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WO/1999/027704A2 |
An output stage of a subscriber line interface circuit comprises two amplifiers, a first (111) one of which is configured to operate as an inverting amplifier (negative amplification) and a second (110) one as a non-inverting amplifier (...
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WO/1999/027703A2 |
An output stage of a subscriber line interface circuit comprising two amplifiers, a first (111) one of which is configured to operate as an inverting amplifier (negative amplification) and a second (110) one as a non-inverting amplifier ...
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WO/1999/021101A1 |
An apparatus and method for activating an operational mode for a portable intelligent communications device when a user thereof is engaged in a meeting. The operational mode includes various settings of the portable intelligent communica...
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WO/1999/018705A1 |
An organic electroluminescent material is sealed within the outer housing of a portable radio telephone along with the control grids to cause the material to luminesce in a pixilated pattern. The pixels are controlled to generate a visua...
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WO/1999/014838A1 |
The present invention relates to a method and a system for distribution of stand-by electric power via a separate network separated from the ordinary electric power network. Voltages are transformed/produced in voltage sources, TR. These...
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WO/1999/013628A1 |
There is disclosed a telecommunications device, such as a mobile phone, having means for identifying a caller on the basis of the calling line identifier signal, and means for selecting a particular alerter mode on the basis of the calle...
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WO/1999/011096A2 |
A modular digital telephone system and method featuring a universal telephony shelf adaptable for incremental expansion of legacy telephone switches and as a building block in the construction of new telephony switches. The shelf include...
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WO/1999/007162A1 |
Methods and apparatus for conserving power in terminal units (100) that transmit and receive modulated data over a communication loop (120) that is shared with voiceband telephone equipment are disclosed. The methods include monitoring t...
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WO/1999/005538A1 |
A capacity indicator displaying the charge of a secondary element such as a nickel cadmium (NiCd) battery or a nickel metal hydride (NiMH) battery indicates the charge on the basis of the voltage and the temperature of the secondary elem...
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WO/1999/005850A1 |
A telephone is provided with a means for automatically generating ringing tones to be heard by a user over ambient noise and in spite of any muffling environment in which the telephone may be located. The ambient noise is measured to det...
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WO/1999/003259A2 |
A telephone has a receiver, a transmitter, a control interface, an audio processor and a microprocessor. The audio processor includes a digital signal processor, an input audio unit coupled to a microphone, an output audio unit coupled t...
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WO/1999/000970A2 |
The invention relates to a circuit for transmitting messages on subscriber line between an exchange and a subscriber terminal, comprising a subscriber interface circuit (SLIC), a metering generator (3) and one coding-decoding unit (CODEC...
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WO/1998/058301A2 |
A control circuit comprises a buzzer and an AC/DC buzzer/load control means having: a main current stream coupled to the load, and a current source connected in series with the main current stream of the AC/DC buzzer/load control means. ...
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WO/1998/056157A1 |
Residential protection service center apparatus comprising AC power line overvoltage protection, telephone voice line overvoltage and overcurrent protection, high speed data line overvoltage and overcurrent protection and coaxial transmi...
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WO/1998/056162A1 |
In a subscriber line interface circuit (1) connected to a two-wire telephone line (A, B) for transmitting AC signals, one (A) of the wires is set to a high DC voltage lower than a first DC voltage (GND), while the other wire (B) is set t...
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WO/1998/049827A1 |
The invention concerns a method using mobile terminals and an operating infrastructure having at least one call centre, the portable terminals being assigned a unit credit, determined before they are purchased and having means for callin...
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WO/1998/049782A2 |
Known is a wire bound telecommunications device to be coupled to telecommunication lines comprising a transmission circuit coupled between the telecommunications lines, which transmission circuit comprises a power supply circuit for form...
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WO/1998/049822A1 |
In response to an incoming call connection request (200), a terminal type associated with a called party subscriber terminal is communicated (260) back from a terminating exchange to an originating exchange. The originating exchange then...
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WO/1998/048541A2 |
An isolation system is provided that is suitable for use in telephony, medical instrumentation, industrial process control and other applications. Preferred embodiments of the invention comprise a capacitive isolation barrier across whic...
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WO/1998/046003A1 |
The invention concerns a telephone equipment analog interface circuit, comprising a buffer circuit for separating by means of an isolating impedance (L; Tr), a differential line current direct component from the alternating component. Th...
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WO/1998/042154A2 |
An incoming call alert system for use with a portable communication device is disclosed as including an accessory unit physically separate from the portable communication device for providing an alerting signal, a wireless link between t...
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WO/1998/038778A2 |
An arrangement is described in which a useful signal is transmitted between at least two device units each having its own power supply circuit, the power supply circuit of at least one of these device units being supplied with power from...
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WO/1998/035484A2 |
A telecommunication circuit suitable for use in a telephone set contains at least two controlled current amplifiers having respective current transfer ratios, which controlled current amplifiers are connected such that their respective c...
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WO/1998/034387A2 |
Implemented on a vehicle, a communication system (100) used to notify a passenger of an incoming telephone call. The communication system (100) includes a telephony system (300) assigned to one or more passenger(s) of the vehicle. The te...
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WO/1998/033308A2 |
A validation-checking device (10) comprising selective detectors (11-12) for the charge frequency signal (12 kHz) and for the checking signal (16 kHz) emitted respectively by the exchange (CT) and by the telephone set (TP), and a microco...
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WO/1998/032308A2 |
An analog subscriber unit adapter/interface which generates a low voltage ring-tone signal to an audio speaker is provided. The adapter facilitates the use of an analog subscriber unit over and ISDN communications link and provides added...
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WO/1998/030005A1 |
A local exchange (10) includes a logic device (28) for producing a specified ring control signal pattern. The logic device (28), which is coupled to receive a calling information signal, produces a plurality of ring patterns according to...
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WO/1998/030003A1 |
A communication loop using a subscriber line interface circuit (SLIC) (2) is modified such that it can operate in unbalanced ringing environments as well as balanced ringing environments. This is accomplished by grounding the tip lead of...
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WO/1998/028904A2 |
The invention relates to a method and device for remote feeding several consumers of the same type from one energy source. In this method, in the connection phase, a supply current limited to a maximal value (I�max?) is first made avai...
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WO/1998/027709A1 |
A radio communication apparatus which has plural incoming call informing methods including at least an incoming call informing method by vibration, the radio communication apparatus being available to connect to an external device, compr...
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WO/1998/027710A1 |
Disclosed is a method and apparatus for automatically limiting the amplitude output of a speaker for a mobile telephone when the telephone is in the active mode of operation. In a preferred embodiment, a tuned cavity in the stand-by mode...
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WO/1998/026573A2 |
A ringtrip detector comprises a reference counter for controlling a battery current generator, which shapes the ring signal, a zero pass detector for detecting zero passes in a voltage at a node, which is proportional to the telephone li...
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WO/1998/026572A2 |
A ring-trip circuit monitors the voltage developed across a source resistor coupled to one of the leads of the subscriber line circuit, regardless of the ringing frequency of the ringing voltage applied to the line circuit, and irrespect...
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WO/1998/025391A1 |
In a multi-service wireless, or wired, integrated services digital network, the type-of-call information in a call setup message is used at the called station to generate a distinctive ring or distinctive call-waiting tone indicating the...
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WO/1998/025397A1 |
A telecommunication device is disclosed comprising a ringing information memory means, and a ringing information memory updating means for updating the ringing information content which has the form of, for example, melodies. The ringing...
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WO/1998/021875A1 |
In a subscriber line interface circuit, means are adapted to apply to a line (1, 2), associated with the line interface circuit, an essentially constant line current (IL) of a first predetermined value (IL1) for line voltages (UL) up to ...
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WO/1998/021876A1 |
The present invention relates to a method and a device for diversion of power in an electric circuit (1), e.g. a subscriber circuit with a balanced two-wire transmission, comprising a user (3) with a variable voltage requirement, which i...
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WO/1998/021914A2 |
For ensuring power supply, e.g. to an ISDN network basic access, a common DC voltage converter (GW) is provided which comprises two primary circuits (T1, w1; T2, w2) fitted with final control devices (T1, T2). The secondary circuits are ...
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WO/1998/019480A2 |
A method and apparatus for downloading tone data from a public land mobile network (50) to a mobile telephone unit (20) are disclosed. A mobile telephone unit (20) includes means (160) enabling the user to request downloading of tone dat...
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WO/1998/015110A2 |
Remote supply circuitry for a subscriber's station with subscribes who can be connected to a central point via subscriber lines. Subscriber supply voltage or power supply is provided in each cas via at least one power disconnector which ...
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WO/1998/013744A2 |
The invention concerns a method wherein, in the event of a failure in a programme-controlled circuit (STB) of the operating voltage (BS), supplied by a primary voltage source, the circuit (STB) is supplied with supply voltage (VS) by mea...
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WO/1998/013999A2 |
A power supply circuit for application in telephone devices optimises a supply voltage usable for facilities such as handsfree, listening-in and the like. When the telephone line power exceeds a predefined value this is being sensed and ...
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WO/1998/013978A2 |
A current distribution circuit for application in a communication device, such as a telephone subscriber circuit comprises a first current sinking branch, which is connected in parallel to a second current sinking branch. Both branches s...
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WO/1998/010572A1 |
By actuating a control element an incoming call is accepted but no speech connection is established with the caller. Instead a stored text is announced, requesting the caller to hold the line. After further actuation of the control eleme...
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WO/1998/010582A1 |
Known is a telecommunications system comprising a supply circuit for a telecommunications line comprising electronic impedances for emulating lump element coils. Such coils are used for preventing AC signals to enter the DC power supply ...
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WO/1998/009255A1 |
The invention pertains to a method for crediting or recrediting a SIM card (subscriber identity module) for a mobile radio telephone (6) with a given amount (28). The SIM card comprises a chip provided with a memory element (11). The amo...
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WO/1998/008336A1 |
A communication system includes a SLIC device and a SLAC device. The SLIC device and the SLAC device cooperate to control the power level provided to a subscriber line. The SLAC device includes a digital control circuit which receives a ...
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WO/1998/007265A1 |
A programmable cellular telephone activates selected functions based on a user modifiable schedule. The user stores schedule information in a schedule table for automatic function activation/deactivation. A controller controls all cellul...
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WO/1998/006158A1 |
A DC electrical power supply system (30) for converting AC power to DC power for various telecommunications equipment loads includes plural rectifiers (46, 48, 50) or converter(s) (52) utilizing adapter plate(s) (42a-d & 44a-d) for suppo...
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WO/1998/005151A1 |
Method for improving the calling procedure of telephones (13) by creating customized messages (20) for telephones coupled to a telephone exchange (11). The messages are registered on one or more sections of memory (21) located in the tel...
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