Panasonic KX-TDA30 Installation Manual page 223

For connecting a printer/PC with a 25-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)
RS-232C Signals
•
Receive Data (RXD):...(input)
Conveys signals from the printer or the PC.
•
Transmit Data (TXD):...(output)
Conveys signals from the unit to the printer or the PC. A "Mark" condition is held unless data or BREAK
signals are being transmitted.
•
Data Terminal Ready (DTR):...(output)
This signal line is turned ON by the unit to indicate that it is ON LINE. Circuit ER (DTR) ON does not indicate
that communication has been established with the printer or the PC. It is switched OFF when the unit is
OFF LINE.
•
Signal Ground (SG)
Connects to the DC ground of the unit for all interface signals.
•
Data Set Ready (DSR):...(input)
An ON condition of circuit DR (DSR) indicates the printer or the PC is ready. Circuit DR (DSR) ON does
not indicate that communication has been established with the printer or the PC.
•
Request To Send (RTS):...(output)
This lead is held ON whenever DR (DSR) is ON.
•
Clear To Send (CTS):...(input)
An ON condition of circuit CS (CTS) indicates that the printer or the PC is ready to receive data from the
unit. The unit does not attempt to transfer data or receive data when circuit CS (CTS) is OFF.
•
Frame Ground (FG)
Connects to the unit frame and the earth ground conductor of the AC power cord.
PC/CTI Server (via USB version 2.0)
The PBX is equipped with a USB interface. This interface provides communication between the PBX and a
PC or a CTI server.
The PC is used for system programming, diagnostics and external system database storage (save/load)
functions.
The CTI server is used for connecting PCs on a LAN to provide third party call control CTI. The CTI connection
uses the CSTA Phase 3 or TAPI 2.1 protocol.
Note
The operating system of the PC or CTI server required for third party call control depends on your CTI
application software. For details, refer to the manual for your CTI application software.
Pin No.
2
3
4
5
6
7
8
2.11.1 Connection of Peripherals
Printer/PC (25-pin)
Signal
Pin No.
Name
1 FG
3 RD (RXD)
2 SD (TXD)
20 ER (DTR)
7 SG
5 CS (CTS)
6 DR (DSR)
4 RS (RTS)
Circuit Type
(EIA)
AA
BB
BA
CD
AB
CB
CC
CF
Installation Manual 223