1. The act of furnishing an equivalent person or thing in the place of another; SYN. replacing.
2. One that replaces another especially in a job or function

ETYM Latin substitutio: cf. French substitution.
1. An event in which one thing is substituted for another; SYN. permutation, transposition, replacement, switch.
2. The act of putting one one thing or person in the place of another SYN. exchange.

A communications method that uses temporary rather than permanent connections to establish a link or to route information between two parties. In the dial-up telephone network, for example, a caller’s line goes to a switching center, where the actual connection is made to the called party. In computer networks, message switching and packet switching allow any two parties to exchange information. In both instances, messages are routed (switched) through intermediary stations that together serve to connect the sender and the receiver. + prikaži više