home
***
CD-ROM
|
disk
|
FTP
|
other
***
search
/
Source Code 1992 March
/
Source_Code_CD-ROM_Walnut_Creek_March_1992.iso
/
usenet
/
altsrcs
/
2
/
2375
/
README
< prev
next >
Wrap
Text File
|
1990-12-28
|
3KB
|
87 lines
VTALK is a product from OKI Electric Industry, Japan,
that allows voice talk between two Sun Sparcstation's
over Ethernet. Each machine must have microphones connected
to the audio port.
This is a modified version that works for SunOS 4.1.
Vtalk - How to
--------------
How to install:
Copy the file 'vtalk.shar' to the directory where you want to
install it.
Unpack the archive by running through /bin/sh (command: sh vtalk.shar).
This will produce .c and .h files, and a Makefile.
Type 'make'. This will produce the executables
'vtalk' and 'vtalkd'.
If not done earlier, a service must be allocated to vtalkd in the NIS database
and /etc/services.
A service number like 2999 will be suitable. The entry should
look like:
vtalk 2999/tcp
This can only be done by the superuser (root), so you should contact
your system administrator to have this done on your system.
How to run:
Start vtalkd ('vtalkd &') on every machine that you want voice talk to work on.
This could be done at startup in the .login file.
To initiate a connection, type 'vtalk user@machine'. The user on that machine
will be informed of the request. A user accepts a connection by typing 'vtalk'.
Here is some info on how to wire the microphone plug (Swedish version) :
***********************************************************************
I/O Connector:
This is the view looking at the connector end of an adapter cable.
6x 7x 8x
3x 4x 5x
1x 2x
The connections to these pins are as follows:
Pin 1 no connect
Pin 2 no connect
Pin 3 Michrophone (tip)
Pin 4 no connect
Pin 5 no connect
Pin 6 Michrophone (sleeve or shield)
Pin 7 audio out (tip)
Pin 8 audio out (sleeve or shield)
Pin 7 and 8 is only connected if you want to use an external loudspeaker.
A cheap freestyle booster speaker works fine.
My speaker is called 'GALAX PS-388R', made in China and costs 160 Skr,
(appr US$ 28) here in Sweden. I have connected a 12V AC/DC adaptor to it
so batteries are no problem..
NOTE: If you want the external speaker to work with 'vtalk' you might
need to include some code that switches output to the audio jack,
or use the Sun tool 'gaintool' to manually specify speaker output.
Mini-DIN plugs for the SPARC audio connector can be ordered in Sweden
from ELFA, phone 08-7353535,
Article no. 42-193-58
A suitable screened michrophone cable between this plug and a phono jack is
no. 55-801-05, appr 2 metres, or solder the michrophone's own cable
directly to the Mini-DIN plug.
If both external speaker and mike is desired, use a stereo audio cable,
no. 55-807-82, and connect this to some adapter box that
in turn allows connecting both a michrophone and booster speaker.
The choice is yours.
********************************************************************************
Happy talking,
gunnar@falcon10.ericsson.se