signaling equipment
11off-hook signaling — 1. With regard to line signaling, the condition indicating that a station is being used (line loop closed). 2. With regard to trunk signaling, off hook signaling in the forward direction exists after seizure of the trunk by the switching… …
12Line signaling — is a class of telecommunications signaling protocols. Line signaling is responsible for off hook, ringing signal, answer, ground start, on hook unidirectional supervision messaging in each direction from calling party to called party and vice… …
13Viet Cong and Vietnam People's Army logistics and equipment — Trailporters The Viet Cong and the People s Army of Vietnam (PAVN or North Vietnamese Army) used well organized logistics methods to supply and equip their fighting forces. This logistics organization contributed to the defeat of their American… …
14Viet Cong and PAVN logistics and equipment — The Main Force of the People s Liberation Armed Forces (better known as the Viet Cong or VC in the West) and the NVA (North Vietnamese Army/People s Army Vietnam) used well organized logistics methods to supply and equip their fighting forces.… …
15Telephone signaling interface — There are many interface standards between analog telephone central office equipment and the subscriber s premise. Single voice paths generally include analog audio connections, either a two wire circuit or four wire circuit plus signaling paths… …
16common-battery signaling — The most common method of signaling, in which the signaling power of a telephone is supplied by the battery that drives the central equipment …
17loop signaling — Any of the three signaling methods that use the metallic loop formed by the trunk conductors and the terminating equipment bridges …
18Dual-tone multi-frequency — (DTMF) signaling is used for telephone signaling over the line in the voice frequency band to the call switching center. The version of DTMF used for telephone tone dialing is known by the trademarked term Touch Tone (canceled March 13, 1984),… …
19General Railway Signal — Infobox Company company name = General Railway Signal Company company company type = dependent site within ALSTOM since 1998 foundation = 1904 location city = Rochester location country = New York key people = products = Equipment and services… …
20Union Switch & Signal — Infobox Company company name = Union Switch and Signal company company type = part of Ansaldo since 1996 foundation = 1881 location city = Pittsburgh location country = Pennsylvania key people = products = Equipment and services for rail… …
