T3 or E3 PIM

The T3 (also known as DS3) PIM (Figure 16) and E3 PIM (Figure 17) provide a physical connection to T3 or E3 network media types. The T3 and E3 PIMs include one physical T3 or E3 port with an integrated data service unit (DSU).

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.

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.

Status LEDs indicate port status. Table 19 describes the meaning of the LED states.

Table 19: Status LEDs for T3 and E3 Ports