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Specifications for the Network Voice Protocol (NVP) (RFC0741)

IP.com Disclosure Number: IPCOM000003788D
Original Publication Date: 1977-Nov-22
Included in the Prior Art Database: 2000-Sep-13
Document File: 25 page(s) / 55K

Publishing Venue

Internet Society Requests For Comment (RFCs)

Related People

D. Cohen: AUTHOR

Abstract

Currently, computer communication networks are designed for data transfer. Since there is a growing need for communication of real-time interactive voice over computer networks, new communication discipline must be developed. The current HOST-to-HOST protocol of the ARPANET, which was designed (and optimized) for data transfer, was found unsuitable for real-time network voice communication. Therefore this Network Voice Protocol (NVP) was designed and implemented.

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NWG/RFC 741 DC 22 Nov 77 42444

SPECIFICATIONS FOR THE

NETWORK VOICE PROTOCOL (NVP)

and

Appendix 1: The Definition of Tables-Set-#1 (for LPC)

Appendix 2: Implementation Recommendations

NSC NOTE 68

(Revision of NSC Notes 26, 40, and 43)

Danny Cohen, ISI

January 29, 1976

NWG/RFC 741 DC 22 Nov 77 42444

Specifications for the Network Voice Protocol (NVP)

CONTENTS

PREFACE iii

ACKNOWLEDGMENTS iv

INTRODUCTION 2

THE CONTROL PROTOCOL 2

Summary of the CONTROL Messages 3

Definition of the CONTROL Messages 4

Definition of the and

Negotiation Tables 8

On RENEGOTIATION 10

The Header of Data Messages 10

THE LPC DATA PROTOCOL 13

EXAMPLES FOR THE CONTROL PROTOCOL 15

APPENDIX 1: THE DEFINITION OF TABLES-SET-#1 18

General Comments 20

Comments on the PITCH Table 20

Comments on the GAIN Table 21

Comments on the INDEX7 Table 21

Comments on the INDEX6 Table 21

Comments on the INDEX5 Table 21

The PITCH Table 22

The GAIN Table 24

The INDEX7 Table 25

The INDEX6 Table 26

The INDEX5 Table 27

APPENDIX 2: IMPLEMENTATION RECOMMENDATIONS 28

REFERENCES 30

Cohen [Page ii]

NWG/RFC 741 DC 22 Nov 77 42444

Specifications for the Network Voice Protocol (NVP)

PREFACE

...