
Configuring Line Services
6-10 114078 Rev. A
You can select AMI line coding method instead. AMI line coding is bipolar: a
binary 0 is transmitted as zero volts and a binary 1 is transmitted as either a
positive or negative pulse, opposite in polarity to the previous pulse. (When
configured for AMI line coding, the MCE1 link module remains synchronized
upon receiving up to 45 consecutive 0s.)
You can set the line coding for this MCE1 interface.
Setting the Signal Level
The Signal Level parameter specifies the T1 transmit power level in decibels (dB).
The DS1 values of -15 and -7.5 dB are long-haul and the carrier determines these
values if 0.0 dB is not sufficient.
The DSX1 values of 0.0, 0.5, 0.8, 1.1, and 1.5 dB are short-haul, and correlate
with cable length as follows:
• 0.0 dB -- 0 to 133 ft.
• 0.5 dB -- 133 to 255 ft.
• 0.8 dB -- 266 to 399 ft.
• 1.1 dB -- 399 to 533 ft.
• 1.5 dB -- 533 to 655 ft.
By default, the signal level is set to 0.0 dB. You can set the signal level for this
MCT1 interface.
Setting the Alarm Threshold Time
By default, the MCT1 interface waits 2 seconds before logging a performance
defect or anomaly as an event message. You can change that time to any value
from 2 through 10 seconds.
Site Manager: Line Coding parameter: page A-49
Site Manager: Signal Level (dB) parameter: page A-50
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