interoffice trunkの例文

例文

1. By placing a call to a non-local toll-free number, interoffice trunks were used for free.
2. Large offices, in addition to these Junctor Circuits, had Intraoffice Trunks, which were of similar design but fit into the same Universal Trunk Frames as interoffice trunks.
3. T-carrier spans are terminated, originally one per card but in later models usually two, in Digital Line Trunk Units ( DLTU ) which concentrate their DS0 channels into the TSI . These may serve either interoffice trunks or, using Integrated Subscriber Loop Carrier, subscriber lines.