Panasonic KX-TDE100 Installation Manual page 230

4.2 PC Connection
CAUTION
Use an RS-232C cross cable (shielded cable) for connection between the PBX and PC.
Make sure to connect both the PBX and the PC to earth.
Note
For pin assignments and maximum cabling distance, refer to "3.12.1 Connection of Peripherals".
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)
After connecting the PBX and the external modem, set the power switch of the external modem to "ON",
then the external modem will be initialised with the default values.
The following AT command settings may be required for the modem:
• The Data Terminal Ready (DTR) signal should be ignored.
• The Data Terminal Equipment (DTE)/Modem flow control should be turned off.
• Data compression should be disabled.
• Error Correction is not necessary.
CAUTION
Use an RS-232C straight cable (shielded cable) for connection between the PBX and external modem.
Notes
• An AT command (for initialisation, enabling automatic answer, etc.) can only be programmed by
KX-TDE Maintenance Console. "AT&F" is stored as the default value.
• For more information about the AT command, refer to the external modem's instructions.
230 Installation Manual
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)