Frequently asked questions about spandsp


Steve Underwood

documentation in progress

This document can be freely redistributed according to the terms of the GNU General Public License.

Table of Contents

What is spandsp?
What is the difference between HylaFAX and spandsp?
Can I FAX reliably through a VoIP channel?
spandsp's FAX machine only works up to V.17/14400bps. Isn't that a bit limiting?
Should I use echo cancellation for FAX?
Can spandsp's FAX machine work with packages such as HylaFAX?
FAXing with spandsp keeps giving me core dumps. Its crap, isn't it?
I keep getting pages cut short. Fix this heap of rubbish or I will sue!
Quick answer
Somewhat fuller answer
Can you fix the bug the makes FAX pages look an odd shape when I see them on my computer.
Can spandsp send a header on each page of a FAX, like most FAX machines do?
Can you provide the text in the FAX headers as output from spandsp when receiving a FAX?
If I take random versions of different software packages and plug them together, they either don't compile or don't run properly.
Where can I find DTMF test data?
How can I generate a FAX compatible multi-page TIFF file from a PDF file?

Frequently asked questions about spandsp

What is spandsp?

spandsp is a library which provides many of the DSP functions needed for telephony. It is designed to be independent of the telephony platform itself.