Pin Assignments - Panasonic KX-TAW848 Installation Manual

2.9 Connection of Peripherals
Pager
Only 1 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
6 9
Connection Charts
For connecting a printer/PC with a 9-pin RS-232C connector
Circuit Type
(EIA)
BB
BA
CD
AB
CC
CA
CB
94 Installation Manual
No. Signal Name
2 RD (RXD)
5
3 SD (TXD)
4 ER (DTR)
5 SG
6 DR (DSR)
7 RS (RTS)
8 CS (CTS)
PBX
Signal
Pin No.
Name
RD (RXD) 2
SD (TXD) 3
ER (DTR) 4
SG 5
DR (DSR) 6
RS (RTS) 7
CS (CTS) 8
Function
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request To Send
Clear To Send
Pin No.
2
3
4
5
6
7
8
Circuit Type
EIA CCITT
BB 104
BA 103
CD 108.2
AB 102
CC 107
CA 105
CB 106
Printer/PC
Signal Circuit Type
Name (EIA)
RD (RXD) BB
SD (TXD) BA
ER (DTR) CD
SG AB
DR (DSR) CC
RS (RTS) CA
CS (CTS) CB