Disable all overwrites, Default all oh – EXFO FTB/IQS-88000 Series Power Blazer for FTB-2/2Pro/500/IQS-600 User Manual
Page 484
Test Functions
472
FTB/IQS-88000 Series
OH - SONET/SDH
Z7 /K4 : Extended signal label
Disable all Overwrites
Clear the Overwrite check box for all TX bytes. Only available with
SONET/SDH BERT test application in Through Intrusive and Through
Intrusive with Block & Replace topologies.
Default all OH
Returns all TX overhead bytes to their factory default values.
Bits
Description
Z7 (SONET)
K4 (SDH)
1
Extended signal label. Bits 12 to 19 of the 32 bit frame multiframe (see Z7/K4 Structure on page 470)
contain the extended signal label.
2
Virtual concatenation. Bits 1 to 5 of the 32 bit frame multiframe (see Z7/K4 Structure on page 470)
contain the LO virtual concatenation frame count while bits 6 to 11 contain the LO virtual
concatenation sequence indicator.
3 - 4
unassigned and reserved for APS signaling for protection at the lower order path level.
5 - 7
These bits in combination with bit 8 of V5 are
allocated for RDI -V/ERDI-V signal
Optional use.
8
unassigned and reserved for a lower order path data link.
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