PM5362TUPP-PLUS
DATA SHEET
PMC-951010
ISSUE 6
SONET/SDH TRIBUTARY UNIT PAYLOAD PROCESSOR / PERFORMANCE MONITOR
set high for five or ten consecutive frames. 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
000
000
Match
000
001
Mismatch
Mismatch
Mismatch
Mismatch
Match
000
PDI Code
000
XXX ≠ 000, 001, PDI Code
001
000
001
001
001
PDI Code
Match
001
Match
XXX ≠ 000, 001, PDI Code
PDI Code
PDI Code
PDI Code
PDI Code
000
Mismatch
Match
001
PDI Code
Match
Mismatch
Mismatch
XXX ≠ 000, 001, PDI Code
000
XXX ≠ 000, 001,
PDI Code
001
Match
Match
XXX ≠ 000, 001,
PDI Code
XXX
XXX ≠ 000, 001,
PDI Code
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