
Configuring Dial Services
7-32 114062 Rev. A
Parameter: Line Coding
Default: HDB3
Options: T34AMI
| HDB3
Function: Specifies a line coding method. 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.)
HDB3 (high-density bipolar coding) line coding maintains sufficient 1s
density in the E1 data stream. It replaces a block of eight consecutive
binary 0s with an 8-bit HDB3 code containing bipolar violations in the
fourth and seventh bit positions of the substituted code. In the receive
direction, the HDB3 code is detected and replaced with eight consecutive
binary 0s.
Instructions: Specify the line coding method.
MIB Object ID: 1.3.6.1.4.1.18.3.4.9.4.1.7
Parameter: Setup Alarm Threshold (seconds)
Default: 2 seconds
Range: 2 to 10 seconds
Function: Specifies the time interval during which MCE1 tolerates a performance
defect or anomaly. If the defect or anomaly still exists when the time
interval expires, MCE1 records a the failure and logs an event message.
Instructions: Set the timer value.
MIB Object ID: 1.3.6.1.4.1.18.3.4.9.3.1.7
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