In telecommunications, a cord circuit is a switchboard circuit in which a plug-terminated cord is used to establish connections manually between user lines or between trunks and user lines.
A number of cord circuits are furnished as part of the switchboard position equipment.
In modern cordless switchboards, the cord-circuit function is switch operated and may be programmable.
In early and middle 20th century telephone exchanges this task was done by a supervisory relay set known variously as junctor circuit or district junctor.
Later designs made it a function of the trunk circuit or absorbed it into software.