Juniper J-series Services Router J2320 Getting Started Manual page 260

J2320, J2350, J4350, and J6350 Services Router Getting Started Guide
Table 81 on page 238 through Table 84 on page 239 describe the RJ-48 connector
pinouts.
Table 81: RJ-48 Connector to RJ-48 Connector (Straight) Pinout
RJ-48 Pin (on T1/E1 PIM)
(Data Numbering Form)
1
2
4
5
3
6
7
8
Table 82: RJ-48 Connector to RJ-48 Connector (Crossover) Pinout
RJ-48 Pin (on T1/E1 PIM)
(Data Numbering Form)
1
2
4
5
3
6
7
8
238
E1 and T1 RJ-48 Cable Pinouts
RJ-48 Pin
(Data Numbering
Form) Signal
1 RX, Ring, –
2 RX, Tip, +
4 TX, Ring, –
5 TX, Tip, +
3 Shield/Return/Ground
6 Shield/Return/Ground
No connect No connect
No connect No connect
RJ-48 Pin
(Data Numbering
Form) Signal
4 RX/Ring/– <––>TX/Ring/–
5 RX/Tip/+ <––>TX/Tip/+
1 TX/Ring/– <––>RX/Ring/–
2 TX/Tip/+ <––>RX/Tip/+
3 Shield/Return/Ground
6 Shield/Return/Ground
No connect No connect
No connect No connect