
Configuring WAN Line Services
8-8
117345-B Rev. 00
The carrier determines signal levels on a long-haul (0 to 6000 ft. of cable) T1
network interface. If 0.0 dB is not sufficient for long-haul, the carrier determines
values of -15 and -7.5 dB.
Signal power for DSX-1 short-haul (0 to 655 ft.) is based on cable length.
For DSX-1, decibel levels correspond to cable length, as follows:
• 0.0 dB -- 0 to 133 ft.
• 0.5 dB -- 133 to 255 ft.
• 0.8 dB -- 255 to 399 ft.
• 1.1 dB -- 399 to 533 ft.
• 1.5 dB -- 533 to 655 ft.
By default, the signal level is 0.0 dB. Set the long-haul or short-haul signal level
for this FT1 interface according to the length of the cable or as the carrier
specifies.
See the Signal Level (dB) parameter on page A-45
for information.
Setting the Alarm Threshold Time
By default, the FT1 interface waits 2 seconds before logging a performance defect
or anomaly as an event message. Change the alarm threshold time to any value
from 2 to 10 seconds.
See the Setup Alarm Threshold (seconds) parameter on page A-46
for
information.
Setting the Alarm Threshold Clear Time
By default, the clear time for performance-failure conditions is 2 seconds. If the
defect or anomaly clears in this time interval, FT1 records a performance-cleared
condition and logs an event message. You can change the alarm threshold clear
time to any value from 2 to 10 seconds.
Set the alarm threshold clear time for this FT1 interface.
See the Clear Alarm Threshold (seconds) parameter on page A-46
for
information.
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