Test Functions
NetBlazer 515
Pointer Adjustment
RX Pointer Adjustment
Pointer Value
For STS/AU: Displays the value for the pointer, H1 and H2, indicating the
offset in bytes between the pointer and the first byte of the STS-n
(SONET) or AU-n (SDH).
For VT/TU: Displays the value of the pointer, V1 and V2, indicating the
offset in bytes between the pointer and the first byte of the VTn
(SONET) or TU-n (SDH) of the high order path. However, TU-3
considered a low order path, uses the H1, H2, H3 bytes for its location.
Cumulative Offset indicates the difference between the pointer
increment and the pointer decrement. A pointer jump will reset this
value to 0.
Ptr. Incr. (Pointer Increment) gives statistics on positive pointer
adjustment detected.
Ptr. Decr. (Pointer Decrement) gives statistics on negative pointer
adjustment detected.
NDF (New Data Flag) gives statistics on pointer jumps containing a
New Data Flag.
For STS/AU: Bits 1 to 4 of the pointer word (H1 and H2) detected are
“1001”.
For VT/TU: Bits 1 to 4 of the pointer word (V1 and V2) detected are
“1001”.
No NDF (No New Data Flag) gives statistics on normal pointer jumps
containing no NDF.
For STS/AU: Bit 1 to 4 of the pointer word (H1 and H2) detected are
“0110”.
For VT/TU: Bit 1 to 4 of the pointer word (V1 and V2) detected are
“0110”.
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