Panasonic KX-TDA600 Installation Manual page 310

3.2.1 PC Connection
LAN Connection via CTI-LINK Card
PC
Note
For pin assignments and maximum cabling distance, refer to "2.8.8 CTI-LINK Card (KX-TDA0410)".
External Modem Connection
Modem
To RS-232C port (25-pin)
To trunk/PBX extension
port assigned as the trunk destination
External Modem (25-pin)
Signal Name
RD (RXD)
SD (TXD)
ER (DTR)
DR (DSR)
310 Installation Manual
RJ45
Switching Hub
To network port
Pin No.
3
2
20
6
RS-232C Port
(9-pin)
PBX (9-pin)
Pin No. Signal Name
2 RD (RXD)
3 SD (TXD)
4 ER (DTR)
6 DR (DSR)