Abstract:
A mechanical apparatus for flashing a hookswitch of a telephone set. The apparatus is comprised of a baseplate for retention on a telephone set, and first and second co-operative planar members resiliently hinged to an edge of the baseplate, whereby the second member depresses the hookswitch in response to the first member being depressed a first predetermined amount, and subsequently releases the hookswitch in response to the first member being further depressed. The apparatus provides an accurately timed hookswitch flash in response to simple mechanical co-operation between the first and second members. The apparatus is easily installed, does not require specially modified circuitry and is highly reliable as a result of its simple construction.
Abstract:
An improved telephone station set for use with a switching system which senses flashing is disclosed. A separate flash key is included on the set. Depression of the flash key causes decoupling of the set for a predetermined time which corresponds to the flash window. Depression of the hook switch, assures decoupling of the set for a sufficiently long period of time so that a hang-up is detected even if the hook switch is immediately released.
Abstract:
A push-button dialing system for sending multifrequency signals of a dialed signal, in which a gate circuit is provided between an MF receiver of a telephone central office of P.B.X. and a signal transmitter for sending the multifrequency signals of a dial signal when a subscriber depresses a push-button of a telephone set. The signal transmitter includes a switch activated in connection with the depression of the push-button. The gate circuit in the telephone central office or P.B.X. assumes an onstate when the gate circuit receives in response to the switching on of the switch a signal transmitted over a control line extending between the switch and the gate circuit, whereby the MF receiver can receive MF signals sent from the signal transmitter only when the subscriber dials.
Abstract:
Ways for facilitating an automated calling process are described. An embodiment includes receiving a start indication to start recording events associated with a call process, starting a timing reference, receiving data provided by a user, storing information suitable to reproduce the received data based on the timing reference, and repeating the receiving step and the storing step until a stop indication to stop recording events is received. Redialing can occur without user intervention by retrieving a first indication of an information-providing event associated with a dialing process, providing data to satisfy the information-providing event, determining whether a subsequent information-providing event is to be expected, waiting for a correct time or for a prompt to provide additional data to satisfy the subsequent information-providing event, providing additional data to satisfy the subsequent information-providing event, and without user interaction, repeating the determining, waiting, and providing steps until the call is connected or until there is no additional data to provide.
Abstract:
Messages can be exchanged between two callers with ease by using an automatic telephone answering apparatus without calling the automatic telephone answering apparatus repeatedly. An automatic telephone answering apparatus which can automatically answer an incoming call includes a recording/reproducing unit (6) for recording an incoming call which the apparatus automatically answers, a call sound identifying circuit (8) for identifying a call sound contained in the incoming call signal, an identifying circuit (7) for identifying a predetermined control signal contained in the incoming call signal, and a flash switch (9) for temporarily opening a telephone line when the identifying circuits (7), (8) identify the call sound or the predetermined control signal. When the flash switch (9) temporarily opens the telephone line on the basis of identified results supplied thereto from the identifying circuits (7) and (8), the recording/reproducing unit (6) reproduces the incoming call signal recorded last. After the recording/reproducing unit (6) has reproduced the incoming call signal recorded last, the recording/reproducing unit (6) records an incoming call signal until the control signal identifying circuit (7) identifies the predetermined control signal.
Abstract:
Methods and apparatus for use in connection with a telecommunication between a local telephone and a remote telephone, which are capable of detecting whether one of the parties to the communication has attempted to initiate a three-way, i.e., conference, call by using a hook-flash signal. The apparatus includes a low pass filter for passing energy having frequencies below about 500 Hz, and an energy detector for detecting a specific electrical energy pulse characteristic of the hook-flash having passed through the low pass filter. The existence of the hook-flash is confirmed by digital signal processing equipment which identifies a rapid drop-off in energy also characteristic of the hook-flash signal. Optionally, the hook-flash may be further confirmed by including software for cooperating with the energy detector to ascertain whether sound has occurred in the telecommunication during a predetermined period following the first hook-flash signal.
Abstract:
Methods and apparatus for use in conjunction with a telephone or with equipment in telecommunication with a remote telephone are disclosed. The apparatus provides an indication as to whether a remote party using the remote telephone has performed a specific act causing the generation of a hook flash-type signal which is detected by the apparatus. The apparatus includes a low pass filter for passing energy having frequencies below about 500 Hz, and energy detector for detecting a specific electrical energy pulse having been filtered by the low pass filter and having a predetermined minimum magnitude. The apparatus also includes software for cooperating with the energy detector to detect a specific event(s) occurring on the telephone line during a predetermined maximum time window following the detection of a specific pulse. The detection of the specific event(s) provides an indication as to whether the remote party has performed a specific act such as attempting to initiate a 3-way conference call.
Abstract:
A text mail system in which a pseudo destination subaddress randomly generated at a call receiver side at the time of receiving an incoming call from an integrated services digital network is used to manage the storing or reading out operation of various sorts of messages in a mail box. The text mail system, which uses the pseudo destination subaddress as a box number based on the property that the pseudo destination subaddress is randomly given for each incoming call, can secure a high mail confidence.
Abstract:
Telephone instruments generally comprise a mechanical hookswitch connected across the pair of speech wires. This specification discloses solid state hookswitch circuitry comprising a switching transistor controlled by a hookswitch and connected in series with the output of a rectifier, the rectifier being connected directly to the incoming speech wires. Because the hookswitch controls a switching transistor, rather than having to switch line voltages directly, any reliable low current make/break switch may be employed.
Abstract:
The invention relates to a circuit arrangement for a telephone station with ground connection to a central supply device for the purpose of post-dialling signalling. The circuit arrangement operates independently of which terminal of an exchange battery in the central supply device is connected to ground. A second polarity reversal protection device (rectifier bridge) is used as an indicator of the polarity of the exchange battery, so that, dependent upon the polarity, different grounding paths are formed in the telephone station. The circuit arrangement is universally suitable for PBX exchanges.