Juniper E-Series Installation And User Manual page 82

6-6 CHAPTER 6
Cabling E-Series Routers
• European – Two 75-ohm E1 2.048-Mbps inputs with BNC connectors
• North American – Two 100-ohm T1 inputs with three pin wire-wrap
connectors. Pins are labeled T (tip), G (ground), and R (ring). We
recommend using 26-AWG wire minimum.
Note: Use shielded cables to connect the external clock sources to the clock
source input ports.
Figure 6-2 ERX-14xx model SRP I/O module