12
12
3.5
3.5
COMPOSITE PORT CABLING
COMPOSITE PORT CABLING
The composite ports of multiple Telplex units are connected together via
external modems (
Section 3.5.1
) or cable (
Section 3.5.2
).
3.5.1
3.5.1
MODEM CONNECTION
MODEM CONNECTION
See
Section 3.5.1.1
if connecting a modem to a TX104 or TX108 or
Section 3.5.1.2
if connecting a modem to a TX102.
3.5.1.1
3.5.1.1
TX104/TX108 MODEM CONNECTION
TX104/TX108 MODEM CONNECTION
If an external modem will be used to connect a local TX104 or TX108 to
a remote Telplex, the modem should be connected to the
COMPOSITE
EIA-232
port on the back panel of the unit (see
Appendix B
). The
TX104 or TX108 should be programmed to operate with a Line Type of
Modem (see
Section 5.8
).
The standard configuration of the
COMPOSITE EIA-232
port is DTE
(Data Terminal Equipment) with a DB-25 male connector which uses the
following signals for communication:
TX104 AND TX108 EIA-232 COMPOSITE PORT PIN/SIGNAL DEFINITION
Pin
Signal
(EIA-232)
Direction
Description
1
PGND
---
Protective Ground
2
TX
Output
Data Out
3
RX
Input
Data In
4
RTS
Output
+12 volts when Telplex is powered up
5
CTS
Input
Transmit enabled when +12 volts. Enabled if no
connection.
7
SGND
---
Signal Ground
8
DCD
Input
Data Carrier Detect. Controlled by modem.
20
DTR
Output
+12 Volts
Summary of Contents for Telplex TX102
Page 24: ...18 20 DTR Input Data Terminal Ready Enable disable the receiving of characters ...
Page 41: ...35 Self test passed ...
Page 55: ...49 Press any Key to continue ...
Page 58: ...52 Set Stop Bits 4 Set RTS DSR Pass Through 8 Enter Request ...
Page 72: ...66 Figure 9 ...
Page 99: ...NOTES NOTES ...
