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Selecting Test Features
Setting PDH Spare Bits
Setting PDH Spare Bits
Description
Certain Spare Bits will cause the occurrence of a minor alarm when received as a
logical "0".:
140 Mb/s - FAS Bit 14
34 Mb/s - FAS Bit 12
8 Mb.s - FAS Bit 12
2 Mb/s - NFAS Timeslot (timeslot 0 of NFAS frame) Bit 0
1 If SDH interface is chosen, set up the SDH transmit interface and payload
HOW TO:
required. See "Setting SDH Transmit Interface " page 29.
If PDH interface is chosen, set up the PDH transmit interface and payload
required. See "Setting PDH/DSn Transmit Interface (option 012) " page 26.
2 Set the value of the spare bits required for testing.
If a BIT SEQUENCE is required, choose SEND SEQUENCE
the sequence.
86
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to transmit
ON
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