Panasonic KX-TAW848 Installation Manual page 96

2.9 Connection of Peripherals
Pager
Only one paging device (user-supplied) can be connected to the PBX.
CAUTION
An External Paging Jack is a SELV port and should only be connected to an approved SELV device.
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.
When using special accessories such as cable, the user should use those specified in this installation
manual to comply with the limits for a Class B digital device pursuant to the FCC Rules.
Note
Use an RS-232C cross cable for connection between the PBX and PC.
Pin Assignments
1 5
6 9
Connection Charts
For connecting a printer/PC with a 9-pin RS-232C connector
PBX
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)
96 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
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