Black Box LR0304A-KIT, Руководство пользователя

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4-Port and 8-Port T1/E1 Ethernet Network Extender Kits
2. Overview
2.1 Introduction
The LR0304A-KIT includes two 4-port T1/E1 Ethernet Network Extenders that inversely multiplex data from an Ethernet
10BASE-T/100BASE-TX interface into four T1/E1 lines, then multiplexes back from four T1/E1 lines to Ethernet. The LR0304A-KIT
provides an Ethernet bridge connection through four T1/E1 lines at a maximum bandwidth of 7.936 Mbps for E1 and 6.144 Mbps
for T1. It supports T1/E1 framed modes with different line codes plus it features T1/E1 loopback.
The LR0308A-KIT includes two 8-port T1/E1 Ethernet Network Extenders that inversely multiplex data from an Ethernet
10BASE-T/100BASE-TX interface into eight T1/E1 lines, then multiplexes back from eight T1/E1 lines to Ethernet. The LR0308A-KIT
provides an Ethernet bridge connection through eight T1/E1 lines at a maximum bandwidth of 15.872 Mbps for E1 and 12.288
Mbps for T1.
Both kits automatically maintain and back up a point-to-point Ethernet bridge connection when an T1/E1 line disconnects. This
disconnect causes individual T1/E1 signal loss and the LED turns “OFF.” The extenders still maintain the Ethernet connection via
the rest of T1/E1 connections, and they automatically recover the Ethernet bridge connection when any T1/E1 is reconnected. The
Ethernet interface autonegotiates for 10BASE-T/100 BASE-TX and half-/full-duplex. You can manually configure the interface and
monitor the connection status via a console port. LR0304A-KIT and LR0308A-KIT also feature an Auto MDI/MDI-X
function to support auto Tx/Rx swap.
These extenders provide a cost-effective symmetrical broadband Ethernet solution over T1/E1 transmission
network.
E1/T1
4xE1/T1 4xE1/T1
Transmission Network
Customer Interface Trunk Interface
Customer Interface
Figure 2-1. Typical appllication for the LR0304A-KIT.