PairGain T1L2N20A, Руководство пользователя

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Provisioning 150-388-151-01, Revision 01
40 September 15, 1999 HLU-388 List 5A
To display the circuit Help diagram ( Figure 22 ), press . The symbols 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.
Those 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 ).
• Press to view the HDSL errored seconds values for the circuit ( Figure 24 on page 41 ).
• Press to view the HDSL unavailable seconds values for the circuit ( Figure 24 on page 41 ).
• Press to view the DS1 errored seconds values for the circuit ( Figure 24 on page 41 ).
• Press to view the DS1 unavailable seconds values for the circuit ( Figure 24 on page 41 ).
The Troubleshooting screens use the following navigational keyboard commands:
• Press the (Help), (Margin Values), (Insertion Loss), (HDSL Errored Seconds), (HDSL
Unavailable Seconds), (DS1 Errored Seconds), or (DS1 Unavailable Seconds) 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
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TIME: 01:35:25 TROUBLESHOOTING with HELP
DATE: 08/15/99 CIRCUIT ID#:
___ ___ ___ ___ ___ ___
| | 1 | | 1 | | 1 | | 1 | | 1 | |
>>>>| |=======| |=======| |=======| |=======| |=======| |>>>>
<<<<| |=======| |=======| |=======| |=======| |=======| |<<<<
|___| 2 |___| 2 |___| 2 |___| 2 |___| 2 |___|
NTWK HLU HDU1 HDU2 HDU3 HDU4 HRU CUST
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 Errored Second Shorts, interference, noise
(N) HDSL Unavailable Second Shorts, interference, noise
R Channel Reversal Channel Reversal nearest HLU is displayed
E(R)R DS1 Errored Second Errors include BPV, framing and CRC
L(O)S DS1 Unavailable Second Loss of T1 signal at input
AIS Alarm Indication Signal Far end LOS, HDSL LOSW, loopbacks or MAL
AUTOUPDATE OFF (E)xit (A)uto(U)pdate (B)ack (L)oopbacks