Diagnostic Testing
Internal and external diagnostic tests
Stinger®
Administration Guide
12-25
Figure 12-1. Data passing through a modem’s digital circuitry
Analog loopback
When the line is enabled for analog loopback, the data passes from the digital
circuitry to analog circuitry and is then looped back, as shown in Figure 12-2. Analog
loopback tests more circuitry.
Figure 12-2. Data passing through a modem’s digital and analog circuitry
The following sample commands put a line into analog loopback mode:
admin>
read hdsl2 {1 1 1}
HDSL2/{ shelf-1 slot-1 1 } read
admin>
set loop-back = analog
admin>
write
Running built-in self tests (BISTs) on DSL ports
This test verifies proper operation of a specific DSL port. You can run a BIST using the
command-line interface or by way of SNMP.
Supported LIMs
This capability is available on the following LIMs with ADSL2plus capability:
72-port ADSL2+ LIM
48-port ADSL2+ LIM
48-port low-power LIM
Enabling the built-in self test using the command-line interface
To enable the BIST test, set the
bist-enabled
parameter in
line-diag
profile to
yes
.
For example:
DSL loop
Analog
(hybrid)
circuitry
Digital
circuitry
DSL loop
DSL loop
Analog
(hybrid)
circuitry
Digital
circuitry
DSL loop
Содержание Stinger
Страница 1: ...Stinger Administration Guide Part Number 7820 0712 008 For software version 9 7 0 August 2004 ...
Страница 4: ......
Страница 16: ......
Страница 18: ......
Страница 62: ......
Страница 82: ......
Страница 96: ......
Страница 182: ......
Страница 218: ......
Страница 236: ......
Страница 252: ......
Страница 288: ......
Страница 350: ......
Страница 362: ......
Страница 374: ......