Juniper Networks J4350 - Manual (Page 55)

Physical Interface Modules Overview
Table 16: Status LEDs for Serial Ports (continued)
Color State Description
Red On steadily Active with a local alarm. The router has
detected a failure.
Unlit Off Offline.
Dual-Port T1 or E1 PIM
The Dual-Port T1 PIM (Figure 13) and Dual-Port E1 PIM (Figure 14) provide a
physical connection to T1 or E1 network media types. Each PIM has two physical T1
or E1 ports with an integrated channel service unit (CSU) or data service unit (DSU).
Figure 13: Dual-Port T1 PIM
T1
STATUS
STATUS
PORT 0
PORT 1 g002331
Figure 14: Dual-Port E1 PIM
E1
STATUS
STATUS
PORT 0
PORT 1 g002330
The Dual-Port T1 and E1 PIMs provides the following key features:
Onboard network processor
Integrated CSU/DSU—Eliminates the need for a separate external device
56-Kbps and 64-Kbps modes
ANSI T1.102, T1.107, and T1.403 standards compliance
Field-Replaceable PIMs 35