G 128 CAP. 60]
Import and Export (Strategic Commodities) Regulations
[1988 Ed.
[Subsidiary]
"space-division digital exchange"---
A "space-division exchange" which accommodates the transmission through the switching matrix of digital signals requiring a bandwidth wider than a voice channel of 3,100 Hz as defined in CCITT Recommendation G. 151.
N.B.
A "space-division digital exchange" can be converted to a "space division analogue exchange" by modifying some or all of the input interface circuitry.
"space-division exchange”-
An exchange in which different streams of data of voice signals are routed through the switching matrix along physically different paths. The signal being routed through the matrix can be analogue (e.g. conventional amplitude modulation, pulse amplitude modulation) or digital (e.g. pulse code modulation, delta modulation or data).
"specially designed software"
The minimum "operating systems", "diagnostic systems", "maintenance systems" and "application software" necessary to be executed on a particular equipment to perform the function for which it was designed. To make other, incompatible equipment perform the same function requires:
(a) Modification of this "software"; or
(b) Addition of "programmes".
"stored-programme-controlled circuit switching”—
The technique for establishing, on demand and until released, a direct (space-division switching) or logical (time-division switching) connection between circuits based on switching control Information derived from any source or circuit and processed according to the stored "programme" by one or more electronic computers.
"stored-programme-controlled telegraph circuit switching"-
Techniques essentially identical to those for "stored-programme-controlled telephone circuit switching", for establishing connections between telegraph (e.g. telex) circuits based solely on a subscriber-type of signalling information.
"stored-programme-controlled telephone circuit switching"----
The technique for establishing within an exchange, on demand and until released, an exclusive direct (space-division switching) or logical (time-division switching) connection between calling and called telephone circuits:
(a) Based solely on a subscriber-type of telephone signalling information, derived from the calling circuit; and
(b) Processed according to the stored "programmes" by one or more electronic computers.
The telephone circuits may carry any type of signal, e.g. telephone or telex, compatible with a voice channel bandwidth of 3,100 Hz or less.
"terminal device*-
A "data device" which:
(a) Does not include process control sensing and actuating devices; and
(b) Is capable of:
(1) Accepting or producing a physical record;
(2) Accepting a manual input; or
(3) Producing a visual output.
N.B.:
Normal groupings of such equipment (e.g. a combination of paper tape punch/reader and printer), connected to a single data channel or “communication channel", shall be considered as a single "terminal device".
G 128 CAP. 60]
Import and Export (Strategic Commodities) Regulations
[1988 Ed.
[Subsidiary]
"space-division digital exchange"---
A "space-division exchange" which accommodates the transmission through the switching matrix of digital signals requiring a bandwidth wider than a voice channel of 3 100 Hz as defined in CCITT Recommendation G. 151.
N.B.
A "space-division digital exchange" can be converted to a "space division analogue exchange" by modifying some or all of the input interface circuitry.
"space-division exchange”-
An exchange in which different streams of data of voice signals are routed through the switching matrix along physically different paths. The signal being routed through the matrix can be analogue (e.g. conventional amplitude modulation, pulse amplitude modulation) or digital (é.g. pulse code modulation, delta modulation or data).
"specially designed software"
The minimum "operating systems", "diagnostic systems", "maintenance systems" and "application software" necessary to be executed on a particular equipment to perform the function for which it was designed. To make other, incompatible equipment perform the same function requires:
(a) Modification of this "software); or
(b) Addition of "programmes".
"stored-programme-controlled circuit switching”—
The technique for establishing, on demand and until released, a direct (space- division switching) or logical time-division switching) connection between circuits based on switching control Information derived from any source or circuit and processed according to the stored "programme" by one or more electronic computers.
"stored-programme-controlled telegraph circuit switching"-
Techniques essentially identical to those for "stored-programme-controlled tele- phone circuit switching, for establishing connections between telegraph (e.g. telex) circuits based solely or a subscriber-type of signalling information.
"stored-programme-controlled telephone circuit switching"----
The technique for establishing within an exchange, on demand and until released, an exclusive direct space-division switching) or logical (time-division switching) connection between calling and called telephone circuits:
(a) Based solely on a subscriber-type of telephone signalling information, derived
from the calling circuit; and
(6) Processed according to the stored "programmes" by one or more electronic
computers.
The telephone circuits may carry any type of signal, e.g. telephone or telex, compatible with a voice channel bandwidth of 3 100 Hz or less.
"terminal device*-
A "data device" which:
(a) Does not include process control sensing and actuating devices; and
(b) Is capable of:
(1) Accepting or producing a physical record;
(2) Accepting a manual input; or
(3) Producing a visual output.
NB:
Normal groupings of such equipment (e.g. a combination of paper tape punch/reader and printer), connected to a single data channel or “communication channel", shall be considered as a single "terminal device".
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