Connecting To Modems - Digi PortServer II User Manual

Connecting to modems

You can connect a modem to any available serial port on PortServer II.
1. Obtain a suitable cable to connect the modem to the serial port on PortServer II.
Most modems require a 10-pin cable; we suggest you obtain one of Digi Interna-
tional's RJ-45 to DB-25 straight-through cables:
Table 2
24 Inch Cables
48 Inch Cables
This cable type is illustrated below:
RJ-45 (10 pin)
Gnd
TxD
RxD
RTS
CTS
DSR
Signal Gnd
DCD
DTR
RI
Note: Any cable you construct or obtain must be shielded to comply with FCC certi-
fication requirements. The shield must be connected to Chassis Ground
(GND) at one end of the cable.
90030500B
Available Cables
DB-25 Male
61020024
61020048
-
5
6
3
8
2
7
10
9
1
Figure 16 Full 10 Wire Modem cable
DB-25 Female
61030024
61030048
DB-25 Male
Shell Chassis Gnd
2 TxD
3 RxD
4 RTS
5 CTS
6 DSR
7 Signal Gnd
8 DCD
20 DTR
22 RI
Installation
DB-9 Male
61070024
N/A
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