Panasonic KX-TDA100 installation manual External Modem Connection, Installation Manual

3.2 Connection

External Modem Connection

Modem

To RS-232C port (25-pin)

To trunk/Hybrid IP-PBX extension port assigned as the trunk destination

External Modem

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

RS-232C Port (9-pin)

Hybrid IP-PBX

Pin No. Signal Name

2RD (RXD)

3SD (TXD)

4ER (DTR)

6DR (DSR)

After connecting the Hybrid IP-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.

Notes

•Use an RS-232C straight cable for connection between the Hybrid IP-PBX and external modem.

•An AT command (for initialisation, enabling automatic answer, etc.) can only be programmed by KX-TDA Maintenance Console. "AT&F0Q0E0V1S0=1X0&D0" is stored as the default value.

•For more information about the AT command, refer to the external modem's instructions.

214 Installation Manual