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Match Document Document Title
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...
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...
7139391 DAA hook switch  
A hook switch circuit is shown wherein two high-voltage bipolar transistors, a PNP transistor Q 1 and a NPN transistor Q 2 . that are connected in a regenerative feedback manner to form a...
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...
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....
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...
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...
6947546 Hook-flash simulation in parallel with off-hook devices  
A method for producing a hook-flash event on a loop ( 6 B) incorporating a supervisory signal circuit. The supervisory signal circuit includes a supervisory signal source ( 2 ) that causes a...
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)...
6870919 Mute status reminder for a communication device  
According to some embodiments, a mute status reminder is provided for a communication device.
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
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...
6122346 Telephone on-hold response system  
A telephone on-hold system (10) allows a calling party such as a consumer (20) to place the telephone call on-hold from the consumer's handset (18C) in response to dialing a number where the...
6031905 Network-based call hold stand by  
A telecommunications network-based method for alerting a calling party, placed on hold by the called party, that a called party is ready to communicate comprising the steps of receiving an...
5930339 Leaving a message on a held connection  
This invention relates to arrangements for leaving messages from a held telephone. A recording device or system attached to the held telephone station, to a PBX or to a central office switch...
5875231 Telephone call on hold service for a party placed on hold by another party  
An on hold telephony service that allows a party placed on hold, if he is a subscriber to the service, to also place the call on hold and then hang up. The on hold service can be implemented on a...
5822403 Automated telephone hold device  
An automated telephone hold device including a housing with a visual indication mechanism, audible indication mechanism, and push button switch positioned on a top face thereof. Further included is...
5815567 Communications interface providing isolation and ringdown features  
A communications interface having an isolation circuit for signals from a plain old telephone set (POTS) device to communications electronics. The communications interface having an isolated power...
5768355 Three-way call detection system  
Disclosed is a three-way call detection system that uses digital signal processing to identify a third party connection. The disclosed invention operates by establishing a baseline ambient, or...
5764752 Off-hook telephone clearing system  
An off-hook telephone clearing system for a telephone line having at least two telephones connected thereto, comprising a howler tone detector connected to each telephone, and a telephone...
5612997 Off-hook disconnect and reconnect ringer device  
An off-hook disconnect and reconnect ringer device will detect if a telephone is off-hook and will receive incoming telephone calls through the off-hook telephone. The off-hook disconnect and...
5602910 Control apparatus for switching station connections using a holding tone  
In a call transfer apparatus wherein a request to transfer a call between first and second communication partners from the second communication partner to a transfer destination is made, a...
5600715 Integrated loop current detector apparatus for a PSTN modem  
An integrated loop current detector for a public switched telephone network modem. The present invention solves the loop current detect problem in general, and is especially useful in modems...
5572587 Telephone system and method for easing wait time in queue  
A telephone system and method for easing an incoming caller's wait time in queue before being connected to a called party is disclosed. A "ready" signal initiated by the called party via the called...
5557658 Communications marketing system  
A communications marketing system for selectively modifying an existing communications network by modifying a portion of the processing software permits transmitting a generally continuous...
5546454 Automatic call distributor with telephonic call holding system  
An automatic call distributor (20) having a multiport switch (22) controlled by a central control unit (24) for interconnecting telephonic calls received from external telephonic units (28) of an...
5539814 Method and apparatus for informing active subscriber of disconnection of held subscriber in call-waiting service  
When a subscriber A provided with a call-waiting service and connected to a subscriber B is called by another subscriber C and when the subscriber A responds to a call-waiting tone, the subscriber...
5537465 Integrated telephone and intercom system  
An integrated telephone system is provided, having a connection to a Central Office (CO) line and a connection to at least one secondary line. The CO line and/or the secondary line may be...
5533110 Human machine interface for telephone feature invocation  
A method of providing a visual indication to a first communication connection (CC) subscriber of the status of a telephone CC comprising the steps of providing ah icon on a display that represents...
5521964 Visual message waiting indication in a telephone voice message system  
A telephone system which offers a voice message service and which enables visual indication of waiting messages at subscriber locations using suppressed ringing connections through the switching...
5497415 Automatic release device for automatically releasing the hold-on setting of an outside line call, and transfer method for an outside line call  
An automatic release device for automatically releasing hold-on setting of an outside line call wherein a first telephone when having an outside line call from a second telephone and set to the...
5493690 Foldable portable telephone set  
A foldable portable telephone set which allows switching between a speech holding condition and a speaking condition without the necessity of an operation of a key thereby to prevent an operation...
5432846 Automatic telephone call distribution apparatus and method for electronic switching system  
The present invention discloses a switching system including a switch exchange coupled to a plurality of telephone lines and a plurality of telephone sets. When the exchange receives an incoming...
5410593 Method and device for displaying a hold service on multifunction telephone set and an exchange  
A hold displaying system includes plural multifunction telephone sets each of which has a hold indicator, and an exchange for accommodating the telephone sets. Each multifunction telephone set...
5390249 Receiver device for receiving ringing signals in an off-hook line condition  
A telephone communication enable state maintaining circuit is disclosed, and the circuit includes a communication circuit 10, a communication operating circuit 20 and an operation maintaining...
5315644 Telephone interface circuit  
A circuit for interfacing a host telephone system having a trunk line pair with a central office line pair and an additional circuit line pair includes a loop current monitor circuit for monitoring...
Matches 1 - 50 out of 128 1 2 3 >