Ports; M320 Fast Ethernet 48-Port Cable Pinouts; Figure 114: Fast Ethernet 48-Port Pic; Figure 115: Vhdci To Rj-21 Cable - Juniper M320 Hardware Manual

M320 Fast Ethernet 48-port Cable Pinouts

Table 42: RJ-21 Pin Assignments

Ethernet Port Numbers
0, 12, 24, 36
1, 13, 25, 37
2, 14, 26, 38
3, 15, 27, 39
4, 16, 28, 40
Copyright © 2010, Juniper Networks, Inc.
The Fast Ethernet 48-port PIC has four VHDCI connector ports on its faceplate (see
Figure 114 on page 271), each of which accepts one of the four RJ-21 cables supplied with
the PIC (see Figure 115 on page 271). Each VHDCI connector port supports 12 Ethernet

ports.

Figure 114: Fast Ethernet 48-port PIC

Figure 115: VHDCI to RJ-21 Cable

NOTE: RJ-21 pin numbers 25 and 50 do not appear in the table because they
are ground connectors.
RJ-21 Pin Assignment
TX -
2
4
6
8
10
Appendix F: M320 Router Cable Connector Pinouts
TX + RX -
27 1
29 3
31 5
33 7
35 9
RX +
26
28
30
32
34
271