A short guide on how to use High Definition VoIP on Asterisk and FreePBX.

What is it
HD VoIP in the Asterisk world involves selecting the g722 codec for VoIP calls.  g722 is known as a wideband codec as opposed to g711 which is narrowband.  The nice thing about it is that it does not require any more bandwidth than g711.  Both require 64kbit/s each way for a 2-way conversation.

 Originally written for Ubuntu 6.  Should work on newer versions.

In this document there are various boxes, with text inside them.
These are examples of what you see on your screen, what you should
type, and/or the expected responses. For example:

rob@rob-laptop:~$ id

uid=1000(rob) gid=1000(rob)
groups=4(adm),20(dialout),24(cdrom),25(floppy),
29(audio),30(dip),44(video),46(plugdev),
106(lpadmin),110(scanner),112(admin),1000(rob)

FreePBX-Asterisk install and configure guide using CentOS 5.x, Asterisk 1.4.x, and FreePBX 2.3.x.

For printer friendly version of this guide create an account and login.  It will only take a few seconds.

For printer friendly version of this guide create an account and login.  It will only take a few seconds.