37results about "Telephone line holding circuits" patented technology

Methods and apparatus for providing substitute media content to a communications device user during suspension of a communications session is disclosed. In an exemplary method, a communications device suspends output of audio or video information flowing from a remote communications node, in response to a received suspend message. The communications device initiates playback of substitute media content until a resume message is received, whereupon the device suspends playback of the substitute media content and resumes output of audio or video information flowing from the remote communications terminal.

According to some embodiments, a mute status reminder is provided for a communication device.

The subject invention is directed to a method and system for removing music or other unwanted noise from a conference call particularly when the music or other unwanted noise is not directly under the control of the telecommunication equipment the user is attached to and using. The method and system detects the unwanted sound, deactivates the sound source or disconnects from the line carrying the sound, monitors the disconnected line for voice energy, and reconnects the line when voice energy is detected. This capability provides the telecommunications equipment user with control over unwanted music sources being provided by equipment located either in the private or public networks.

When a call is on hold due to an operating input from a key input unit, a music signal processing unit plays back music stored in a memory card and transmits it as a holding tone via a audio signal switching unit and a wireless signal processing unit to a party on the other end of the line, so that a portable telephone capable of providing music of high tone quality and superior general quality as the holding tone to the party on the other end of the line placed on hold with no addition of any new device is provided.

An adjunct Type II caller ID / call waiting (CIDCW) receiver unit is provided which has a greatly improved ability to detect tones and other call related information on a telephone line from a central office while the customer premises equipment is in an off-hook condition. The inventive adjunct CIDCW receiver unit is placed in series between the telephone line from the central office and the customer premises equipment, rather than in parallel with the customer premises equipment as in conventional adjunct CIDCW receiver units. A second telephone line interface (TLI) is included in the adjunct CIDCW receiver unit for connection to the customer premises unit to simulate the impedance of the telephone line. The adjunct CIDCW receiver unit has the ability to disconnect, mute or suppress the microphone signal from the customer premises equipment from being included in the signal received by the call related information receiver portion of the adjunct CIDCW receiver unit.

A communication device receives an encoded signal from a primary input source. The encoded signal includes periods of speech and periods of non-speech. The communication device includes a decoder to decode the received signal to produce a decoded signal. A detector of the communication device detects the periods of speech and the periods of non-speech within the decoded signal. A controller of the communication device provides the decoded signal to an output of the communication device during the periods of speech. The controller interrupts the decoded signal during the periods of non-speech and provides an alternate input from a secondary input source to the communication device.

An IP telephone system having a function for holding a call connection when a first IP telephone terminal disconnects a call connection and a function for calling back from a second IP telephone terminal to the first IP telephone terminal when the call connection is in a hold state. The IP telephone system of the present invention includes a holding device. When the first IP telephone terminal goes into an on-hook state, an IP telephone exchange which manages the first IP telephone terminal switches the call connection between the first and second IP telephone terminals to a call connection between the holding device and the second IP telephone terminal. In addition, when the second IP telephone terminal requests a callback, the IP telephone exchange switches the call connection between the holding device and the second IP telephone terminal to a call connection between the first and second IP telephone terminals.

An exchange system capable of effectively providing a hold sound during holding time. The exchange system includes a first communication terminal (100) capable of packet communication, a second communication terminal (110) performing packet communication with the first communication terminal (100), and a network (130) connecting the first communication terminal (100) to the second communication terminal (110). When the first communication terminal (100) sets the second communication terminal (110) to the hold state, the first communication terminal (100) converts its hold data (103) by hold data conversion means (104) into a speech which can be interpreted by the second communication terminal (110) and transmits the converted speech as a hold sound.

DC holding circuitry that may be implemented with other parts of a DAA circuit to terminate a telephone connections at the user's end. The DC holding circuitry may be implemented using a synthesized inductor circuit powered by DC termination circuitry of a DAA telephone line circuit to provide quiet current that may be mirrored to provide the DC holding. The DC holding circuitry may be further implemented to actively steer DC holding current into multiple external transistors to share the power burden, and using an op-amp gain / feedback configuration to achieve low noise and distortion without the need for expensive capacitor-based filter and high powered transistor components. Variable biasing and active current steering may be employed to permit one or more external resistor / s to help dissipate power. The disclosed DC holding circuitry may also be implemented with a fast transient network having a single stage of fast transient filtering placed in the input network. A fast off-hook settling circuit block may also be implemented to achieve fast settling times by using an op-amp to clamp the receive pin voltage of a DAA circuit.

A telephone apparatus comprises a first audio input device, a second audio input device, a first audio output device, and a second audio output device. The telephone apparatus is operative to couple the first audio input device and the first audio output device to a first telephone line. In response to a first signal, the coupling between the first audio input device and the first telephone line is modified, and the second audio input device and the second audio output device are coupled to a second telephone line.

A hook switch circuit is shown wherein two high-voltage bipolar transistors, a PNP transistor Q1 and a NPN transistor Q2. that are connected in a regenerative feedback manner to form a bi-stable latch. The regenerative structure permits the use of low beta transistors that may be turned on with a low control current, but still conduct a sufficient off-hook current. Also shown is a polarity steering regenerative switch (MP1, MP2) that provides a power supply voltage from a telephone line pair and may be adapted for a polarity signal and can be combined with a current mirror (MP7) to produce a current signal proportional to the line voltage (LV1).

The invention relates to a method and a system for simultaneously answering sounds of multiple parties in a call process. The method comprises the following steps: when a mobile terminal is called, identifying whether a current mobile terminal is in a call state or not, if the current mobile terminal is in the call state, putting through a new telephone, superposing sound signals of different conversion parties and then playing the superposed sound signal; outputting a sound signal of an own party to a conversion party with high priority according to the priority of a contact number of the conversion party, and muting other conversion parties. Compared with the prior art, the method for simultaneously answering the sounds of the multiple parties in the call process, provided by the invention, has the advantages that the sounds of two or more objects are simultaneously answered by one mobile phone, so that the efficiency of answering the calls by users is improved, and the time of the users is saved.

Systems and methods for converting voltages between different voltage levels in a receiver are disclosed. In an aspect, a wireless power receiver apparatus for charging a chargeable device is provided. The apparatus includes a plurality of receive antennas disposed on a cover of the chargeable device, wherein at least one of the plurality of receive antennas is configured to wirelessly receive power according to a wireless charging protocol different from at least one other of the plurality of receive antennas. The apparatus includes a switching circuit disposed on the cover and configured to receive the wireless power from at least one of the plurality of receive antennas and selectively provide a respective voltage from a corresponding one of the plurality of receive antennas across an output configured to be connected to an input of the chargeable device.

The invention described herein is an external telephone accessory for the purpose of placing a call in an on-hold state while simultaneously providing the caller on hold with music from a CD player, mp3 player, computer sound card, or other external audio source. The basic form of the invention consists of a housing having a pushbutton switch to mechanically switch the telephone signal and activate an LED to indicate the on-hold state, input and output modular telephone jacks, and an input jack for the audio source.

The embodiment of the invention provides a call making method and apparatus. When being applied to a first terminal, the method includes the following steps that: whether the user of the first terminal is driving a car is judged; and when the user of the first terminal is driving a car, a first message is transmitted to a server, so that the server can set the current state of the user of the first terminal to a driving state according to the first message, and when the user of the first terminal does not drive the car any no longer, a second message is transmitted to the server, so that the server can set the current state to a non-driving state according to the second message, wherein the current state is public to specified users. With the call making method and apparatus provided by the invention adopted, when a dialer makes a call, the mobile phone of the dialer will query the state of an answerer in advance, if the answerer is driving a car currently, the mobile phone of the dialer sends prompts to the dialer, and therefore, the answerer will not be disturbed, and the safety of the answerer in driving can be ensured.

An off-hook management telecommunication system comprising a DTMF detector, an encoder and a microprocessor located within a channel unit. The system allows the user to depress a selected sequence of keys during a line connection which indicate to the microprocessor to hold the line off-hook, via signaling to a central office, despite the fact that the telephone is being returned to an on-hook position. The line is held off-hook for a predetermined amount of time to allow the user to switch telephones.

An apparatus and method for providing a music-on-hold service to an originating subscriber requesting a call connection to a busy terminating subscriber in a key telephone system, using an external music-on-hold source coupled to a previously selected central office line port of a central office line circuit to provide a pre-recorded melody.

A telephone set starts ringing when receiving in incoming call. The user of the telephone set is able to give an on-hold user command given after start of said signaling. In response to the on-hold command the incoming call is placed automatically on-hold.

There is provided a musical tone reproducing apparatus, which stores tone color parameters in a general-purpose storage means, to thereby shorten the time taken for a tone color changing process. A CPU 10 registers a tone color parameter group that has been read out from a RAM 11 in a tone generator memory 30, which is a general-purpose memory, in advance. The tone color parameters required when a tone generation core 33 carries out musical tone reproduction are stored in a cache memory 32 for all channels. Upon the CPU 10 giving a tone color changing command to a controller 31, a specified tone color parameter is read out from the tone generator memory 30. The tone color parameter for a specified channel in the cache memory 32 is then rewritten with the read out tone color parameter. The tone generation core 33 reads out from the cache memory 32 the rewritten tone color parameter set for each channel, and hence musical tone reproduction with a changed tone color is carried out. Because a tone color parameter group of a freely chosen number of tone color parameters has been registered in the tone generator memory 30, the need to transfer a tone color parameter from the CPU 10 to the tone generator memory 30 each time a tone color is to be changed can be removed as much as possible. Moreover, the output bit width of the cache memory 32 is made to be large, and hence the tone color parameter the tone color parameter can be set into the tone generator means instantaneously. Consequently, even though the tone color parameters are stored in advance in the general-purpose storage means, the time taken for the tone color changing process can be shortened, and hence the occurrence of a break in sound generation during tone color changing can be prevented.

On-hold audio messages to be played to callers to a business telephone system who are waiting to be connected to a desired party are transmitted over the Internet to a plurality of computers at separated locations. The on-hold messages are downloaded into USB drives at each of the second computers and the USB drive is then loaded into the USB port of a digital message unit. A microprocessor in the digital message unit interrogates the files to determine the file structure and creates a file directory in the microprocessor. Operator controls allow the selection of a particular file which is loaded from the USB drive into the digital message unit where it is decompressed and converted into analog form to provide the output to the on-hold input of a business telephone system.

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.