Westell Inc. AR210 用户手册
SuperVision® System Manual
CAP Rate-Adaptive Ethernet DSL Remote Unit
A90-36R210W00
Part # 030-1010xx
A90
Rev.
P2
, 07/01/98
1998, Westell, Inc
.
Release 1.2
Printed in the USA
10BT-R.DOC
9
Pinout for DSL
4
DSL Tip
5
DSL Ring
6
Not Used
7
Not Used
8
Not Used
DSL connector designed to operate with either an 8-pin or 6-pin standard cable.
Pinout for 10BaseT interface
1
Rx+
2
Rx-
3
Tx+
4
Not Used
5
Not Used
6
Tx-
7
Not Used
8
Not Used
6.6 Signals
ATU-C to ATU-R – POTS and DSL signals are sent from the access line module at the
central office to the ATU-R over the digital subscriber line. The POTS signal is carried in the
voice band frequency range, 0 to 4 kHz, that is specified by the telephone network voice
switch. The ADSL video and data signals are carried in the frequency range above 35 kHz
(out-of-voice band). The upstream channel occupies the frequency range between 35 kHz
and 170 kHz. The downstream channel occupies the range above 240 kHz and below 1.551
MHz.
central office to the ATU-R over the digital subscriber line. The POTS signal is carried in the
voice band frequency range, 0 to 4 kHz, that is specified by the telephone network voice
switch. The ADSL video and data signals are carried in the frequency range above 35 kHz
(out-of-voice band). The upstream channel occupies the frequency range between 35 kHz
and 170 kHz. The downstream channel occupies the range above 240 kHz and below 1.551
MHz.
ATU-R to Subscriber – The ATU-R receives the modulated signal from the access line
module and then separates the POTS signal from the DSL signal. The POTS signal is
routed to the subscriber’s telephone. The ATU-R demodulates the DSL signal and routes it
to the PC or other user equipment via an 10BaseT interface.
module and then separates the POTS signal from the DSL signal. The POTS signal is
routed to the subscriber’s telephone. The ATU-R demodulates the DSL signal and routes it
to the PC or other user equipment via an 10BaseT interface.
6.7 10BaseT Ethernet DSL Diagnostics
The system includes built-in diagnostics that may be invoked through the element-
management system. Diagnostics are performed at the card level on an individual basis and
results are sent back to the EMS system.
management system. Diagnostics are performed at the card level on an individual basis and
results are sent back to the EMS system.
The Ethernet DSL system provides the unit self-test diagnostic to facilitate trouble isolation
and restoral. Unit self-tests verify the operation of the units themselves and are used to
determine whether the equipment is causing specific problems. When card-level
diagnostics are performed, the cards and circuits under test are taken out-of-service.
and restoral. Unit self-tests verify the operation of the units themselves and are used to
determine whether the equipment is causing specific problems. When card-level
diagnostics are performed, the cards and circuits under test are taken out-of-service.