BS 7362:1990
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
Specification for telex terminal apparatus for connection to public telecommunications operators\' telex networks
Hardcopy , PDF
02-08-2013
English
30-11-1990
Important note : All end users must be registered with an Account prior to user licenses being assigned.
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Withdrawn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 |
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