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100

101

show e1

2-247

line errors [circuit

]

Displays several categories of line errors for all circuits or for a speciﬁc circuit. The table

includes the following information:

Sample Display – show e1 line errors

E1 Module Line Errors:

----------------------

Remote Multiframe

BiPolar Alarms Alarms Multiframe Sync

Slot Conn Circuit Violtns Received Received Errors Losses

---- ---- ------- ---------- ---------- ---------- ---------- ----------

2 1 E1-21 0 0 0 1 0

2 2 E1-22 0 0 0 1 0

2 entries in table.

Slot Slot identiﬁer; ranges from 1 to 14.

Conn Connector identiﬁer: 1 or 2.

Circuit Name of the circuit associated with this line.

BiPolar Violtns Number of bipolar violations on this line. On an E1 line, ones are

transmitted as alternating negative and positive pulses, and zeros

are simply the absence of pulses. Thus a bipolar violation occurs if

there are two or more consecutive pulses of the same polarity. This

error count indicates the quality of the E1 line.

Remote Alarms Received Number of remote alarms received on this line. This error is

equivalent to a “yellow alarm” in T1. It means that we have not lost

sync but that the remote side of the connection has detected a

problem with the line.

Multiframe Alarms Received Number of multiframe alarms received on this line. This error

statistic is relevant only in CAS mode and occurs when bit 6 of

timeslot 16 in frame 0 is set for two consecutive multiframes.

Multiframe Errors Number of multiframe errors on this line. This error occurs

whenever two consecutive CAS multiframe alignment words are

received with an error.

Sync Losses Number of instances of sync losses detected on this line. This error

statistic is equivalent to the “red alarm received” statistic on T1.

1 2 ... 294 295 296 297 298 299 300 301 302 303 304 ... 787 788

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