Juniper Networks E-Series manual DB-9

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.

26-AWG wire

BNC (Europe)

Wire-wrap connectors (North America, Japan)

RJ-45

ALARMS

EXTERNAL TIMING

CONSOLE

+

MINOR -

+

MAJOR -

+

CRITICAL -

E1 75 OHM

CLOCK IN

	T
A	G
	R

T1 100 OHM

CLOCK IN

	T
B	G
	R

10/100

BASE T

RS-232

DB-9

g013750

Figure 6-2ERX-14xx model SRP I/O module