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Introduction
ASMi-450 Installation and Operation Manual 1-11
Ethernet Interface
Compliance IEEE 802.3
Interface Type 10BaseT for use on UTP and STP media
Interface Connector RJ-45 shielded eight-pin connector
Internal Bridge Remote MAC-layer bridge with self-learning
Indicators
User's Serial Data Port
−
Transmit Data (TD)
−
Receive Data (RD)
Ethernet Port
−
Link status
−
Collision indicator
−
Transmit and receive data activity
HDSL Line
−
LOS (loss of synchronization)
−
QLTY (good quality)
Status
−
TEST
−
ALARM
Diagnostics
Loopbacks
−
Local loopback on the user's serial data port of the local
ASMi-450
−
Remote loopback on the user's serial data port of the
remote ASMi-450
Timing Modes
Central Unit
−
Internal timing, derived from local oscillator
−
External timing, locked to user's port receive clock
Remote Unit Loopback timing, derived from incoming HDSL receive
clock
Front Panel Controls
LCD 2
×
16 characters
Push-buttons CURSOR, SCROLL, ENTER
Control Port
Interface ITU-T Rec. V.24/EIA RS-232, asynchronous DCE interface
for direct connection of control terminal
Data Rate 300, 1200, 2400, 9600, with Autobaud option