Dual-Port G.SHDSL Chassis

The J2300 Dual-Port G.SHDSL chassis has two Fast Ethernet LAN ports and two G.SHDSL WAN ports, as shown in Figure 22. The G.SHDSL ports provide symmetric high-speed digital subscriber line (SHDSL) interfaces to ATM network media for ATM-over-SHDSL connections.

The G.SHDSL chassis provides the following key features:

• Onboard network processor
• 2-port two-wire mode and 1-port four-wire mode

  Note: Contact the Juniper Networks Technical Assistance Center (JTAC) before implementing 1-port four-wire mode.

• Programmable line rates in both modes:
  • 2-port two-wire mode supports autodetection of line rate and fixed line rates from 192 Kbps to 2.304 Mbps in 64-Kbps increments.
  • 1-port four-wire mode supports fixed line rates from 384 Kbps to 4.608 Mbps in 128-Kbps increments.
• Up to 16 virtual channels (VCs) per G.SHDSL port
• ATM-over-G.SHDSL framing
• “Dying gasp” notification
• Local and remote loopback diagnostics
• ITU-T G.991.2, ITU-T G.994.1, and ITU-T G.997.1 standards compliance

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 24 describes the meaning of the status LED for a G.SHDSL port.

Table 24: Status LED for G.SHDSL Ports