ETS 300 117 : 20002
Current
The latest, up-to-date edition.
ATTACHMENTS TO THE PUBLIC SWITCHED TELEPHONE NETWORK (PSTN) - CATEGORY II ATTACHMENT REQUIREMENTS FOR 2400 BITS PER SECOND DUPLEX MODEMS STANDARDIZED FOR USE ON THE PSTN (CANDIDATE NET 23)
Hardcopy , PDF
English
Foreword
1 Scope
2 Normative references
3 Definitions and abbreviations
3.1 Definitions
3.2 Abbreviations
4 General requirements
4.1 References to other ETSs
4.2 Information to be provided by the applicant
5 Functional requirements specific to Category II
modems
5.1 General requirements
5.2 Modes
5.3 Line signals
5.4 Line signalling rates
5.5 Encoding and decoding of data
5.6 Threshold of the received line signal detector
5.7 Channel allocation
5.8 Hand-shaking sequences
5.9 Transmission of start-stop characters
5.10 Scrambler and de-scrambler
5.11 Test loop 2
Annex A (normative): Testing methods
A.1 General testing conditions
A.2 Test for subclause 5.3.1 (Carrier frequencies)
A.3 Test for subclause 5.3.2 (Guard tone)
A.4 Test for subclause 5.4 (Line signalling rates)
A.5 Test for subclause 5.5 (Encoding and decoding of
data)
A.6 Test for subclause 5.6 (Threshold of received
line signal detector)
A.7 Test for subclause 5.7 (Channel allocation)
A.8 Test for subclause 5.8 (Hand-shaking sequences)
A.9 Test for subclause 5.10 (Scrambler and
de-scrambler)
A.10 Test for subclause 3.11 (Test loop 2)
Annex B (informative): Derivation of timings
Annex C (informative): Example proforma for the
declaration of modes of
operation/use
Annex D (informative): Bibliography
History
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