Panasonic KX- TAW848, Installation Manual

Page: 104 / 137

3.2 Connection
104 Installation Manual
External Modem Connection
After connecting the PBX and the external modem, set the power switch of the external modem
to "ON", then the external modem will be initialized 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.
• The data compression should be disabled.
• Error Correction is not necessary.
Notes
• Use an RS-232C straight cable for connection between the PBX and external modem.
• An AT command (for initialization, enabling automatic answer, etc.) can only be
programmed by KX-TAW848 Maintenance Console. "AT&F0E0V1X1S10=30S12=50"
is stored as the default value.
• For more information about the AT command, refer to the external modem's
instructions.
To CO line/PBX extension
port assigned as the CO line destination
Modem
To RS-232C port
(25-pin)
External Modem PBX
Signal Name Pin No. Signal Name
SD (TXD) 2
RD (RXD) 3
DR (DSR) 6
ER (DTR) 20
2 RD (RXD)
3 SD (TXD)
4 ER (DTR)
6 DR (DSR)
Pin No.
RS-232C Port
(9 pin)