Thắc mắc khẩn cấp

Thắc mắc khẩn cấp

Chi tiết giao thức Q.933 trong các tiêu chuẩn-khuyến nghị ITU-T?

A đây rồi Q933 :

INTEGRATED SERVICES DIGITAL NETWORK
(ISDN) DIGITAL SUBSCRIBER SIGNALLING
SYSTEM No. 1 (DSS 1) ?" SIGNALLING
SPECIFICATIONS FOR FRAME MODE
SWITCHED AND PERMANENT VIRTUAL
CONNECTION CONTROL AND STATUS
MONITORING
ITU-T Recommendation Q.933
CONTENTS
Recommendation Q.933 (10/95)
Page
1 Purpose, scope and structure 1
1.1 Purpose 1
1.2 Scope 1
1.3 Structure 1
2 Overview of frame mode connection control 1
2.1 Frame mode calls 3
3 Message functional definitions and content 5
3.1 Messages for frame mode connection control 5
3.2 Messages used with global call reference 11
4 General message format and information element coding 14
4.1 Overview 14
4.2 Protocol discriminator 14
4.3 Call reference 14
4.4 Message type 14
4.5 Other information elements 15
5 Frame mode call control procedures 34
5.1 Outgoing call 35
5.2 Incoming call 40
5.3 Frame mode data transfer phase protocol 43
5.4 Call clearing 43
5.5 Restart procedures 44
5.6 Call collision 45
5.7 Handling of error con***ions 45
5.8 List of system parameters 45
Annex A ?" Ad***ional procedures for Permanent Virtual Connection (PVC) status management (using Unnumbered Information frames) 46
A.1 Messages used for PVC status 46
A.2 Information elements 47
A.3 Information elements 48
A.4 Procedures 50
A.5 Error con***ions 52
A.6 Optional bidirectional network procedures 53
A.7 System parameters 54
A.8 Annex A SDL specification 55
Annex B ?" Ad***ional procedures for permanent frame mode connection using acknowledged mode of operation 69
Annex C ?" Provision of OSI connection mode network services (NC-establishment and release phases) 69
C.1 Definitions 70
C.2 Overview 70
C.3 Network connection establishment phase 71
C.4 Network connection release phase 79

Page
Annex D ?" PICS proforma for Annex A 84
D.1 Introduction 84
D.2 Identification of the implementation 86
D.3 Identification of the protocol 87
D.4 Global statement of conformance 87
D.5 Procedures for frame relay PVC management 88
Annex E ?" Multiprotocol encapsulation over frame relay 90
E.1 Introduction 91
E.2 Frame format 91
E.3 Multiprotocol encapsulation 91
E.4 Directly connected frame relay terminal equipment 92
E.5 Network interconnect 97
Appendix I ?" Window size for a data link layer protocol 107
Appendix II ?" Ad***ional procedures for multipoint Permanent Virtual Connections (PVCs) 108
II.1 Terminology 108
II.2 Description of Multicast PVC configurations 108
II.3 Procedures for setting the Active bit of the PVC status information element 110
References 112