Ericsson W25 Bedienungsanleitung PDF herunterladen (Seite 2)

2 1/221 02-FGB 101 327 Uen A - December 2006

Contents

1 INTRODUCTION ....................................................................... 3

1.1 BACKGROUND ............................................................................. 3

2 SYSTEM OVERVIEW ................................................................ 4

2.1 CALL SETUP ................................................................................ 5

2.2 T.38 AND T30 PROTOCOL ............................................................ 5

3 ERICSSON W25 ........................................................................ 6

3.1 SIGNALING ................................................................................... 6

3.1.1 Details over the SIP Implementation .......................................... 6

3.2 SECURITY .................................................................................... 6

3.3 MEDIA STREAM ............................................................................ 6

3.3.1 Jitter Buffer ................................................................................. 6

3.3.2 Echo Canceller ........................................................................... 7

3.3.3 QoS ............................................................................................ 7

4 ACCESS NETWORK ................................................................ 8

4.1 ERICSSON SOLUTION ................................................................... 8

4.1.1 Ericsson RAN P5 ....................................................................... 8

4.1.2 Ericsson RAN P6 ....................................................................... 8

5 THE VOIP SYSTEM .................................................................. 9

5.1 ERICSSON IMT ............................................................................ 9

5.1.1 Subsystem Core ...................................................................... 10

5.1.2 PSTN Gateway ........................................................................ 12

6 CONFIGURATION ................................................................... 14

6.1.1 Command Line Interface .......................................................... 14

6.1.2 Web User Interface .................................................................. 14

7 REFERENCES ........................................................................ 15

8 ACRONYMS AND ABBREVIATIONS..................................... 16

1 2 3 4 5 6 7 ... 17 18

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Ericsson W25 Bedienungsanleitung Seite 2