TANDBERG D1320203 用户手册
TANDBERG 3G Gateway
Data port Command Interface User Guide
2.
Connecting to the Data port Command Interface through the RS-232 port.
The RS-232 port is a 9-pin, female, sub-D connector located on the front of the 3G Gateway. The port is
configured as a DCE (Data Communications Equipment). The RS-232 port is default set to 115200 baud, 8
data bits, none parity and 1 stop bit from factory. The RS-232 port is also referred to as the Data port.
configured as a DCE (Data Communications Equipment). The RS-232 port is default set to 115200 baud, 8
data bits, none parity and 1 stop bit from factory. The RS-232 port is also referred to as the Data port.
2.1.
Hardware and Cabling
The pin outs for the RS-232 are defined in the following table (the DTE, Data Terminal Equipment, could be
a PC or other device capable of serial communication).
a PC or other device capable of serial communication).
Pin no
Signal
Description
Direction
1
CD
Carrier detect
To DTE
2 RD
Receive
data
To
DTE
3
TD
Transmit data
From DTE
4
DTR
Data terminal ready
From DTE
5
Ground
6
DSR
Data set ready
To DTE
7
RTS
Ready to send
From DTE
8
CTS
Clear to send
To DTE
9 RI
Ring
indicator
To
DTE
NOTE! A straight through cable should be used between the TANDBERG 3G Gateway’s RS-232 port and
the DTE.
the DTE.
The figure below illustrates the recommended cable-wiring scheme for connecting the 3G Gateway to a PC
through RS-232.
through RS-232.
TANDBERG
3G
G
ATEWAY
PC
DCE, 9 pin
DTE, 9 pin
1 CD
1 CD
2 RD
2 RD
3 TD
3 TD
4 DTR
4 DTR
5 GND
5 GND
6 DSR
6 DSR
7 RTS
7 RTS
8 CTS
8 CTS
9 RI
9 RI
DTR and RTS are ignored. DSR, CD, and CTS are always asserted, while RI is not used.
2.2.
Troubleshooting
D1320203
4