Dual-Port T1 or E1 Chassis

The J2300 Dual-Port T1 or E1 chassis has two Fast Ethernet LAN ports and two T1 or E1 WAN ports. Figure 18 shows the E1 chassis, and Figure 19 shows the T1 chassis.

The T1 or E1 chassis provides the following key features:

• Onboard network processor
• Integrated CSU/DSU—Eliminates the need for a separate external device
• Framed, unframed (E1 only), and fractional operational modes
• 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
• Local and remote loopback, bit error rate test (BERT), T1 facilities data link (FDL), and long buildout diagnostics

For pinouts of cable connectors for the network ports, see Network Cable Specifications and Connector Pinouts.

For alarms, see configuring and monitoring alarms information in the J-series Services Router Administration Guide.

Table 17 describes the meaning of the LEDs for a Fast Ethernet port, and Table 21 describes the meaning of the status LED for a T1 or E1 port.

Table 21: Status LEDs for T1 and E1 Ports