ETR 195 : 20001

Foreword
1 Scope
2 References
3 Definitions
4 Abbreviations
5 Definition of a fax-switch
6 Fax-switch technical descriptions submitted to date
7 Technical principles
   7.1 CNG detection
   7.2 Alternative ringing cadences - network based solution
8 Behaviour of a calling facsimile machine
   8.1 Emission of CNG - event stopping CNG emission
   8.2 Emission of CNG for the manual facsimile calls
   8.3 Post-dialling delay - delay to receive the answer
        signal
   8.4 T1 timer at the emitting side
9 Announcement emitted by the called side
   9.1 Necessity of an announcement
   9.2 Announcement emission along with CNG detection
10 Precise descriptions of the fax-switch operation
11 Identification of the main differences between the
   different sequences
   11.1 Time before OGM 1
   11.2 Duration of OGM 1
   11.3 Delay to detect CNG
   11.4 Detection of CNG before, after or/and during OGM 1
   11.5 Maximum time the calling user is left in silence
        throughout the operation
   11.6 Time to connect facsimile application as default mode
   11.7 Performances of the CNG detection
12 Synthesis of main differences between descriptions,
   possible harmonization
   12.1 Synthesis of main differences
   12.2 Possible harmonization within profiles
   12.3 Fax-switch when the user is present - fax-switch when
        the user is absent
13 Aspects related to the source of announcement
   13.1 Source of announcement
   13.2 Case of external announcement source
   13.3 Line power consumption in case of external source
        announcement
14 Aspects related to the telephone service
   14.1 Ability to connect the telephone application
15 Extensions
16 Conclusion
History

Recognizes the various technical proposals which have been proposed to date within TC-TE and ITU-T Study Group 8 (SG8) and identifies the common points and differences between the proposals.