** Stable Release 3.5 (December 2006) **

  

PBX4Linux is an ISDN PBX based on Linux

PBX4Linux is a real ISDN PBX which interconnects ISDN telephones and ISDN lines. It is possible to connect telephones to a Linux box. It is a pure software solution except for the ISDN cards and telephones. The great benefit is the NT-mode that allows to connect telephones to an ISDN card. Special cards are needed and a little bit of different cabeling. The PBX copyrighted, but open source. It supports lots of features, that only expensive PBXs have.
Voice-over-IP gateway is also included, but for my opinion too buggy and slow. SIP is about to come and a real fast kernel space RTP will be used.

PBX4Linux is open source and under GPL.

View the list of features and read the HOWTO for a quick start.
Check the list of cards that are capable of connecting telephones to it.

Final release V3.5 can be downloaded here - seems quite stable / works with CVS.
For changes check README file inside the source tar.

• Documentation for V2.7 (Word)
• Documentation for V2.7 (PDF)

• Documentation for V3.0 (Word)
• Documentation for V3.0 (PDF)

To be able to run PBX4Linux you will need:

• at least one isdn card that is capable of NT-mode
• a second card in order to connect an external line
• the mISDN driver by Karsten Keil
• the mISDNuser package for kernel link library and NT-mode support
• the OpenH323 package for optional Voice-over-IP support

HFC multiport cards / HFC-E1 cards

• Documentation (DOC)
• Documentation (HTML)

Get additional tone/announcement sets: (only for fun)

• Pinball style sounds
• Relaxing sounds
• At Astrastudio.de there are different hold music files encoded as A-law files.

For more info, write to jolly@eversberg.eu. We also have a mailing list: pbx4linux@koeln.ccc.de Please write a mail with subject "subscribe" to pbx4linux-request@koeln.ccc.de to join. For the archive check out: http://ischtar.koeln.ccc.de/pipermail/pbx4linux/

Visit the download area for latest release.