BS 7362:1990

Withdrawn

Specification for telex terminal apparatus for connection to public telecommunications operators\' telex networks

Available format(s)

Hardcopy , PDF

Withdrawn date

02-08-2013

Language(s)

English

Published date

30-11-1990

Publisher

British Standards Institution

Foreword
Committees responsible
Specification
1. Scope
2. Abbreviations and definitions
3. TTA categories
4. General
5. Line interface
6. Signalling
7. Outgoing calls
8. BSP signals during message transmission
9. Automatic repeat attempts
10. Incoming call
11. Call clearing
12. Intermediate telex terminal apparatus (I-TTA)
13. Marking
14. Instructions for use
Appendices
A. Information to be provided by the supplier for
     test purposes
B. General conditions for test
C. Standard test procedures
D. General tests
E. Modem tests
Tables
1. Requirements and features specific to TO-TTA,
     RO-TTA, RT-TTA and FE-TTA
2. Message storage and security features specific
     to RT-TTA and RO-TTA
3. Power and voltage levels
4. Telegraph characters
5. Tolerances
6. Exchange simulator transmission
7. Exchange simulator transmission
Figures
1. Power and voltage limit curves
2. Measurement of longitudinal output
3. Exchange simulator transmission: PTS discrimination
     and commencement of selection
4. Exchange simulator transmission: call collision
     and response to WRV signal
5. Exchange simulator transmission: commencement of
     SPC selection
6. Measurement of transmit distortion
7. Deviation of d.c. wetting current
8. SCVF I-TTA automatic changeover
9. Test circuit for measuring transmit frequency and
     output signal power
10. Measurement of receiver margin
11. Measurement of received signal level
12. Receive signal level attenuation
13. Measurement of return loss and transverse power
     level limits
14. Measurement of longitudinal conversion loss
15. Transverse conversion loss
16. Measurement of DC resistance

Requirements to ensure compatibility with UK public telecommunications operators and other terminals connected to telex networks.

Committee	TCT/301
DevelopmentNote	Supersedes 89/94411 DC (09/2005) Inactive for the new design. (01/2011)
DocumentType	Standard
Pages	56
PublisherName	British Standards Institution
Status	Withdrawn

BS 6623-1:1985	DTE/DCE interface connectors and pin assignments Specification for 25-pin connector (ISO DIS 2110 and DAD 1)
BS 6403:1983	Specification for simple telex terminals using single channel voice frequency signalling for connection to British Telecommunications telex network
EN 41003:2008	Particular safety requirements for equipment to be connected to telecommunication networks and/or a cable distribution system