Juniper CTP2000 Series Hardware Manual page 23

Figure 17: Jumper Locations on the RTM
E&M
type
config
jumpers
Figure 18: Jumper Positions for Signaling Types
NOTE: Jumper JP17 must be in Position 1-2 (see
Type II signaling. This jumper ties all signal battery (SB) signals to battery voltage (–48V).
Jumper JP26 is used to connect all signal grounds (SG) to the chassis ground. When jumper JP26 is in
Position 1-2, the signal ground is connected to the chassis ground. In Position 2-3, it is isolated from the
chassis ground.
Table 1: Jumper Positions for Configuring Port Signaling Type
Jumper
Port 0 JP1
Unused
dual
RJ-45
Type I
Type II
Pin 1
Type V
Signaling Type I
Position 1-2
Table 1 on page 16) if any ports are set for
Signaling Type II
Position 2-3
Signaling Type V
Position 1-2
16