Table Of Contents - Wavetek ANT-20 Operating Manual

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ANT-20/ANT-20E
Contents
1
STM-1 Mapping . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
1.1
General information. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-1
1.2
Tributary channel numbering. . . . . . . . . . . . . . . . . . . . . . . . . S-2
1.3
Scrambling/Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . S-2
1.4
Overhead generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-3
1.4.1
Section Overhead (SOH) . . . . . . . . . . . . . . . . . . . . . . . . . . . S-3
1.4.2
STM-1 error insertion (anomalies). . . . . . . . . . . . . . . . . . . . . S-4
1.4.3
STM-1 alarm generation (defects). . . . . . . . . . . . . . . . . . . . . S-5
1.4.4
Pointer action generation . . . . . . . . . . . . . . . . . . . . . . . . . . . S-6
1.4.5
STM-1 error measurements (anomalies) . . . . . . . . . . . . . . . S-9
1.4.6
STM-1 alarm detection (defects) . . . . . . . . . . . . . . . . . . . . . S-10
1.4.7
Measurement of AU and TU pointer actions . . . . . . . . . . . . S-11
1.4.8
VC-4 Path Overhead (POH), High Order . . . . . . . . . . . . . . S-12
1.4.9
VC-3 Path Overhead (POH), High Order . . . . . . . . . . . . . . S-13
1.4.10
1.5
C-12 mapping (2 Mbit/s in STM-1, AU-3/AU-4). . . . . . . . . . S-15
1.5.1
VC-12 Path Overhead contents . . . . . . . . . . . . . . . . . . . . . S-16
1.5.2
VC-12 error insertion (anomalies) . . . . . . . . . . . . . . . . . . . . S-16
1.5.3
VC-12 alarm generation (defects) . . . . . . . . . . . . . . . . . . . . S-17
1.5.4
VC-12 error measurements (anomalies) . . . . . . . . . . . . . . . S-17
1.5.5
VC-12 alarm detection (defects) . . . . . . . . . . . . . . . . . . . . . S-18
1.5.6
VC-12 Path Overhead evaluation . . . . . . . . . . . . . . . . . . . . S-18
1.6
C-3 mapping (34/45 Mbit/s in STM-1, AU-3/AU-4) . . . . . . . S-19
1.6.1
VC-3 Path Overhead contents (Low Order) . . . . . . . . . . . . S-20
1.6.2
VC-3 error insertion (anomalies) . . . . . . . . . . . . . . . . . . . . . S-20
1.6.3
VC-3 alarm generation (defects) . . . . . . . . . . . . . . . . . . . . . S-21
1.6.4
VC-3 error measurement (anomalies). . . . . . . . . . . . . . . . . S-21
1.6.5
VC-3 alarm detection (defects) . . . . . . . . . . . . . . . . . . . . . . S-22
1.6.6
VC-3 Path Overhead evaluation . . . . . . . . . . . . . . . . . . . . . S-22
1.7
C-4 mapping (140 Mbit/s in STM-1/STS-3c) . . . . . . . . . . . . S-23
STM-1 mapping
i

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