Remotely activated on-hold circuit

摘要

A system for adding wireless on-hold capability to standard single or multi-line telephones connected to one or more phone lines. The system includes a wireless on-hold unit with transceiver associated with each telephone and each on-hold unit includes a button for each telephone line for indicating when a telephone line is to be placed into or removed from an on-hold state and a visual indicator indicating which state each telephone line is in. The system also includes a central control unit with transceiver hard wired connected between the phone lines and the telephone(s) connected to each phone line, and the central control unit places a phone line in an on-hold state or removes the on-hold state based on signals wirelessly received from the on-hold units.

主权项

1. A telephone on-hold system for use with a telephone line having connected thereto
one or more telephones that have no built in on-hold capability, the on-hold system comprising:
a central control unit that is hard wired connected between the telephone line and telephones that are connected to the telephone line, and the central control unit has a transceiver;an on-hold unit associated with each of the telephones for which on-hold capability is to be provided, each on-hold unit having a transceiver for communicating with the central control unit transceiver;wherein each on-hold unit comprises means manually operated by a person using the associated telephone for causing the transceiver of the last mentioned on-hold unit to transmit a signal to the central control unit transceiver that causes the central control unit to place an on-hold condition on the telephone line, and when the person again operates the manually operated means, the manually operated means causes the transceiver of the last mentioned on-hold unit to transmit a signal to the central control unit transceiver that causes the central control unit to remove the on-hold condition from the telephone line.