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Re: [hylafax-users] Anyone using voice and fax on the same line



On 2005.02.17 11:25 Darrick Hartman wrote:
I'm wondering if anyone out there is using fax and voice on the same line. In the past, I've used mgetty+sendfax and vgetty to accomplish this, but the facilities for receiving faxes with mgetty are no where's near as complete as they are with hylafax. I'm thinking that since a majority of the calls would be voice calls, that I should have vgetty handling most of the work and somehow hand off to faxgetty, but I've not found specific info on how to accomplish that.

Please note that I did search the list and found several mentions of people trying (mostly unsuccessfully) to get faxgetty to hand off the calls to vgetty.

You probably are accustomed to "adaptive answer", which tells the modem to answer the call and then try to deduce whether or not the call is a fax call, data call, or voice call. HylaFAX faxgetty would then take that deduction and pass the call on to whatever the appropriate getty was.


Adaptive answer is problematic, though, by nature, and it can cause you to have missed faxes and such.

HylaFAX can be configured to do this, however. There are people that have done it, but I'm not one of them.

What you *probably* should do, however, is to get "distinctive ring" from your local telco provider. That will give you different numbers for your fax and voice calls, and the line will ring with a particular cadence depending on the number the caller dialed. Modems that support distinctive ring can detect this cadence and tell HylaFAX which it is, *without answering the call*, and HylaFAX can then hand off the call to vgetty or whatever. This method avoids the pitfalls of adaptive answering.

Lee.

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