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Making Measurements
Monitoring Signaling Bits
Monitoring Signaling Bits
Description
The OmniBER 718 receiver can be used to monitor the state of signaling bits in
received 2 Mb/s signals with timeslot-16 CAS multiframing (PCM30 or
PCM30CRC) and DS1 structured signals.
2.048 Mb/s Results
For 2 Mb/s signals with timeslot-16 CAS multiframing a table showing the values of
A,B,C,D signaling bits in all 30 channels is given.
DS1 Results
D4 and SLC-96 payloads
A table simultaneously showing the state of the A and B signaling bits in the 6th and
12th frames of a superframe is given. Each frame contains 24 timeslots. In SLC-96
mode A and B choices are 0, 1 or alternating. If you set bit A or B to alternate, the
displayed bit changes to an A, to indicate that the bit is alternating from 1 to 0. The
same signaling is transmitted in all channels.
ESF Payloads
A table simultaneously showing the state of the A, B, C and D signaling bits in the
6th, 12th, 18th and 24th frames of a superframe is given. Each frame contains 24
timeslots.
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