|
Match
|
Document |
Document Title |
|
|
7283623 |
Internet browsing using a uniform interface
A system and method for providing a uniform interface on heterogeneous access devices, that are capable of requesting specified classes of information from a server. Access devices, such as those...
|
|
|
6256488 |
Dialing method in wireless local loop terminal
A method for processing a dialed signal in a WLL terminal. Upon sensing of an off-hook state of a telephone connected by wires to a WLL terminal, a DTMF signal corresponding to a key input from the...
|
|
|
5859913 |
Method and system for the high-speed generation and transmission of a sequence of characters by means of voice frequencies
Disclosed is a method enabling the generation, by means of voice frequencies, of a sequence of several characters and the high-speed transmission of these characters. This method comprises the step...
|
|
|
5793863 |
Telephone having a speech band limiting function
In a telephone, a speech band switching circuit selectively provides a received speech with one of a plurality of frequency characteristics. A sensing circuit senses the level of noise around the...
|
|
|
5438618 |
Vocal frequency suppression apparatus and method
A vocal frequency suppression apparatus for suppressing selected portions of a vocal signal to prevent inadvertent control of components controlled by dual tone multi-frequency ("DTMF") codes. The...
|
|
|
5128982 |
Electronic apparatus for "Hands off" control of a voice mail system
An apparatus for "hands off" control of a Voice Mail System over a telephone line by a user to allow the user to simultaneously perform other functions such as manually processing the "oral mail"...
|
|
|
5105438 |
Remotely accessing intelligent network channel terminating equipment device
This invention is a method of remotely accessing an Intelligent Network Channel Terminating Equipment device to expedite the testing and servicing of telecommunications circuits. Intelligent...
|
|
|
5042066 |
Dialer circuit
A dialer circuit equipped with built-in dialer memories for auto-redial or abbreviated-dial telephone communication and operable to send out a DTMF signal or a pulse signal to a telephone circuit...
|
|
|
4868858 |
Keypad/dialler interface for telephone test set
The functionality of the keypad of a telephone test set is augmented by an interface circuit arrangement which enables keys of the keypad to be used to control both dialing signal generation and...
|
|
|
4490579 |
Auto-dialing pager receiver
A telephone dialing pager providing a visual display of a caller's telephone number and storage of a plurality of telephone numbers of consecutive callers. The stored information data corresponding...
|
|
|
4475012 |
Subscriber telephone set incorporating overvoltage protection
Electronically controlled subscriber telephone set which down-stream is protected by two PTC resistors and a VDR which are thermally coupled, is protected upstream of the hook contacts by a power...
|
|
|
4320257 |
Compensation of transmission losses in a telephone system
In a telephone system, compensation for transmission losses over any given section of the transmission path is achieved by inserting at a selected location in the telephone transmission path a...
|
|
|
4309573 |
Loudspeaking substation circuit
An improved loudspeaking substation circuit employing a dual-tone multi-frequency signal generator wherein output tone levels are regulated by the substation transmission circuit when operating in...
|
|
|
4223186 |
Circuit arrangement for line-supplied subscriber stations having dial devices
A circuit arrangement for subscriber stations which are supplied by way of subscriber lines and which have dial devices and voice circuits employ, in order to minimize the insertion lost during the...
|
|
|
4211895 |
Electronic telephone system with time division multiplexed signalling
An electronic telephone system has a plurality of extensions connected radially to a central equipment by respective cables each providing separate speech and signalling paths. Each of the...
|
|
|
4169969 |
Apparatus for detecting in-band signalling signals
An apparatus comprising a stopband filter, a linear amplifier, a limiter circuit, a narrow band filter and a threshold circuit, insensitive to voice signals. When signalling signals are emitted...
|
|
|
4130737 |
Two-link intercom system
A two-path intercom system wherein a first link or path is non-exclusive and the second link or path is exclusive. When the system is idle, the first call is automatically switched to the second...
|
|
|
4110561 |
Communication unit for code generation and voice communication
Communication units for hand-held use, combining a microphone for voice communication with means for generating at least two code frequencies for signaling, are made more compact and economical by...
|
|
|
4071715 |
Push-button switch for a multifrequency dialling telephone set
A push-button switch for a multifrequency dialling telephone set is described. By utilizing a connection group of three conducting reeds between the support plane and the telephone casing, at least...
|
|
|
4064367 |
Dual tone selector with answerback signalling
A function control code sequence of signals, each comprising a pair of audio frequency tones, is transmitted from a control location to a remote station selector. Each input signal is applied to a...
|
|
|
4017695 |
Customer operated gain control circuit
A customer controlled gain circuit allows a customer to control the transmission amplifier gain in a trunk circuit by means of multifrequency signals. The trunk circuit contains a multifrequency...
|
|
|
3997732 |
Call tracing and identification system
A call tracing and identification system for use with a public telephone network includes at least one interrogation and digital display circuit associated with a called-party telephone of the...
|
|
|
3988549 |
Keyboard type telephone station adapted to transmit dialling pulses and multifrequency signals
Telephone set arrangement designed to be used as a computer terminal. It has a first call generator transmitting call pulse trains and a second call generator transmitting call multifrequency...
|
|
|
3911223 |
Circuit arrangement for subscriber stations in telecommunications installations, especially telephone installations with auxiliary data traffic
Apparatus is described for use in telecommunication subscriber stations, e.g., telephones, having keyboards for dialing tone frequency, character-representing signals. The apparatus particularly...
|
|
|
3778556 |
TELEPHONE SIGNALING AND TESTING APPARATUS WITH PROVISIONS FOR EITHER PULSE OR MULTIFREQUENCY DIALING
Telephone signaling and testing apparatus is provided to generate either dial pulse coded signals or multiple frequency coded signals for use in signaling or testing along transmission lines.
|
|
|
3739100 |
DIAL AND MULTIFREQUENCY TELEPHONE SYSTEM EMPLOYING RINGING AND LAMP FLASH SIGNALLING
An intercom telephone system having a selector and selector control circuit to receive dial pulse digits. Ringing and lamp flash signals are applied to a called station through two levels of the...
|
|
|
3725602 |
MACHINE CONTROL BY ACOUSTIC ENERGY
Machine control is effected by the application of voiced commands or other acoustic energy to a transducer to coincide in time with one of a plurality of indicia being displayed sequentially by a...
|
|
|
3636269 |
ARRANGEMENT FOR VOICE-FREQUENCY SIGNALLING IN TELEPHONE SYSTEMS
In an automatic telephone system a subscriber's instrument has a key set and voice-frequency signal transmitter for the sending of different signals through the subscriber's line to receivers in a...
|
|
|
3525819 |
ELECTRONIC COMMON SWITCH FOR A TELEPHONE SET
|
|
|
3519758 |
FEED-IN METHOD FOR SIGNALLING FREQUENCIES
|
|
|
3496302 |
VOICE-FREQUENCY KEY DIALLING PROVIDING FOR REPEATED CONNECTION OF A REGISTER AT AN ESTABLISHED CONNECTION
|
|
|
3487171 |
CIRCUIT ARRANGEMENT FOR SELECTING A TELEPHONE EXTENSION BY SELECTOR KEYS
|
|
|
3433902 |
SPEECH IMMUNITY VOICE FREQUENCY SIGNALLING SYSTEMS
|
|
|
3428756 |
DIAL PULSE TRANSIENT DETECTOR
|
|
|
3409742 |
Data converting buffer circuit
|
|
|
3330911 |
Private automatic branch exchanges
|
|
|
3313886 |
V-f key-dialling
|
|
|
3306984 |
Elimination of talk-off in in-band signaling systems
|
|
|
3303290 |
Signaling arrangements employing piezoelectric devices
|
|
|
3300589 |
Telephone ringing circuits
|
|
|
3270144 |
Dial signal receiving facilities
|
|
|
3200205 |
Speech immunity voice frequency signalling system
|
|
|
3187107 |
Voice-frequency key-dialing subscriber's station
|
|
|
3187109 |
Voice frequency signalling system
|
|
|
3153703 |
Transistorized telephone subsets
|
|
|
3140356 |
Communication system employing frequency selection operations
|
|
|
3090838 |
Selective signaling system
|
|
|
3065305 |
Connecting device for private automatic branch exchanges
|
|
|
3061783 |
Inband signalling system
|
|
|
3035250 |
Selective calling system
|