1988 Ed.]
Import and Export (Strategic Commodities) Regulations
[CAP. 60
G 129
[Subsidiary]
"terminal exchange"--
(a) A local exchange used for terminating subscribers' lines;
(b) A remote switching unit which performs some functions of a local exchange
and operates under a measure of control from the parent exchange;
(c) A local exchange, typically 2-wire, used as a switching point for traffic between subordinate local exchanges, which may also provide 4-wire connections to and from the national long-distance network; or
(d) An exchange which performs any combination of functions in (a), (b) or (c)
above.
"time-division analogue exchange"-
A "time-division exchange" in which the parameter, associated with an individual segment of a stream of data or voice signals, varies continuously.
"time-division digital exchange"-
A “time-division exchange” in which the parameter, associated with an individual segment of a stream of data or voice signals, is one of a finite number of digitally coded values.
"time-division exchange"
An exchange in which segments of different streams of data or voice signals are interleaved in time and routed through the switching matrix along a common physical path. The matrix may also include one or more stages of space-division switching. The signal being routed through the matrix can be analogue (e.g. pulse amplitude modulation) or digital (e.g. pulse code modulation, delta modulation or data).
“total data signalling rate”-
The sum of the individual "data signalling rates” of all “communication channels" which:
(a) Have been provided with the system; and
(b) Can be sustained simultaneously assuming the configuration of the equipment
which would maximize this sum of rates.
"transit exchange"-
(a) An exchange typically 4-wire, used as a switching point for traffic between other exchanges in the national network (historically known as a 'trunk exchange');
(b) A 4-wire exchange serving outgoing, incoming or transit international calls; or (c) An exchange which performs any combination of functions in (a) or (b) above
or those of a "terminal exchange”.
"trunk circuit".
A circuit with associated equipments terminating in two exchanges.
"trunk exchange”-
See "transit exchange".
"wide area network”-
A data communication system which:
(a) Allows an arbitrary number of independent "data devices" to communicate
with each other;
(b) May include "local area networks”; and
(c) Is designed to interconnect geographically dispersed facilities.
9. Not used.
10. Not used.
11. Not used.
12. Not used.
1988 Ed.]
Import and Export (Strategic Commodities) Regulations
[CAP. 60
G 129
[Subsidiary]
"terminal exchange"--
(a) A local exchange used for terminating subscribers' lines;
(b) A remote switching unit which performs some functions of a local exchange
and operates under a measure of control from the parent exchange;
(c) A local exchange, typically 2-wire, used as a switching point for traffic between subordinate local exchanges, which may also provide 4-wire connections to and from the national long-distance network; or
(d) An exchange which performs any combination of functions in (a), (b) or (c)
above.
"time-division analogue exchange"-
A "time-division exchange" in which the parameter, associated with an individual segment of a stream of data or voice signals, yáries continuously.
"time-division digital exchange"-
A “time-division exchange” in which the parameter, associated with an individual segment of a stream of data or voice signals, is one of a finite number of digitally coded values.
"time-division exchange"
An exchange in which segments of/different streams of data or voice signals are interleaved in time and routed through the switching matrix along a common physical path. The matrix may also include one or more stages of space-division switching. The signal being routed through the matrix can be analogue (e.g. pulse amplitude modulation) or digital (e.g. pulse code modulation, delta modulation or data).
“total data signalling rate”-
The sum of the individual/data signalling rates” of all “communication channels" which:
(a) Have been provided with the system; and
(b) Can be sustained simultaneously assuming the configuration of the equipment
which would maximize this sum of rates.
"transit exchange"-
(a) An exchange typically 4-wire, used as a switching point for traffic between other exchanges in the national network (historically known as a 'trunk exchange');/
(b) A 4-wire ekchange serving outgoing, incoming or transit international calls; or (c) An exchange which performs any combination of functions in (a) or (b) above
or those of a "terminal exchange”.
"trunk circuit".
A circuit with associated equipments terminating in two exchanges.
"trunk exchange”-
See "transit exchange".
"wide area network”-
A data/communication system which:
(a) Allows an arbitrary number of independent "data devices" to communicate
with each other;
(b) May include "local area networks”; and
(c) Is designed to interconnect geographically dispersed facilities.
9. Not used.
10. Not used.
11. Not used.
12. Not used.
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