Juniper J-series Services Router J4350 Getting Started Manual page 78

J2320, J2350, J4350, and J6350 Services Router Getting Started Guide
Dual-Port T1 or E1 PIM
The Dual-Port T1 PIM (Figure 29 on page 56) and Dual-Port E1 PIM
(Figure 30 on page 56) 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 29: Dual-Port T1 PIM
Figure 30: Dual-Port E1 PIM
The Dual-Port T1 and E1 PIMs provides the following key features:
For pinouts of cable connectors for T1 and E1 PIMs, see "E1 and T1 RJ-48 Cable
Pinouts" on page 235.
To install or remove a PIM, see "Replacing a PIM" on page 172.
Status LEDs indicate port status. Table 26 on page 57 describes the meaning of the
LED states.
56
Field-Replaceable PIMs
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
G.703, G.704, and G.706 E1 standards compliance
Independent internal and external clocking system
Loopback, bit error rate test (BERT), T1 facilities data link (FDL), and long buildout
diagnostics