Junctor
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A junctor is a circuit used in analog
1ESS switch
and other switches.
In early electromechanical switches, a "district junctor" handled supervision and
5XB switch, junctors only consisted of three wires to connect the two legs of a call: the line and the trunk,[2]
of which the latter supplied all talk battery and supervision.
Stored-program analog switches such as the
three-way calling
was introduced, three-port conference trunks were used, which only appeared on trunk nets. All junctors appeared in subgroups of sixteen on plugs or jacks at the Junctor Grouping Frame, where as many subgroups as required were plugged into other trunk nets, line nets, or circuit junctor frames.
References
- Bell System Technical Journal. 19 (1): 90.
- ^ Bell Telephone Laboratories (1949). No. 5 Crossbar - Bell Labs Record Compilation. pp. 20–25.
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