Connecting cables
91
SmartNode 1000 and 2000 Series Getting Started Guide
6 • SmartNode 2300 installation
Figure 59. Connecting to a hub
Installing the serial interface cable
Serial devices (V.35 or X.21) are connected to the SmartNode’s serial ports (see
table 28
for port pin-out
listing) via a cable terminated at the SmartNode 2300 with a DB-25 connector.
Table 28. Serial port V.35 and X.21 signals
Signal V.35
Signal X.21
Pin
Description
Pin
Description
1
Frame Ground
7
Signal Ground
4
DCD
9
RXDa
6
DTR
10
RXDb
7
Signal Ground
11
TXDb
8
RTS
12
TXDa
9
RXDa
13
CNTb
10
RXDb
14
CNTa
11
TXDb
16
INDb
12
TXDa
21
SETb
16
TXCb
22
SETa
21
RXCb
23
INDa
22
RXCa
23
TXCa
25
CTS
Hub
Straight-through cable
RJ-45, male
Rx+
Tx-
Tx-
Rx-
3
4
5
6
RJ-45, male
3
4
5
6
SLOT
2
SLOT
3
SLOT
1