Avaya Configuring WAN Lines Services Manuel d'utilisateur Page 144

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Configuring WAN Line Services
7-10
308648-14.00 Rev 00
HDB3 line coding replaces a block of eight consecutive binary zeros 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 zeros.
AMI line coding is also 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 port remains
synchronized upon receiving up to 45 consecutive zeros.
Using the BCC
To change the line coding, navigate to the mce1 prompt (for example,
stack
;
mce1/1/2/1
) and type:
port-line-coding
variable
For example:
mce1/1/2/1#
port-line-coding ami
mce1/1/2/1#
port-line-coding hdb3
Using Site Manager
See the Line Coding parameter on page A-26 for information.
Setting the MCE1 Alarm Threshold Time
By default, the MCE1 interface waits 2 seconds before logging a performance
defect or anomaly as an event message. Change the alarm threshold to any value
from 2 to 10 seconds for this MCE1 interface.
Using the BCC
To change the alarm threshold, navigate to the mce1 prompt (for example,
stack
;
mce1/1/2/1
) and type:
setup-alarm-threshold
integer
For example:
mce1/1/2/1#
setup-alarm-threshold 3
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