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| Number | Title | Issue Date |
| 8284927 | Telephone using an external media device to provide on-hold information A telephone is provided with a port for disconnectably connecting an external information source, such as an MP3 player, to the telephone, and an on-hold function that operates while a call of the telephone is on hold and either presents to the telephone's user the ... | 10/09/2012 |
| 7508929 | Apparatus and method of simulating telephone “in use” signals in a line in a telephone ring system An apparatus and method is disclosed for simulating an “in use” condition in a telephone line, so that incoming calls will get a busy signal and, therefore, will not ring all telephones on that line. ... | 03/24/2009 |
| 7292869 | Telephone equipment including a line holding system, an extension communication detecting system, and a notification system A telephone equipment having a main apparatus and a plurality of cordless handsets, which can perform an extension communication with being relayed by the main apparatus. Such a telephone equipment includes a line holding system that holds a connection between the m... | 11/06/2007 |
| 7206322 | System and method for using ADSL for introducing multiple derived lines over a single line A system and method for providing a plurality of voice and data communication lines using an ADSL local loop communication line over existing premises wire comprising a network interface device (NID), the NID receiving the ADSL local loop communication line from an ... | 04/17/2007 |
| 7177410 | Local control of call features in a telephone system A residential phone system allows for local control of call features from any phone extension. The phone system may include a microcontroller that communicates along the phone lines at a non-utilized frequency to several extension phones in a residence. The microcon... | 02/13/2007 |
| 7158624 | Methods and apparatus for selectively including an audio signal component within an audio output signal An apparatus and method selectively includes an audio signal component, such as hold music or a hold tone, within an audio output signal, such as a composite audio signal from a multi-party teleconference, based upon a condition of an audio delivery system. In one a... | 01/02/2007 |
| 7139391 | DAA hook switch 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 ... | 11/21/2006 |
| 7136479 | Method of and apparatus wherein a telephone user on hold is not required to listen to an objectionable audio signal A telephone user who is at a first telephone station and is placed on hold at a second station is prevented from listening to an objectionable audio signal while a call is in process between the user and the second telephone station. The objectionable audio signal i... | 11/14/2006 |
| 7123707 | Methods of controlling communications with at least two calling party devices by a user of a called party device Methods, and communications devices employing such methods, of controlling communications with at least two calling party devices by a user of a called party device. A first call link is established between a called party device and a first calling party device. The... | 10/17/2006 |
| 7113578 | Vandal proof intercom system for apartment buildings An electronic apartment station intercom unit, housed in a vandal proof enclosure, providing a means for a tenant to communicate with apartment building main entrance door panel and means to unlock said door. This unit has a power storage unit that enables this unit... | 09/26/2006 |
| 7085263 | Network telephony devices, softwares and methods for discontinuing transmitting music-on-hold Devices, softwares and methods for network telephony sense if a party that has been placed on hold is talking. If it does, transmitting on hold music or other characteristic sound is discontinued. Accordingly, the other party is not annoyed, such as in a conference ... | 08/01/2006 |
| 7031462 | Electronic inductor with transmit signal telephone line driver In an electronic inductor circuit, an operational amplifier drives the base of the electronic inductor transistor, and receives negative feedback from the emitter of the transistor. The transistor and operational amplifier combine to form a voltage-controlled, curre... | 04/18/2006 |
| 6978011 | Enhanced low pass filter An ADSL POTS splitter includes an enhanced low pass filter. The enhanced low pass filter includes a first filter capacitor, a first non-isolated inductor, a second non-isolated inductor, a first isolated inductor and a common mode choke. The second non-isolated indu... | 12/20/2005 |
| 6959083 | Loop current monitor circuitry and method for a communication system An audio signal processor which modifies audio signal components outside the conventional audio frequency band. The processor includes a Delta Sigma Modulator (DSM) that receives a non-interpolated digital audio signal sampled at a frequency of at least 198 kHz.... | 10/25/2005 |
| 6959081 | Expert hold queue management A method, system, and program for expert hold queue management are provided. A call is received at a call center. The call is placed on hold in a hold queue until a representative of the call center is available to answer the call. While on hold in the hold queue, t... | 10/25/2005 |
| 6947728 | Mobile phone with music reproduction function, music data reproduction method by mobile phone with music reproduction function, and the program thereof A mobile phone with music reproduction function has a reproduction unit that reproduces music data and a ring tone which are recorded in a music data recording medium, and a communication unit 108 that detects an incoming call from outside. The mobile phone | 09/20/2005 |
| 6947534 | Telephone intercom methods and systems Embodiments of the present invention relate to systems and methods for providing an intercom service. In an embodiment of the present invention, an intercom service request is received. The intercom service request includes a calling number associated with a locatio... | 09/20/2005 |
| 6947546 | Hook-flash simulation in parallel with off-hook devices A method for producing a hook-flash event on a loop (6B) incorporating a supervisory signal circuit. The supervisory signal circuit includes a supervisory signal source (2) that causes a supervisory current to flow around the loop through a threshhold ... | 09/20/2005 |
| 6937713 | IP call forward profile A method and system for providing call forwarding in an IP telephone network is disclosed. First, when a telephone number for a first telephone from a second telephone is dialed, the call is routing to a call manager. Call setup procedures with a BRG responsible for... | 08/30/2005 |
| 6930613 | Electrical instruments circuits A device representing a simple means of multiplying the functionality of wiring in point to point control circuits such that fault tolerant, fault reporting circuits can be constructed with less wire. The circuit can employ the wiring on a continuous basis by the us... | 08/16/2005 |
| 6931124 | Soft mute circuit A soft mute circuit includes a programmable amplifier controlled by a register. Data is stored in the register from an adder that combines the current data in the register with a second number for increasing or decreasing the gain of the amplifier. A summation circu... | 08/16/2005 |
| 6873700 | System and method for announcing a message through a private branch exchange There is provided an announcing method for a notification message in a PBX. The PBX stores the index of a predetermined hold notification message for a corresponding DID (Direct Inward Dialing) number upon incoming a call from a DID office line in a call processing ... | 03/29/2005 |
| 6870919 | Mute status reminder for a communication device According to some embodiments, a mute status reminder is provided for a communication device. ... | 03/22/2005 |
| 6853725 | Method and apparatus for off-hook management of plural subscriber premises devices connected to same telephone line 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... | 02/08/2005 |
| 6850610 | Telecommunications device and method for providing information during a call waiting condition A telecommunications device and a method for providing information to a party placed on hold during a call waiting condition. The telecommunications device includes a memory unit, and a call waiting module in communication with the memory unit. The call waiting modu... | 02/01/2005 |
| 6836545 | Communication system, exchange and communication holding control method Each of multifunctional telephones has a common hold button for accepting a hold/hold release instruction of a communication partner (extension) under transfer communication; a central processing equipment controls each part of a private branch exchange so that the ... | 12/28/2004 |
| 6807262 | Central office control of receive and transmit handset volume A switch based feature that allows subscribers to adjust their incoming or outgoing audio signal strength. The value of the transmit or receive pad values on the subscriber line card are adjusted to control the strength of the audio signal transmitted to, or receive... | 10/19/2004 |
| 6785383 | Telephone line switch using an optocooupler A telephone line connection and disconnection circuit has a diode bridge coupled to the telephone line which converts different voltages of the telephone line into a voltage referenced to ground. A switching circuit is coupled to the diode bridge which opens and clo... | 08/31/2004 |
| 6778664 | Line current protection circuit and method for linear and nonlinear hold circuit A novel line-current protection circuit for detecting excessive line current from a telephone line and protecting line interface circuitry from the excessive line current is presented. The protection circuit is adapted to detect when an excessive current is present ... | 08/17/2004 |
| 6751306 | Local on-hold information service with user-controlled personalized menu A telephone user sets up a “personalized” menu identifying a set of information options from which he or she desires to select when placed on-hold in a telephone system. The user's personal preferences are then saved. When the party later makes a call to a telep... | 06/15/2004 |
| 6704565 | Method and apparatus for providing a hold termination message service in a communications network A method and apparatus for providing a hold termination message service in a communications network. An on-hold telephone call between a hold initiating party and a holding party is monitored at a network node for a hold termination signal, such as a DTMF... | 03/09/2004 |
| 6694012 | System and method to provide control of music on hold to the hold party A system and method that provides a party that has been placed on hold control of music on hold. A dual-tone, multifrequency (DTMF) detector and a processor in the music on hold system monitor two-way connection. If a predefined DTMF signal is detected, t... | 02/17/2004 |
| 6563916 | System for transmitting a change in call queued/hold state across a communications network The system for transmitting a change in call queued/hold state across a communications network (termed "call state notification system" herein) functions to provide an indication to the parties on the existing call connection that the calling party has pl... | 05/13/2003 |
| 6526041 | Apparatus and method for music-on-hold delivery on a communication system A system for enabling music to be provided to callers placed on hold in a LAN network used for voice communications. Bandwidth consumption is minimized by ensuring that music-on-hold is provided in a manner that enables most necessary tasks to be executed... | 02/25/2003 |
| 6430280 | Telephone main unit and telephone control apparatus A telephone main unit has a channel switch 11 which is connected to a remote telephone control apparatus 12 via a dedicated line 2; and central controlling means 12 for controlling the channel switch. When the central controlling means receives a hold req... | 08/06/2002 |
| 6400804 | On-hold activity selection apparatus and method An on-hold activity selection apparatus and method that allows an on-hold party to select an on-hold activity, from a menu of on-hold activities, with which to be entertained and/or informed. The on-hold activity selection apparatus detects the occurrence... | 06/04/2002 |
| 6240177 | Communication device comprising an off-hook detection circuit The subject of the invention is a communications device connected in parallel with at least one item of communications apparatus on a transmission line (L1, L2). The device and the apparatus conform to a given template in terms of DC components. The devic... | 05/29/2001 |
| 6219415 | Call hold state notification across a communications network The call hold state notification system functions to provide an indication to the parties presently served by the existing call connection that the original hold state has been terminated. This is accomplished by enabling both parties (multiple parties on... | 04/17/2001 |
| 6201865 | Digital access arrangement circuitry and method for connecting to phone lines having a DC holding circuit with switchable time constants A digital direct access arrangement (DAA) circuitry may be used to terminate the telephone connections at the user's end that provides a communication path for signals to and from the phone lines. Briefly described, the DAA provides a programmable means f... | 03/13/2001 |
| 6157713 | Telephone hold circuit A hold circuit arrangement for a telephone, wherein the telephone is coupled to an extension release circuit of an external telephone, the hold circuit comprising an input control terminal; a tri-state input device used for generating a signal for the inp... | 12/05/2000 |
