In telephony, the term on-hook has the following meanings:
The condition that exists when a telephone or other user instrument is not in use, i.e., when idle waiting for a call. Note: on-hook originally referred to the storage of an idle telephone receiver, i.e., separate earpiece, on a switchhook. The weight of the receiver depresses the spring-loaded switchhook thereby disconnecting the idle instrument (except its bell) from the telephone line.
One of two possible signaling states, such as tone or no tone, or groundconnection versus battery connection. Note: if on-hook pertains to one state, off-hook pertains to the other.
The idle state, i.e., an open loop of a subscriber line or PBX user loop.
In telephony, the term on-hook has the following meanings:
The condition that exists when a telephone or other user instrument is not in use, i.e., when idle waiting for a call. Note: on-hook originally referred to the storage of an idle telephone receiver, i.e., separate earpiece, on a switchhook. The weight of the receiver depresses the spring-loaded switchhook thereby disconnecting the idle instrument (except its bell) from the telephone line.
One of two possible signaling states, such as tone or no tone, or groundconnection versus battery connection. Note: if on-hook pertains to one state, off-hook pertains to the other.
The idle state, i.e., an open loop of a subscriber line or PBX user loop.