Ztalk, TCP/IP Voice Communication
Ztalk is a low-bandwidth, voice communication tool for tcp/ip networks. Its
a fully functional, voice-messaging system that is perfect for low-bandwidth
systems, such as SLIP, PPP or 56kbs links. Ztalk currently supports the
SunOS, Linux, Irix and Freebsd operating systems. (A NeXT version is in the works
as soon as it's converted to use the dsp audio).
The Ztalk protocol can be compared to CB-radio broadcasting, where one user records his
message and send it to the designated recipients, who spool the message and
play it through their audio devices.
Ztalk, and it's X11 client Xztalk, offer these
- 8-bit quality audio
- Voice-mail spooling and playback
- Audio file (Sun audio format) transmitting
- Gsm-based compression
- SunOS, Linux and Irix support
- Background compression and transmission*
- Low-bandwidth consumption (9600-28.8k/s)
- TERM-protocol support
* Xztalk only
The 'Z' in Ztalk means the audio files are compressed for transmission, to
conserve bandwidth. Xztalk allows background compression and transmission for
even faster message-to-message performance.
Ztalk is available for anonymous FTP from these sites:
The Ztalk-FAQ is available here.
Ztalk was developed by an international team of developers on various
operating systems, primarily SunOS, Linux and Irix. Ztalk is a two-part software
package, the client and the daemon, ztalkd, which must be installed on
the recipient's system. The ztalkd daemon must be installed by root to operate
from the system 'inetd' daemon, and binds to port 5109 of the system.
Without these people, Ztalk would never be a reality:
- Michaela Merz (misch), and the Free Software Associate of Germany for inspiration (mtalk)
- Scott Doty (creon), for a majority of the Ztalk code
- Alex Brown (OKI) and Albion, for TERM support
- Andy Burnett (TimeBomb), for help with Xztalk actually working
- Simon Ferrett (Mcv), for ircII+tv, the irc client with ztalk support
- All the people on #linux for testing it
Liem Bahneman firstname.lastname@example.org