Figure 2: PRI link-diagnostic and remote loopback tests
PRI error detection
Bit error rate
Bit-error-rate monitoring detects errors in transmission. See Figure 3: Bipolar violations on
page 47.
Bipolar violation (BPV) tracking
In a bipolar pulse stream, pulses alternate in polarity
. A bipolar violation has occurred if, after
transmission, two pulses of the same polarity are received in succession (this could be caused
by an electrical disturbance such as noise).
Primary Rate Interface maintenance
46 ISDN Primary Rate Interface Maintenance November 2011
Comments? infodev@avaya.com
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