T1 fax modem.

If your voice PBX doesn't interfere with fax signalling and is capable, 
then you have a number of options:

Send analog DID to a few analog DID modems.  This would require 
MT5634ZBA-DIDs and a PBX that supports analog DID signalling.

You can also "simulate" DID without using DID a few different ways.

For example, if the number of inbound DIDs is low enough (less than 5) 
you can use "distinctive ring" for DID simulation (assuming that your 
PBX can deliver distinctive ring).  Your modem would need to support 
distinctive ring.

Otherwise, if your PBX supports it, you could convert the DID into a 
Caller*ID signal instead (this, of course, won't work easily if you need 
both Caller*ID and DID).  Your modem would need to support Caller*ID.

Also, if your PBX supports it, you could have it deliver the DID digits 
via DTMF after the receiver goes off hook.  HylaFAX can tell the modem 
to go off-hook, listen for DTMF for DID digits, and then "answer" (CED 
tones) when enough digits are received.  This requires that your modem 
support DTMF, which is usually a voice feature (AT+FCLASS=8).

So these last ways, if you only ever expect to receive 5 simultaneous 
faxes, you only need to purchase 5 modems rather than one modem per fax DID.

Lee.


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