ETS 300 221 : 20001
Current
The latest, up-to-date edition.
TERMINAL EQUIPMENT (TE): SYNTAX-BASED VIDEOTEX LOWER LAYER PROTOCOLS USING PACKET MODE ACCESS OVER THE PUBLIC SWITCHED TELEPHONE NETWORK (PSTN)
Hardcopy , PDF
English
Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
4 Overview
5 Configurations
6 General model
7 Service definition
7.1 Introduction
7.2 Kernel services
8 Protocol
9 Coding
10 Use of CCITT Recommendation X.3 parameters
11 Bearer Independent Service (BIS) for syntax-based
Videotex over PSTN
12 Lower layers
12.1 Layer 3 protocols
12.2 Layer 2
12.3 Layer 1 protocol
13 Asynchronous interface
Annex A (informative): Examples of configurations
A.1 Symbols
A.2 Connection to a Videotex Host (VH)
A.3 Access to a Videotex Service (VS) via a Videotex
Access Point (VAP)
A.4 Host to terminal call establishment
A.5 Terminal to terminal communication
Annex B (informative): Usage of supplementary services
Annex C (normative): Terminal function basic state
Annex D (informative): The SBV_Escape service
Annex E (informative): Extended data forwarding signals
Annex F (normative): BIS constraints on ISO 8208 PICS
Annex G (normative): perating sequences for CCITT
Recommendation V.29 short turn
around
G.1 Turn-ON sequence at 9 600/7 200 bits per second
G.2 Turn-ON sequence at 4 800/2 400 bits per second
G.3 Turn-OFF sequence
G.4 Circuit 109
G.5 Circuit 106
History
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