Owner`s manual

29
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In MUX mode, the local Telplex is connected to a remote unit via the
composite link and respective terminal devices are able to
communicate back and forth. Data received on a local terminal port is
transmitted to the designated remote terminal port and vice versa.
MUX mode is accessed in a number of ways depending on the Line
Type you are using (Modem or Direct).
When using Modem Line Type, the Telplex will go into MUX mode
when the composite port receives a low to high transition (negative to
positive voltage) on the DCD line or a CONNECT message from the
modem. The Telplex will also go into MUX mode when instructed to
do so manually if there is an existing communication link with the
remote site. An active terminal connected to a multi-drop unit may
instruct the Telplex to go to MUX mode by typing "3" from the System
menu. An active terminal connected to a standard unit may instruct
the Telplex to go to MUX mode by typing Control-C from the Local
Mode menu. The Telplex will stay in MUX mode until the carrier (DCD
or phone line) drops out. MUX mode will also be terminated when a
local terminal instructs the Telplex to go into Local or Remote Unit
Configuration or Diagnostics mode.
If using Direct Line Type, the local Telplex will go into MUX mode
automatically upon power-up once the local composite port
recognizes a connection with the designated remote Telplex. The
Telplex will also go into MUX mode when the active terminal instructs
the Telplex to go into MUX mode manually from the System Menu for
multi-drop units or from the Local Mode menu for standard units as
described in the previous paragraph (assuming there is an existing
communication link with the remote site). The Telplex will stay in
MUX mode until the Escape Code Sequence is received by a local
terminal with Local Access enabled.