I have picked up a data-voice multiplexer in a surplus store.
It is a Siemens SA820R. According to the user guide it can be used
for transparent data communication over a phone line with an
other unit installed in the "central office". It uses "time
compression and digital baseband modulation techniques with
forward acting error correction". The DTE/Network interface
is "CCITT V.24/V.28; EIA RS-232-C standard". I have hooked it up
to my computer, and it works in the local analog loopback test mode.
I would like to know if it can be used for communication with other
regular modems, or only with another special anymal like this?
My initial guess is that it would work only with another multiplexer,
but I would like to hear others' opinion. Has anyone used
data-voice multiplexers, has anyone seen this Siemens unit?
Thanks, Peter Orban
435 Ellice Av. Winnipeg, MB. | Phone: 204/983-0670
Canada, R3B 1Y6 | Fax: 204/983-3154