Panasonic KX-TDA30 Installation Manual page 222

2.11.1 Connection of Peripherals
CAUTION
An External Paging Jack is an SELV port and should only be connected to an approved SELV device, or
in Australia, via the Line Isolation Unit with the Telecommunications Compliance Label.
PC/Printer (via RS-232C)
The PBX is equipped with an RS-232C interface. This interface provides communication between the PBX
and the user-supplied devices such as PC or line printers. The RS-232C port is used for system programming,
SMDR, diagnostics and external system database storage (save/load) functions.
CAUTION
To protect the system, keep the following in mind:
1.
Make sure that both connector cases (frame ground) of the RS-232C cross cable (shielded cable) are
conductive. If they are not conductive, make sure that both connector cases of the cable are firmly
connected.
2.
If this is not possible, connect the frame of the PBX to the frame of the PC/Printer using an earthing
wire in order to prevent difference in the electrical potentials.
Pin Assignments
1 5
6 9
Connection Charts
For connecting a printer/PC with a 9-pin RS-232C connector
PBX (9-pin)
Circuit Type Signal
(EIA) Name
BB RD (RXD)
BA SD (TXD)
CD ER (DTR)
AB SG
CC DR (DSR)
CA RS (RTS)
CB CS (CTS)
222 Installation Manual
No. Signal Name
2 RD (RXD)
3 SD (TXD)
4 ER (DTR)
5 SG
6 DR (DSR)
7 RS (RTS)
8 CS (CTS)
Pin No.
2
3
4
5
6
7
8
Function
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request To Send
Clear To Send
Printer/PC (9-pin)
Signal
Pin No.
Name
2 RD (RXD)
3 SD (TXD)
4 ER (DTR)
5 SG
6 DR (DSR)
7 RS (RTS)
8 CS (CTS)
Circuit Type
EIA CCITT
BB 104
BA 103
CD 108.2
AB 102
CC 107
CA 105
CB 106
Circuit Type
(EIA)
BB
BA
CD
AB
CC
CA
CB