Open Source PBX software

http://www.asterisk.org, or http://www.voip-info.org/tiki-index.php?page=Asterisk

Asterisk (NOT Asterix) is a complete PBX in software for Linux. Works with a variety of Voice Over IP protocols, analog hardware, and so on.

Wim gave an introductory presentation of Asterisk at the June 2004 meeting of the FVLUG. Presentation is available at: http://www.nyetwork.org/fvlug/FVLUG%20-%20Asterisk.htm

Features it supports: http://www.asterisk.org/index.php?menu=features

Documentation from Digium, the sponsers of Asterisk: http://www.digium.com/index.php?menu=documentation

Draft handbook, a recommended read when you're getting up to speed: http://www.digium.com/handbook-draft.pdf

Documentation Project: http://www.asteriskdocs.org/

Open Source g.729 codec: http://www.readytechnology.co.uk/open/ipp-codecs-g729-g723.1/

Links to Debian packages: http://www.voip-info.org/wiki-Asterisk+DEB

Some useful notes on using the Asterisk Debian packages: http://www.marlow.dk/?target=asterisk. I required these fixes with the Asterisk 0.7.x packages. The 0.9.x package in Debian unstable may be fine on its own.

Asterisk free bootable CD files by xorcom: http://www.xorcom.com

Some really good text to speech software: http://www.cepstral.com

Bunch of Asterisk/VOIP links: http://bookmarks.freestone.net/read/index.php?name=cramer&id=0000053#A53

Unofficial PBX Integration guide: http://megaglobal.net/docs/asterisk/html/

Perl modules: http://asterisk.gnuinter.net/

Fun with Perl: http://community.moertel.com/ss/space/Talk+-+Fun+with+Asterisk+and+Perl

Getting started: http://www.automated.it/guidetoasterisk.htm

Oreilly OnLamp article on Asterisk/VOIP: http://www.onlamp.com/pub/a/onlamp/2003/07/03/asterisk.html

Setting up IVR (Interactive Voice Response): http://users.pandora.be/Asterisk-PBX/IVR.htm

AGI documentation (slightly out of date but quite accurate): http://home.cogeco.ca/~camstuff/agi.html

Asterisk without VOIP: http://voip-info.org/wiki-Asterisk+setup+success+2

two-way telephone interaction using DTMF: http://www.webreference.com/perl/tutorial/15/

CiscoVOIP - voip with Cisco

Follow Me: http://www.voip-info.org/wiki-Asterisk+Tips+follow+me

Trixbox

Elastix ^?

IAX Trunking

Connecting two servers: http://www.voip-info.org/wiki-Asterisk+-+dual+servers

Faxing

How to set up FAX -> TIFF conversion: http://lists.digium.com/pipermail/asterisk-users/2003-October/025094.html

spandsp, plugins for asterisk for fax signalling

But spandsp is a pain to install: http://www.mail-archive.com/asterisk-users@lists.digium.com/msg48703.html Not any longer use Asterisk At Home which includes spandsp.

Can I fax reliably through a VoIP channel? http://www.opencall.org/faq/x29.html

Is fax obsolete? http://lists.digium.com/pipermail/asterisk-users/2004-June/050505.html

You can try AsterFax http://asterfax.sourceforge.net

1 February 2006 AsterFax verision 1.0 beta 7 released http://asterfax.sourceforge.net/AsterFax%20News.html

Example configuration files

Asterisk GUIs

Flash Operator Panel: http://www.asternic.org/

Quadra Software has developed several Receptionist programs: http://www.quadrasoftware.com

Music On Hold

If you want to enable Music On Hold, you can't use Debian's mpg123 package. Doing an 'apt-get install mpg123' will actually install mpg321 instead. So, you'll need to remove mpg321 and instead compile mpg123 from source, do a 'make install', then symlink /usr/local/bin/mpg123 to /usr/bin/mpg123 so that Asterisk can find it.

Dealing with Echo