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Provisioning 150-388-105-05, Revision 05
40 March 25, 2000 HLU-388 List 5
Press to display the circuit Help diagram ( Figure 22 ). The symbol legend used to describe all circuit events and
the corresponding troubleshooting tips are located beneath the Help diagram. A troubleshooting symbol on the
diagram identifies the location of a problem.
Legend symbols that appear in parentheses are also keyboard commands for obtaining additional information.
• Press to display margin values for the circuit ( Figure 23 on page 41 ).
• Press to display the insertion loss values for the circuit ( Figure 24 on page 41 ).
The Troubleshooting screens use the following navigational keyboard commands:
• Press the (Help), (Margin Values), or (Insertion Loss) toggle keys to enter or exit the respective
troubleshooting screen.
• Press to return back to the Maintenance Terminal Main Menu.
• Press to return back to the main Troubleshooting screen from the Help, Margin Values, or Insertion Loss
screens.
• Press to update a screen.
• Press to automatically update the screen. (Press again to deactivate auto update.) The Troubleshooting
screen indicates whether AutoUpdate is on or off.
• Press to directly access the Loopback menu (see “Loopback Mode Screen” on page 28 ).
Figure 22. Troubleshooting with Help
H
M
I
H M I
E
B
U
A A
L
TIME: 00:30:04 TROUBLESHOOTING with HELP
DATE: 02/18/00 CIRCUIT ID#
___ ___ ___ ___ ___ ___
| | 1 | | 1 | | 1 | | 1 | | 1 | |
>>>>| |=====| |=====| |=====| |=====| |=====| |>>>>
<<<<| |=====| |=====| |=====| |=====| |=====| |<<<<
|___| 2 |___| 2 |___| 2 |___| 2 |___| 2 |___|
NETWORK HLU HDU1 HDU2 HDU3 HDU4 HRU CUSTOMER
SYSTEM OPERATIONAL
SYMBOLS DESCRIPTIONS TROUBLESHOOTING
) ( LOOPBACK: ) - Network loopback; ( - Customer loopback
X HDSL loop not in sync Bad connection
(M) Low Margin Alarm Poor HDSL signal, long loop, interference
(I) High Insertion Loss Long loops, bridged taps
C HDSL CRC Errors Shorts, interference, noise
R Channel Reversal Circuit is ok, loops are reversed
ERR DS1 Errors Errors include BPV, framing, CRC and LOS
LOS DS1 Loss of Signal T1 is not detected at input to unit
AIS Alarm Indication Signal Far end LOS, HDSL LOSW, loopbacks or MAL
AUTOUPDATE OFF (E)xit (A)uto(U)pdate (B)ack (L)oopbacks