HOP RX (SDH)
Press TEST, HOP , and Path (under HOP RX).
Error Analysis
SONET/SDH Application
B3 (BIP-8, Bit-Interleave Parity - 8 bits): The B3 error indicates a
High Order Path parity error by performing an even-parity check
over all bits of the previous VC-N.
HP-REI (High Order Path - Remote Error Indicator): The HP-REI
error is declared when bits 1 through 4 of the G1 byte contain one
pattern from the following binary range: "0001" through "1000" (1
to 8) (located in every STM-1 of an STM-n signal).
SDH Tabs
HOP RX (SDH)
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