Juniper Networks J4350 - Manual (Page 59)

Physical Interface Modules Overview
Figure 17: E3 PIM
RX
TX STAT
US E3
g002334
The T3 and E3 PIMs provide the following key features:
Onboard network processor
Integrated DSU—Eliminates the need for a separate external device
Subrate and scrambling options with support for major DSU vendors
Independent internal and external clocking system
Loopback (payload–supported only on T3 PIM, local, and remote), bit error
rate test (BERT), and T3 far-end alarm and control (FEAC) diagnostics
For pinouts of cable connectors for T3 and E3 PIMs, see “E3 and T3
BNC Connector Pinout” on page 198.
For alarms, see the configuring and monitoring alarms information in
the J-series Services Router Administration Guide.
For installing and removing a PIM, see “Replacing a PIM” on page 144.
Status LEDs indicate port status. Table 19 describes the meaning of the LED states.
Table 19: Status LEDs for T3 and E3 Ports
Color State Description
Green On steadily Online with no alarms or failures.
Red On steadily Active with a local alarm. The router has
detected a failure.
Field-Replaceable PIMs 39