STANDARD PRODUCT
PM5365 TEMAP
DATASHEET
PMC-1991148
ISSUE 3
HIGH DENSITY VT/TU MAPPER
AND M13 MULTIPLEXER
Tributary path BIP-2 errors are detected by comparing the tributary path BIP-2
bits in the V5 byte extracted from the current multiframe, to the BIP-2 value
computed for the previous multiframe. BIP-2 errors may be accumulated on a
block or nibble basis as controlled by software configurable registers. Far end
block errors (FEBEs) are detected by extracting the FEBE bit from the tributary
path overhead byte (V5).
Tributary path remote defect indication (RDI) and remote failure indication (RFI)
are detected by extracting bit 8 and bit 4 respectively of the tributary path
overhead byte (V5). The RDI is recognized when bit 8 of the V5 byte is set high
for five or ten consecutive multiframes while RFI is recognized when bit 4 of V5
is set high for five or ten consecutive frames. The RDI and RFI bits may be
treated as a two-bit code word. A code change is only recognized when the code
is unchanged for five or ten frames.
The tributary path signal label (PSL) found in the tributary path overhead byte
(V5) is processed. An incoming PSL is accepted when it is received unchanged
for five consecutive multiframes. The accepted PSL is compared with the
associated provisioned value. The PSL match/mismatch state and UNEQ
(unequipped) state is determined by the following:
Table 2
- Path Signal Label Mismatch State
Expected PSL
Accepted PSL
PSLM State
UNEQ State
(Unequipped)
000
000
000
000
001
000
001
PDI Code
Match
Inactive
Inactive
Inactive
Inactive
Mismatch
Mismatch
Mismatch
Mismatch
XXX U 000, 001, PDI Code
000
Active
(unequipped)
001
001
001
001
PDI Code
Match
Match
Match
Inactive
Inactive
Inactive
XXX U 000, 001, PDI Code
PDI Code
000
Mismatch
Active
(unequipped)
PDI Code
PDI Code
PDI Code
001
PDI Code
Match
Match
Mismatch
Inactive
Inactive
Inactive
XXX U 000, 001, PDI Code
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85
PMC [ PMC-SIERRA, INC ]
