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RAD
HTU-E1 HDSL Termination Unit |
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- Using HDSL technology,
HTU E1/HTU-E1L extends the range of E1 equipment up
to 4.8 km (3 miles) over 24 AWG (0.5 mm), 4-wire
copper cable. Using the HDSL repeater extends the
range up to 8.4 km (5.2 miles) between the central
office and customer premises.
- HTU-E1/HTU-E1L
eliminates the need for repeaters or optical cable
in the last mile (local loop) or in the campus
network environment.
- Using advanced
equalization, adaptive-filtering, echo cancellation
technology and 2B1Q line coding, HTU E1/HTU E1L
compensates for line impairments, bridge taps and
mixed cabling. High immunity to background noise
enables transmission of multiple HDSL lines in the
same physical cable.
- Two clock modes are
available:
- Internal: where
the internal clock generator provides clock to
the E1 interface and HDSL line. Available only
when the unit is configured as
"CENTRAL".
- External: where
the clock is recovered from the HDSL interface
and passed to the E1 interface (and vice versa).
Available when the unit is configured as either
"CENTRAL" or "REMOTE".
- Setup, control and
monitoring of status and diagnostics information can
be performed using one of the following:
- Front panel LCD
with three push buttons, using menu driven
management
- ASCII terminal
connected to the async control port using
command line interpreter
- SNMP management
station connected to the async control port,
using Serial Link Interface Protocol (SLIP).
- The priority bumping
feature allows the user to select the timeslot
priority (high or low) in case one of the HDSL lines
is down.
- HTU-E1 is available as
a standalone unit or as a rack mount card (HTU-E1C)
for the LRS-12 modem rack.
- HTU-E1/HTU-E1L is
available in either AC or DC version and can be
mounted in a standard
19" rack using special hardware. One or two
HTU-E1 units can be mounted side-by-side.
- The HTU-E1C card can
provide a remote power feed for an HDSL repeater or
an HTU-E1L unit. For the remote power feeding
option, a standalone power supply,
LRS-PS-FEED, should be ordered separately.
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