Panasonic KX-TDE100 installation manual External Modem Connection, Rd Rxd Sd Txd Er Dtr Dr Dsr

4.2 PC Connection

IMPORTANT

To protect the system, keep the following in mind:

1.Make sure that both connector cases (frame ground) of the RS-232C cross cable (shielded cable) are conductive. If they are not conductive, make sure that both connector cases of the cable are firmly connected.

2.If this is not possible, connect the frame of the PBX to the frame of the PC using an earthing wire in order to prevent difference in the electrical potentials.

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	Pin No.
RD (RXD)	3
SD (TXD)	2
ER (DTR)	20
DR (DSR)	6

RS-232C Port (9-pin)

PBX (9-pin)

Pin No. Signal Name

2 RD (RXD)

3SD (TXD)

4ER (DTR)

6 DR (DSR)

IMPORTANT

To protect the system, keep the following in mind:

1.Make sure that both connector cases (frame ground) of the RS-232C straight cable (shielded cable) are conductive. If they are not conductive, make sure that both connector cases of the cable are firmly connected.

2.If this is not possible, connect the frame of the PBX to the frame of the external modem using an earthing wire in order to prevent difference in the electrical potentials.

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:

230 Installation Manual