PM5363 TUPP+622
TUPP+622
DATASHEET
PMC-1981421
ISSUE 4
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR FOR 622 MBIT/S
INTERFACES
error indications (REIs) are detected by extracting the REI 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 multiframes. In TU3 mode, RDI is recognized
when bit 5 of the G1 byte is set high for five or ten consecutive frames. Bit 5 of
the G1 byte is similarly processed for the status of the auxiliary RDI state. The
RDI and RFI bits, and similarly bits 4 and 5 of a TU3 stream, 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. (C2 in TU3 mode). 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
is determined by the following:
Table 1
- Path Signal Label Mismatch State
Expected PSL
Accepted PSL
PSLM State
UNEQ State
000
000
000
000
000
001
PDI Code
Match
Inactive
Inactive
Inactive
Inactive
Active
Inactive
Inactive
Inactive
Active
Mismatch
Mismatch
Mismatch
Mismatch
Match
XXX ≠ 000, 001, PDI Code
000
001
PDI Code
001
001
001
001
Match
Match
XXX ≠ 000, 001, PDI Code
000
001
PDI Code
PDI Code
Mismatch
Match
Inactive
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102
PMC [ PMC-SIERRA, INC ]
