Origin of interoffice
Examples from the Web for inter-office
Historical Examples of inter-office
She talked into the inter-office phone, did a lot of listening and yessing.Ye of Little Faith
Roger Phillips Graham
As soon as the door had closed, Jack Carlson bounded back to his desk, touched a button on an inter-office communications box.
The action of the two kinds of trunks, local or inter-office, is broadly the same.
The purpose of the trunk repeater is to enable the inter-office trunking to be done over two wires.