The appraisal of delays in “gate type” operation

IN RECENT YEARS an increasing amount of use has been made of “gate type” lockout circuits in telephone switching systems where a call, in the process of being completed, must pass temporarily through one or more control devices. Under such conditions, some delay occurs before service is given to the component connected to the gate. One of the purposes of the gate lockout circuit is to provide an equitable distribution of delays, where delays are unavoidable.