GE Multilin D400 Instruction Manual page 68

To connect a modem
to the COM2 Port
Adapter
68
The COM2 port provides a single DB-9 connector wired for an RS-574 DTE signal. The COM2
Port Adapter plugs into any NET slot (slots 11 and 12) of the D400. The Redundant TP
Ethernet + COM2 Port Adapter plugs into the NET1 slot (slot 11).
The COM2 Port requires an external modem to provide dial-up functionality.
See "COM2 port adapter" on page 51 for more information.
Connect a straight-through modem cable (not supplied with the D400) to the modem and
the D400 COM2 port. Connect using the settings provided below.
Modem Settings:
• Baud rate: 38400 bps
• Data bits: 8
• Parity: Disabled
• Stop bit: 1
Figure 40: Modem to COM2 port 2 adapter
6 1
9 5
Table 21: COM2 Port DB-9 Connector Signal Definitions
Pin Number DTE
Signal Acronym
1 DCD
2 RXD
3 TXD
4 DTR
5 Signal GND
6 DSR
7 RTS
8 CTS
9 Not connected
Table 22: COM2 Port DB-9 to DB-25 Pin Out
Signal Acronym
TD
RD
GE INFORMATION
CHAPTER 4: CONNECTING TO DEVICES AND NETWORKS
1 14
2
3
4
5
6
7
20
22
13 25
Signal Flow
IN from DCE
IN from DCE
OUT to DCE
OUT to DCE
-
IN from DCE
OUT to DCE
IN from DCE
-
DB-9 Pin #
2
3
D400 SUBSTATION GATEWAY INSTRUCTION MANUAL
Modem
DB-25 Pin #
3
2