Panasonic KX-TD816 Features Manual page 121

• The connection chart for the external modem (25-pin) is as follows:
Serial Interface (RS-232C)
port on the system
Signal
Name
SD (TXD)
RD (RXD)
CS (CTS)
ER (DTR)
• Serial Interface (RS-232C) parameters of the serial interface/remote programming software
should be the same as the PBX. When you use 9600 BPS, we recommend the combination
of "8" Word Length, "None" Parity and "1" Stop Bit.
• An AT Command (for initialization, enabling Automatic Answer, etc.) can only be
programmed by serial interface/remote programming software. The default is
"ATQ0E0V1S0=1X0&D0".
• For more information about the AT Command, please refer to the modem instructions.
Programming Guide References
• [100] Flexible Numbering
• [806-807] Serial Interface (RS-232C) Parameters
Features Guide References
• System Programming and Diagnosis with Personal Computer
User Manual References
• 4.3.46 External Modem Control [PT only]
Features Guide
Serial Interface (RS-232C)
port on the modem
Pin Pin
No. No.
2 2 RD (RXD)
3 3 SD (TXD)
5 5
ER (DTR)
20 20
Signal
Name
CS (CTS)
General Features
121