TRAFFIC CONTROL TELEPHONE SYSTEMS Circuit - Sam Hallas
TRAFFIC CONTROL TELEPHONE SYSTEMS Circuit - Sam Hallas
TRAFFIC CONTROL TELEPHONE SYSTEMS Circuit - Sam Hallas
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Line Test Set . . . . . . Designed for the purpose of making periodic<br />
line tests or locating faults which<br />
occur on the line.<br />
At Each Way Station<br />
For use where the Controller is listening continuously, one of three methods<br />
may be employed.<br />
1. One 4001-A Selector Set and<br />
One 4308-C Telephone Set<br />
or 2. One 4002-A Selector Set<br />
(Combined Selector and Telephone Set)<br />
or 3. One 4001-A Selector Set<br />
One 4311-A Telephone Set<br />
One 4001-A Foot Switch<br />
For use where the Controller is not listening continuously:-<br />
Magneto Calling<br />
Wall Mounting types<br />
Desk type Telephone<br />
1. With the addition of the 4013-A Generator either of the three<br />
methods previously described may be used.<br />
or 2. One 4001-A Selector Set Wall Mounting type<br />
One 4101-AK Telephone Set<br />
Line Loop Calling<br />
1. One 4001-B Selector Set<br />
One 4311-D Telephone Set<br />
or 2. One 4002-B Selector Set<br />
or 2. One 4002-C Selector Set<br />
4304 Type Selector<br />
Wall Mounting type<br />
Desk type Telephone<br />
Wall Mounting type<br />
A selector is required at each way station, irrespective of the type of selector<br />
set used. It is not an integral part of the selector set, and must be ordered separately.<br />
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