Juniper Networks ERX Hardware 8 - Manual (Page 164)

ERX 8.0.x Hardware Guide
Table 21: DB-9—RJ-45 Crossover Adapter Pinout
DB-9 Pin Signal RJ-45 Pin
1 DCD 1
2 RXD 3
3 TXD 2
4 DTR 6
5 GND 5
6 DSR 4
7 RTS 8
8 CTS 7
9 RNG no connect
Table 22 lists the pinout for the straight-through adapter.
Table 22: DB-9—RJ-45 Straight-Through Adapter Pinout
DB-9 Pin
RS-232 Signal
Name
RJ-45 Pin
Ethernet Signal
Name
1 DCD 1 TX +
2 RXD 2 TX –
3 TXD 3 RX +
4 DTR 4 no connect
5 GND (signal) 5 no connect
6 DSR 6 RX –
7 RTS 7 no connect
8 CTS 8 no connect
9 RNG no connect none
CT1 and CE1 I/O Modules
CT1 I/O modules have 24 RJ-48C female connectors. CE1 I/O modules have either
20 RJ-48C female connectors or two 25-pair female Telco connectors. Figure 54
shows the location of the ports on a CT1 I/O module and the sequence of the pins
in the RJ-48C connector. CE1 I/O modules equipped with RJ-48C connectors have
the same configuration as CT1 I/O modules equipped with RJ-48C connectors.
146 CT1 and CE1 I/O Modules