Wavetek ANT-20 Manual de usuario

BN 3035/98.36

ANT-20, ANT-20E

Advanced Network Tester

Concatenated Mappings

OC-12c/STM-4c

OC-48c/STM-16c

BN 3035/90.90 bis 3035/90.93

Software Version 7.20

Operating Manual

Please direct all enquiries to your

local Wavetek Wandel Goltermann sales

company. The addresses are given at the

end of this handbook.

Copyrights

This product orparts of it are based upon

Recommendations and/or Standards of the

Standardization Sector of the International

Telecommunication Union- ITU-T and/or of the

European Telecommunications Standards Institute -

ETSI. These Recommendations and Standards are

subject to copyrights of these organizations. Without

written permission of the ITU-T and/or ETSI it isnot

permitted to copy ITU-T Recommendations or ETSI

standards or parts thereof and/or make them available

to third parties.

Wavetek Wandel Goltermann

Eningen GmbH & Co.

Mühleweg 5, 72800 Eningen u. A.

Author: MDD/TD

Translator: JohnNutley

Order no.: 3035/98.36

Edition: 05/00.07(V 7.20)

Previous Edition:

04/00.04(V7.1)

Subject to change without notice.

Our normal guarantee and delivery

terms apply.

Printed in Germany

ANT-20/ANT-20E Concatenation Options

Contents

Introduction

1 Concatenation options. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-1

1.1 OC-12c/STM-4c options . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-1

1.2 OC-48c/STM-16c options . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-2

2 Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-3

2.1 OC-12c/STM-4c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-3

2.1.1 OC-12c/STM-4c TEST ERROR (BULK);

(Contiguous Concatenation Mapping). . . . . . . . . . . . . . . . . . .I-4

2.1.2 OC-12c/STM-4c ATM TESTING

(Contiguous Concatenation Mapping). . . . . . . . . . . . . . . . . . .I-5

2.1.3 OC-12v/STM-4v VIRTUAL CONCATENATION

(Virtual Concatenation Mapping). . . . . . . . . . . . . . . . . . . . . . .I-5

2.2 OC-48c/STM-16c . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-6

2.2.1 OC-48c/STM-16c ERROR TEST (BULK);

(Contiguous Concatenation Mapping). . . . . . . . . . . . . . . . . . .I-8

2.2.2 OC-12c/STM-4c ERROR TEST (BULK);

(Contiguous Concatenation Mapping). . . . . . . . . . . . . . . . . . .I-8

2.2.3 OC-12c/STM-4c ATM TESTING

(Contiguous Concatenation Mapping). . . . . . . . . . . . . . . . . . .I-9

3 Operation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .I-10

Specifications OC-12c/STM-4c

1 Generator section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-1

1.1 Digital signal output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-1

1.1.1 Signal output [18], optical . . . . . . . . . . . . . . . . . . . . . . . . . . .S-1

1.2 Clock generation and bit rates. . . . . . . . . . . . . . . . . . . . . . . .S-2

1.2.1 Clock generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-2

1.2.2 Bit rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-2

1.3 SDH and SONET Tx signals. . . . . . . . . . . . . . . . . . . . . . . . .S-2

1.3.1 OC-12c/STM-4c Tx signal. . . . . . . . . . . . . . . . . . . . . . . . . . .S-2

1.3.2 Scrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-2

1.3.3 Overhead generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-3

1.3.3.1 Section overhead (SOH), Transport overhead (TOH). . . . . .S-3

Concatenation Options ANT-20/ANT-20E

1.3.4 VC-4c path overhead (POH), high-order . . . . . . . . . . . . . . . S-4

1.3.4.1 Contiguous concatenation (VC-4-4c) . . . . . . . . . . . . . . . . . . S-4

1.3.4.2 Virtual concatenation (VC-4-4v) . . . . . . . . . . . . . . . . . . . . . . S-5

1.3.5 Generation of pointer actions . . . . . . . . . . . . . . . . . . . . . . . . S-5

1.3.5.1 Contiguous concatenation . . . . . . . . . . . . . . . . . . . . . . . . . . S-5

1.3.5.2 Virtual concatenation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-6

1.3.6 OC-12c/STM-4c anomaly insertion. . . . . . . . . . . . . . . . . . . . S-7

1.3.7 OC-12c/STM-4c defect generation. . . . . . . . . . . . . . . . . . . . S-9

1.4 Payload generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

1.4.1 BULK signal generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

1.4.1.1 Payload. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

1.4.1.2 Bit patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

1.4.1.3 Anomaly insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-10

1.4.2 ATM generator section . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-11

1.4.2.1 Scrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-11

1.4.2.2 Anomaly insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-11

1.4.2.3 Defect generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-12

1.4.2.4 Test channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-12

1.4.2.5 Background load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-13

1.4.2.6 Fill cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-13

1.4.2.7 AAL-1 segmentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-13

2 Receiver section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-14

2.1 Digital signal inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-14

2.1.1 Signal input [17], optical . . . . . . . . . . . . . . . . . . . . . . . . . . . S-14

2.1.2 Signal input [16], electrical . . . . . . . . . . . . . . . . . . . . . . . . . S-15

2.1.3 Clock recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-15

2.2 SDH and SONET Rx signals . . . . . . . . . . . . . . . . . . . . . . . S-15

2.2.1 OC-12c/STM-4c Rx signal . . . . . . . . . . . . . . . . . . . . . . . . . S-15

2.2.2 Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-15

2.3 Measurement modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-16

2.3.1 Evaluation of section overhead (SOH),

transport overhead (TOH). . . . . . . . . . . . . . . . . . . . . . . . . . S-16

2.3.2 Evaluation of path overhead (POH) . . . . . . . . . . . . . . . . . . S-16

2.3.2.1 Contiguous concatenation . . . . . . . . . . . . . . . . . . . . . . . . . S-16

2.3.2.2 Virtual concatenation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-17

2.3.3 Measurement of AU pointer actions . . . . . . . . . . . . . . . . . . S-17

2.3.4 Anomaly measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . S-18

ANT-20/ANT-20E Concatenation Options

iii

2.3.5 Defect detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-19

2.4 Payload . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.1 BULK signal receiver. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.1.1 Bit pattern payloads. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.1.2 Anomaly measurements . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.1.3 Defect detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.2 ATM receiver section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.2.1 Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-21

2.4.2.2 Measurement modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-22

2.4.2.3 Anomaly measurements . . . . . . . . . . . . . . . . . . . . . . . . . . .S-22

2.4.2.4 Defect detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-22

2.4.2.5 ATM performance measurements. . . . . . . . . . . . . . . . . . . .S-23

2.4.3 User channel analysis and load measurement . . . . . . . . . .S-23

2.4.3.1 AAL-1 reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-25

Specifications OC-48c/STM-16c

1 Generator section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-27

1.1 Digital signal output. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-27

1.1.1 Signal output [47], optical . . . . . . . . . . . . . . . . . . . . . . . . . .S-27

1.1.2 Signal output [46], electrical . . . . . . . . . . . . . . . . . . . . . . . .S-28

1.2 Clock generator and bit rates . . . . . . . . . . . . . . . . . . . . . . .S-28

1.2.1 Clock generation internal. . . . . . . . . . . . . . . . . . . . . . . . . . .S-28

1.2.2 Clock generation external [45]. . . . . . . . . . . . . . . . . . . . . . .S-28

1.2.3 Bit rate. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-28

1.3 SDH and SONET TX signals. . . . . . . . . . . . . . . . . . . . . . . .S-29

1.3.1 OC-48c/STM-16c TX signals. . . . . . . . . . . . . . . . . . . . . . . .S-29

1.3.2 Scrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-29

1.3.3 Overhead generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-30

1.3.3.1 Section overhead (SOH), Transport overhead (TOH). . . . .S-30

1.3.4 Path overhead (POH), high-order . . . . . . . . . . . . . . . . . . . . S-32

1.3.4.1 Contiguous concatenation. . . . . . . . . . . . . . . . . . . . . . . . . .S-32

1.3.5 Generation of pointer actions . . . . . . . . . . . . . . . . . . . . . . .S-33

1.3.5.1 Contiguous concatenation. . . . . . . . . . . . . . . . . . . . . . . . . .S-33

1.3.6 OC-48c/STM-16c anomaly insertion. . . . . . . . . . . . . . . . . .S-33

1.3.7 OC-48c/STM-16c defect generation . . . . . . . . . . . . . . . . . .S-34

Concatenation Options ANT-20/ANT-20E

1.4 Payload generation. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-35

1.4.1 BULK signal generator . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-35

1.4.1.1 Payload. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-35

1.4.1.2 Bit patterns . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-35

1.4.1.3 Anomaly insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-35

1.4.2 ATM generator for STS-12c SPE/VC-4-4c container . . . . . S-36

1.4.2.1 Scrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-36

1.4.2.2 Anomaly insertion . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-36

1.4.2.3 Defect generation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-37

1.4.2.4 Test channel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-37

1.4.2.5 Background load. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-38

1.4.2.6 Fill cells. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-38

1.4.2.7 AAL-1 segmentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-38

2 Receiver section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-39

2.1 Digital signal inputs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-39

2.1.1 Signal input [44], optical . . . . . . . . . . . . . . . . . . . . . . . . . . . S-39

2.1.2 Signal input [43], electrical . . . . . . . . . . . . . . . . . . . . . . . . . S-40

2.1.3 Clock output [42]. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-40

2.1.4 Clock recovery . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-40

2.2 SDH and SONET RX signals . . . . . . . . . . . . . . . . . . . . . . . S-41

2.2.1 OC-48c/STM-16c RX signal . . . . . . . . . . . . . . . . . . . . . . . . S-41

2.2.2 Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-41

2.3 Measurement modes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-41

2.3.1 Evaluation of section overhead (SOH),

transport overhead (TOH). . . . . . . . . . . . . . . . . . . . . . . . . . S-41

2.3.2 Evaluation of path overhead (POH) . . . . . . . . . . . . . . . . . . S-42

2.3.2.1 Contiguous concatenation . . . . . . . . . . . . . . . . . . . . . . . . . S-42

2.3.3 Measurement of AU pointer actions . . . . . . . . . . . . . . . . . . S-43

2.3.4 Anomaly measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . S-44

2.3.5 Defect detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-45

2.4 Payload. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-46

2.4.1 BULK signal receiver . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-46

2.4.1.1 Bit pattern payloads . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-46

2.4.1.2 Anomaly measurements. . . . . . . . . . . . . . . . . . . . . . . . . . . S-46

2.4.1.3 Defect detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . S-46

ANT-20/ANT-20E Concatenation Options

2.4.2 ATM receiver section. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-46

2.4.2.1 Descrambling . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-46

2.4.2.2 Measurement modes. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-47

2.4.2.3 Anomaly measurements . . . . . . . . . . . . . . . . . . . . . . . . . . .S-47

2.4.2.4 Defect detection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-47

2.4.2.5 ATM performance measurements. . . . . . . . . . . . . . . . . . . .S-48

2.4.3 User channel analysis and load measurement . . . . . . . . . .S-48

2.4.3.1 AAL-1 reassembly. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .S-50

Concatenation Options ANT-20/ANT-20E

Notes:

ANT-20/ANT-20E Concatenation Options

Introduction I-1

Introduction

1 Concatenation options

1.1 OC-12c/STM-4c options

Modern bandwidth capacity requirements (e.g. Internet) have led to the setting up of networks

with transmission capacities of up to 600 Mbit/s. These networks use concatenated containers

from the SDH and SONET signal structures. The two methods of concatenation used are known

as contiguous concatenation and virtual concatenation. One of the main applications for

OC-12c or STM-4c signals is ATM. More and more OC-12c or STM-4c interfaces are being

used in ATM exchange switches.

The “OC-12c/STM-4c” options for the ANT-20 allow you to test backbones, single connections

or network elements. The options extend the main applications and instruments of the ANT-20

to cover these signal structures.

The following options are available:

•OC-12c/STM-4c ERROR TEST (BULK) (BN 3035/90.90)

•OC-12c/STM-4c ATM TESTING (BN 3035/90.91)

•OC-12v/STM-4v VIRTUAL CONCATENATION (BN 3035/90.92)

The “OC-12c/STM-4c ERROR TEST (BULK)” option can be used to test the performance of

transmission paths. All of the ANT-20 analyzers can be used at the same time. Overhead

Analyzer, Pointer Analyzer, Anomaly/Defect Analyzer, Jitter Analyzer and Performance

Analysis allow correlation of the measurement results.

The “OC-12c/STM-4c ATM TESTING” option extends the applications of the ATM Module,

BN 3035/90.70.

These two options are used to test the paths and network elements used for contiguous

concatenation.

The “OC-12v/STM-4v VIRTUAL CONCATENATION” option extends the ANT-20 to cover this

multiplexing and transmission method, which can be used by telecoms service providers to

transmit concatenated VC-4 containers over existing SDH networks.

Concatenation Options ANT-20/ANT-20E

I-2 Introduction

1.2 OC-48c/STM-16c options

Modern bandwidth capacity requirements (e.g. Internet) have led to the setting up of networks

with transmission capacities of up to 2400 Mbit/s. These networks use concatenated containers

from the SDH and SONET signal structures. One main application for OC-48c or STM-16c

signals is for mapping STS-12c SPE or VC-4-4c containers that are filled with ATM signals. The

use of OC-12c or STM-4c interfaces in ATM switches and the transmission of signals via

OC-48 or STM-16 is becoming more common.

The “OC-48c/STM-16c” options for the ANT-20 allow you to test backbones, single connections

or network elements. The options extend the main applications and instruments of the ANT-20

to cover these signal structures.

The following options are available:

•OC-12c/STM-4c ERROR TEST (BULK) (BN 3035/90.90)

•OC-12c/STM-4c ATM TESTING (BN 3035/90.91)

•OC-48c/STM-16v ERROR TEST (BULK) (BN 3035/90.93)

The “OC-12c/STM-4c ERROR TEST (BULK)” option and the “OC-48c/STM-16c ERROR TEST

(BULK)” option can be used to test the performance of transmission paths. All of the ANT-20

analyzers can be used at the same time. Overhead Analyzer, Pointer Analyzer, Anomaly/Defect

Analyzer, Jitter Analyzer and Performance Analysis allow correlation of the measurement

results.

The “OC-12c/STM-4c ATM TESTING” option extends the applications of the ATM Module,

BN 3035/90.70.

These three options are used to test the paths and network elements used for contiguous

concatenation.

Otros manuales para ANT-20

Este manual sirve para los siguientes modelos

Tabla de contenidos

Otros manuales de Equipo de prueba de Wavetek