[Asterisk-Dev] HylaFAX and spandsp

[Kevin P. Fleming]

Steve Underwood wrote:

> Now I have a question. What should this look like as a complete 
> application? The current applications which allow use of mu soft-FAX, 
> rxfax and txfax, are transient applications. What form should a soft-FAX 
> modem for HylaFAX take? Should I follow the same transient application 
> format, launching a copy of HylaFAX's faxgetty as needed? If so, what 
> about the FAX sending side. Should I be building a persistent 
> application with a persistent copy of HylaFAX attached? HylaFAX experts, 
> please tell me what will suit HylaFAX best, as I am no HylaFAX expert.

I am no HylaFAX expert, just a satisfied user, but here is my ideal 
soft-FAX application...

I'd like to see a standalone application that I can run on any host I 
like, connect it to an Asterisk server via IAX2 and have HylaFAX's 
faxgetty talk to it (over a pty, I'd assume). If I want to have multiple 
"extensions" supporting soft-FAX, then I'd have to run multiple 
instances of this standalone application, each talking to a separate 
faxgetty and appearing as another modem in HylaFAX's view of the world.

If the soft-FAX application has to run inside Asterisk for performance 
reasons (or whatever else), then I'd still like to see some persistence 
so HylaFAX can be operated "as normal", especially for sending.