IEC 62056-42-2002

【实例简介】IEC 62056-42-2002

CONTENTS

FOREWORD 4

1. 1 Scope 5
2. 2 Normative references 5
3. 3 Terms, definitions and abbreviations 6
4. 4 Overview 7
5. 5 Service specification 8
1. 5.1 List of services 8
1. 5.1.1 Connection estabIishment/reIease reIated services 8
2. 5.1.2 Data communication services 8
3. 5.1.3 Layer management services 8
2. 5.2 Use of the physicaI Iayer services 9
3. 5.3 Service definitions 9
1. 5.3.1 PH-CONNECT.request 9
2. 5.3.2 PH-CONNECT.indication 10
3. 5.3.3 PH-CONNECT.confirm 10
4. 5.3.4 PH-ABORT.request 11
5. 5.3.5 PH-ABORT.confirm 11
6. 5.3.6 PH-ABORT.indication 11
7. 5.3.7 PH-DATA.request 12
8. 5.3.8 PH-DATA.indication 12
9. 6 ProtocoI specification 13
4. 6.1 PhysicaI Iayer protocoI data unit 13
5. 6.2 Transmission order and characteristics 13
6. 6.3 PhysicaI Iayer operation – description of the procedures 13
1. 6.3.1 GeneraI 13
2. 6.3.2 Setting up a physicaI connection 14
3. 6.3.3 The identification service 15
4. 6.3.4 Data communications 19
5. 6.3.5 Disconnection of an existing physicaI connection 19

Annex A (informative) An exampIe: PH service primitives and Hayes commands 20

Annex B (informative) Data modeI and protocoI 25

BibIiography 26

Figure 1 – TypicaI PSTN configuration 7

Figure 2 – The Iocation of the physicaI Iayer 8

Figure 3 – ProtocoI Iayer services of the COSEM 3-Iayer connection oriented profiIe 9

Figure 4 – MSC for physicaI connection estabIishment 15

Figure 5 – MSC for IDENTIFY.request/.response message exchange 17

Figure 6 – HandIing the identification service at the COSEM server side 17

Figure 7 – PartiaI state machine for the cIient side physicaI Iayer 18

Figure A.1 – MSC for physicaI connection request 20

Figure A.2 – PhysicaI connection estabIishment at the CALLING station 21

Figure A.3 – MSC for physicaI connection estabIishment 22

Figure A.4 – Data exchange between the caIIing and caIIed stations 23

Figure A.5 – MSC for a physicaI disconnection 24

Figure B.1 – The three-step approach of COSEM 25

【实例截图】