Span Status Fields And Descriptions - ADC HiGain HLU-432 User Manual

Provisioning
Table 5 lists the Span Status fields and descriptions.
messages displayed on the Span Status screens.
Span Status Field
Time
Date
Circuit ID#
Alarms
Loopback
Power Level
Margin
Pulse ATTN
INS Loss
24-Hour ES
24-Hour UAS
24-Hour ES Count
24-Hour UAS Count
Frame type
Code type
The Span Status screens shown on the previous page display a four-character code under the
Alarms entry. These codes are described in
The following codes are reported with a RCV or XMT prefix that indicates the signal is being
transmitted or received: LLOS, RLOS, LAIS, or RAIS.
RCV (xxxx) - Signal received (xxxx) at the T1 input to either the HLU or HRU.
XMT (xxxx) - Signal transmitted (xxxx) at the T1 output of either the HLU or HRU.
16
Table 5. Span Status Fields and Descriptions
Description
Time of day when Span Status was checked.
Date when Span Status was checked.
Shows the user-defined circuit ID.
Presence or absence of alarm conditions. See
Indicates Off condition or identifies specific active loopback. See
Indicates the HDSL line voltage in its Low (-135 Vdc) or High (±112 Vdc) state.
Indicates the excess signal to noise ratio at all HDSL ports, relative to a
-7
10 Bit Error Rate.
• First value is current margin.
• Second value is minimum margin since last cleared.
• Third value is maximum margin since last cleared.
• N/A means that the margin is not available.
The minimum and maximum margins are cleared and updated every time the Span Status screen
is cleared, and every time the system clock passes 12:00 AM midnight.
Indicates the attenuation of the 2B1Q pulse from the distant end. The value is related to the 196 kHz
loss of the cable pair. The pulse attenuation is a more direct indication of the loop attenuation to
the 2B1Q signal than is the 196 kHz loss. The normal HiGain ATTN operation range is from 0 to
28 dB.
Indicates the approximate insertion loss of the loops at the HDSL line rate of 196 kHz. It is
generated by multiplying the pulse attenuation by 1.25. Normal range is 0 dB to 35 dB.
The number of one second intervals that contained at least one CRC error. This value is a running
total of the last 24 Hours.
The number of seconds the HDSL loop was out of sync.
The number of seconds in which at least one error was detected on the DS1 input over a 24-hour
period. Errors included are: DS1 Frame errors; and UAS, BPV, and ESF CRC errors.
The number of seconds during which the DS1 input signal was absent (175 ±75 consecutive
zeroes) over a 24-hour period.
Type of DS1 framing used on the input stream (SF or ESF).
Type of DS1 line coding used (AMI, B8ZS, AMI: ZBTSI, or B8ZS: ZBTSI). The latter two indicate
the code type that is being received when HiGain line is set to ZBTS1 mode. When set to AMI or
B8ZS, the HLU displays the selected code rather than the code type that is actually being received.
July 18, 2002
Table 6 and Table 7 on page 17
Table 12 on page
Table 6 on page 17.
150-432-100-02, Revision 02
describe alarm and loopback
39.
Table 13 on page 42.
HLU-432 List 1