Owner`s manual

Telplex Model TX104M is an asynchronous statistical multiplexer with
built-in modem. Four individual communications channels are
multiplexed into a single dial-up or leased telephone line, cutting phone
line costs to a minimum. The TX104M features a V.22 bis internal
modem which provides reliable communication at speeds up to 4800
bps. With V.42 bis protocol, the TX104M provides error correction and
Classes 2-4 data compression. Compatible with most computers,
printers, or peripherals, the TX104M ensures rapid throughput, and
offers a variety of user-programmable features in order to meet your
specific application requirements.
The BX2448 is a V.22 bis external modem which uses deal-up or
leased telephone lines and comes equipped with many advantageous
features, such as MNP Class 5 data compression, which enables data
transmission at speeds to 4800 bps and, MNP Classes 2 - 4 error
correction. A wide selection of user-programmable features allows you
to customize the modem to your own individual application situation.
500 SERIES MULTIPORT CONTROLLERS
Included in the 500 Series line of multiport controllers are units
intended for the following applications:
Port Expansion (A-Series): Allows a single serial port on a computer
to individually access up to 17 peripheral devices with full duplex
communication.
Single Port Contention (DQ-Series): Allows up to 17 terminals to
contend for a single port on a computer system.
Multiple Port Contention (B-Series): Allows either 6, 8 or 12
terminals to contend for either 3, 4 or 6 computer ports respectively.
Networking (F-Series): Networks either 5 or 9 ports together, i.e.,
allows any port to connect to any other port on the multiport controller.
These also have host port control which allows a host computer system
to make and/or break any connection between two ports on the
multiport controller.