Juniper Networks J-series Services Router J2320 - Manual (Page 77)

Dual-Port Serial PIM
The Dual-Port Serial PIM (Figure 28 on page 55) provides a physical connection to
serial network media types through two serial interface ports.
Figure 28: Dual-Port Serial PIM
The Dual-Port Serial PIM provides the following key features:
■ Onboard network processor
■ Autoselection of operation modes based on data terminal equipment (DTE) or
data communication equipment (DCE) cables
■ Local and remote loopback diagnostics
■ Configurable clock rate for the transmit (Tx) clock and receive (Rx) clock
For pinouts of cable connectors for serial PIMs, see “Serial PIM Cable
Specifications” on page 223.
To install or remove a PIM, see “Replacing a PIM” on page 172.
Status LEDs indicate port status. Table 25 on page 55 describes the meaning of the
LED states.
Table 25: Status LEDs for Serial Ports
Description State Color
Online with no alarms or failures. On steadily Green
Active with a local alarm. The router has
detected a failure. On steadily Red
Offline. Off Unlit
For alarms, see the configuring and monitoring alarms information in the J-series
Services Router Administration Guide.
Field-Replaceable PIMs ■ 55
Chapter 3: PIM and VoIP Module Overview