ADTRAN 1245001L6, Руководство по установке и обслуживанию

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8 Section 61245001L6-5, Issue 7 61245001L6-5G
The screens illustrated in Figures 8 through 16 are
for an HDSL circuit deployed with ADTRAN’s
Low Voltage HDSL technology. The circuit
includes an HTU-C M R, HTU-R, and two HREs.
This scenario was chosen for inclusiveness of
functionality. However, other configurations are
possible and their displays will vary slightly from
those shown in this section.
A terminal session is initiated by entering multiple
space bar characters, which are used by the HTU-C
M R to determine the speed of the terminal. Once
the speed has been determined, the Introductory
Menu will appear, illustrated in
Figure 8 .
From the Introductory Menu, the Main Menu may
be selected. The Main Menu provides access to
detailed performance and configuration information,
illustrated in
Figure 9
, HDSL Main Menu Screen.
From the Main Menu, the following screens can be
accessed.
1. Current System Status
2. Performance History
3. ADTRAN Information
4. Loopback Options
5. Self-Test
6. Provisioning
7. Troubleshooting
8. Set Time/Date/Circuit ID
The Current System Status screen, illustrated in
Figure 10
, provides quick access to status
information for both the HTU-C M R and HTU-R.
Type “H” once to view the Current System Status
screen for the HRE #1; type “H” a second time to
view the Current System Status Screen for HRE #2.
See
Figure 10A
for the HRE Current System Status
screen.
At each 15-minute interval, the performance
information is transferred to the 15-minute
performance data register accessed from the
Performance History screen. This unit supports the
display of performance information in 15-minute
increments for the last 24-hour period. At each
24-hour interval, the performance data is transferred
into the 24-hour performance data register also
accessed using the Performance History screen,
illustrated in
Figure 11 .
Type “H” once to view the Performance History
screen for HRE #1; type “H” a second time to view
the HRE Performance History Screen for HRE #2.
See
Figure 11A
for the HRE Performance History
Screen.
At the Current System Status screen, type “Z” to
reset the current performance registers to zero on the
Current System Status and Performance History
screens.
Figures 10 and 10A consolidate current information
for the HDSL, DSX-1, and DS1 interfaces. A key
to the information provided is found in the center of
the screen. Arrows indicate the key applies to both
the HTU-C M R and HTU-R.
LOSS ................. Pulse Attenuation Measurement 4
SYNC ................ HDSL Loop 1 and Loop 2 Sync
Status
ES 15M/24H ..... Errored Seconds
5
SES 15M/24H ... Severely Errored Seconds 5
UAS 15M/24H .. Unavailable Seconds
5
An indication of Pair Reversal (if present) is given
at the bottom of the first key column. Status and
configuration information for the DS1 and DSX-1
signals is located in the center of the screen near the
bottom.
FRAME ...... T1 Framing Format
CODE ......... T1 Line Code selected
LBO ............ Line Build-Out selected (for DSX-1);
Customer Signal of 0 or -15 dB
(for DS1)
NIU ............. Network Interface Unit enabled?
BPV ............ Bipolar Violations detected
(DSX-1 and DS1)
ES ............... Errored Seconds (DSX-1 and DS1)
SES ............. Severely Errored Seconds
(DSX-1 and DS1)
UAS ............ Unavailable Seconds (DSX-1 and DS1)
Alarms ........ Lists current alarm condition status
4 LOSS is typically several dB less than the insertion loss
measured at 200 kHz. The LOSS measurement is a better
indication of the loop’s attenuation of the 2B1Q signal than
the insertion loss measured at a single frequency. ADTRAN
HDSL can operate on cables with an excess of 30 dB LOSS.
5
The first number is for the current 15-minute period and the
second is the current 24-hour period (Loop 1 and Loop 2
numbers are displayed).