I-ETS 300 837 : JAN 98

Foreword
Introduction
1 Scope
  1.1 Block diagram and functional elements
  1.2 System elements outside the scope of this I-ETS
  1.3 Functional elements covered by this I-ETS
2 Normative references
3 Definitions and abbreviations
  3.1 Definitions
  3.2 Abbreviations
  3.3 Conventions
4 Functional
  4.1 Required elements
  4.2 Information streams
  4.3 Modems
  4.4 Multiplexing
  4.5 Control channel
  4.6 Video channels
  4.7 Audio channels
  4.8 Data channels
5 Terminal procedures
  5.1 Phase A - call set-up of voiceband channel
  5.2 Phase B - initial analogue telephony communication
  5.3 Phase C - establishment of digital communication,
                modem training
  5.4 Phase D - initialization
  5.5 Phase E - communication
  5.6 Phase F - end of session
  5.7 Phase G - change of communication mode and call
                clearing
6 Interoperation with other terminals
  6.1 Speech only terminals
  6.2 ETS 300 145 multimedia telephone terminals
      attached to the ISDN
  6.3 Multimedia telephone terminals over mobile radio
7 Optional enhancements
  7.1 Data facilities
  7.2 Encryption
  7.3 Multilink
8 Multipoint considerations
  8.1 Establishment of common mode
  8.2 Multipoint rate matching
  8.3 Multipoint lip synchronization
  8.4 Multipoint encryption
  8.5 Cascaded MCU operation
9 Maintenance
  9.1 Loopbacks for maintenance purposes
Annex A (normative): Protocol stack for control channel
    A.1 General
    A.2 SRP mode
    A.3 LAPM/ITU-T Recommendation V.42 mode
Annex B (normative): HDLC frame structure transparency
        for asynchronous transmission
Annex C (informative): Bit and octet order
Annex D (informative): ITU-T Recommendation V.8bis codepoints
Annex E (informative): Bibliography
History

Covers the technical requirements for very low bit-rate multimedia telephone terminals connected to the Public Switched Telephone Network (PSTN).