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| Number | Title | Issue Date |
| 7266591 | Providing content delivery during a call hold condition An approach for providing content transmission upon placement of a call on hold is disclosed. A data communications system includes a proxy server that is configured to receive a message from a first client indicating the hold condition of a Voice Over Internet Prot... | 09/04/2007 |
| 7257211 | Method and apparatus for controlling and/or monitoring a MULAP line At least one MULAP line in a communication installation is controlled and/or monitored using an application. To simplify the combination of MULAP lines and CTI applications, or to allow it at all, each MULAP line has an associated MULAP call number, and a plurality ... | 08/14/2007 |
| RE39406 | Telephone line coupler The telephone line coupler circuit has a single transmit opto-coupler whose output includes a DC bias component connected to a gate of a line seize switch for connecting a DC line seize load across the ring and tip contacts of the telephone line. The line seize swit... | 11/21/2006 |
| 7116771 | Method for generalization of telephone signaling requirements to support multiple international marketplaces in a single customer premises device A method for operating a telephony device accounts for variations in international standards for certain telephony operations, including hook flash functionality, pulse dialing operations, tone dialing operations, jitter buffer size, debounce characteristics, transm... | 10/03/2006 |
| 7050567 | Call management system using dynamic queue position A call center includes functionality for dynamically positioning newly received calls within an established call queue. The calls are positioned within the queue based on predefined service objectives for call types supported by the call center and a length of time ... | 05/23/2006 |
| 6983041 | Versatile communication device with a facsimile function and a telephone function In a versatile communication device having a telephone function and a facsimile function, an erroneous detection of an on-hold melody as a control signal, such as a calling tone (CNG) signal, is prevented when the on-hold melody is played during an on-hold period of... | 01/03/2006 |
| 6956462 | Methods and devices for providing power to network-based systems Circuits provide power to network-based devices, such as IP telephones, using spare conductors within existing LAN cables. The circuits, which may comprise diode bridges, are designed to provide power using existing and planned industry guidelines. ... | 10/18/2005 |
| 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 |
| 6947727 | Method and system for authentication of a service request A method and a system is directed to authentication of a commission from a customer to a service provider. A set of randomly generated code words are stored in a memory circuit associated with a mobile-telephone subscription in a mobile telephone, as well as in a da... | 09/20/2005 |
| 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 |
| 6456705 | Digital key telephone system and extension terminal device thereof According to this invention, a digital key telephone system connected to an analog public network NW having a function of transmitting a ringing signal including identification information of a calling line through a subscriber line (CO line), accommodati... | 09/24/2002 |
| 6151389 | Telephone A telephone, which includes a CPU connected to a keyboard thereof, a first switch connected between first and second telephone lines, second and third switches provided at the first and second telephone lines and connected to the CPU, the second and third... | 11/21/2000 |
| 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 receiving end (R) put the call on-hold pending availability of a... | 09/19/2000 |
| 5960065 | Two-line telephone controller with hold feature In a two-line telephone controller which includes a line select switch which operates complementarily to a force busy relay that allows an unselected telephone line to be forced to a busy state, a method for using the force busy relay also to place an act... | 09/28/1999 |
| 5915014 | Communication system An apparatus and a method of setting and confirmation of a value indicative of an on-hook period of a terminal is provided. The value is used as a threshold when distinguishing a hooking pulse for putting communication on hold which is issued by the termi... | 06/22/1999 |
| 5862210 | Signal detection circuit and telephone apparatus A signal detection circuit includes band pass filters for detecting frequency components of a Call Alert signal (CAS) signal, a tone detection circuit for detecting whether or not a signal component is present in the output signals of the band pass filter... | 01/19/1999 |
| 5835587 | Telephone having a hold function A telephone includes a telephone body, a handset and a telephone network line hold mechanism. The telephone body includes a handset cradle on which the handset is placed, a plurality of operation buttons and the like. The telephone is placed in the offhoo... | 11/10/1998 |
| 5835180 | Telephone and key telephone system having electronic directory function A key telephone system having user-friendly electronic directory function in which dialling numbers more than the number of abbreviated dialling numbers can be registered and the number of digits of abbreviated dialling number is maintained to a small num... | 11/10/1998 |
| 5832071 | Electronic patching system for telecommunications devices An electronic patching system includes a first plurality of ports connected to the terminations of a plurality of telephone and data lines from the utility central office, and a second plurality of ports wired to a plurality of telecommunications devices.... | 11/03/1998 |
| 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 a voice playback mechanism, decoder, phone interface, and... | 10/13/1998 |
| 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 employing echo cancellation techniques due the linearity afforde... | 02/04/1997 |
| 5590185 | Multiple phone line adaptor The present invention is a two line phone adaptor that allows two separate phone lines to be connected to and controlled by a single line DTMF phone. The two line phone adaptor has one ring detector for each line and one hold circuit for each line. The ad... | 12/31/1996 |
| 5483584 | Pushbutton telephone system A telephone connection is established between a pushbutton telephone set and one of telephone lines through a pushbutton telephone set unit, a speech highway, and a telephone line unit. When one of line and extension keys of the pushbutton telephone set i... | 01/09/1996 |
| 5463680 | Switching arrangement for activating electrical devices A switching arrangement for activating a plurality of electrical devices connected to a communication line. The switching arrangement monitors the communication line for the reception of activation signals, and also transmits activation signals to the com... | 10/31/1995 |
| 5422947 | Telephone in-use indicator A telephone in-use indicator having a diode bridge which is connected to a telephone line. The diode bridge ensures than an input signal from the telephone line is at a constant polarity. An inverter is connected to the diode bridge and receives a signal ... | 06/06/1995 |
| 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 cooperates with the exchange to perform a hold display on the ... | 04/25/1995 |
| 5134652 | Communication console station with priority queuing A communication console station links a plurality of communication resources (101, 103, and 105) for use by an operator. Incoming calls are placed in an incoming-call queue (207), calls on hold are placed in a holding queue (209), and all available commun... | 07/28/1992 |
| 5095504 | Telephone and telephone system having temporary transfer and hold-release functions In a telephone system for performing channel control among telephones connected to a plurality of telephone lines, a call during a conversation between first and second telephones is placed on hold by a hold request from, say, the second telephone, and th... | 03/10/1992 |
| 5003587 | Telephone on-hold device A telephone on-hold device (10) for use with a telephone handset having a handpiece (18) with a mouthpiece (22) and an earpiece (16), the telephone on-hold device (10) comprising a switch (24) located in a housing (12), the housing (12) being dimensioned ... | 03/26/1991 |
| 4996709 | Intercom telephone An intercom system for use in combination with a multi-line telephone system wherein the intercom system utilizes the same wire pair for communications between intercom units that is used for normal telephone communications. The intercom system transmits ... | 02/26/1991 |
| 4958370 | Control system for a plurality of telephone sets A control system for a plurality of telephone sets connected as branched to a central office line allows extension calling, privacy function setting and hold releasing operations between the telephone sets. Each of the telephone sets in the branched conne... | 09/18/1990 |
| 4899381 | Single-line telephone hold circuit A pair of interface devices, mounted externally to a pair of residential telephones, can place a temporary hold on the associated telephone line circuit. Each interface device interconnects a standard residential telephone with an associated telephone lin... | 02/06/1990 |
| 4870680 | Communication apparatus having a communication hold function A communication apparatus such as a telephone set has a hold circuit for putting a telephone call from a communication partner on hold, a release circuit for releasing the telephone call from the on-hold condition, a circuit for informing the communicatio... | 09/26/1989 |
| 4852158 | Telephone system allowing hold releasing request from central office line A telephone system which allows external releasing of a holding state set by a holding operation of a telephone set. A signal receiving circuit of the system receives a holding-state releasing signal such as a DTMF signal or the like sent from a central o... | 07/25/1989 |
| 4803718 | Hold detecting and control circuit for a key telephone system A key telephone system for use with at least two telephone lines that extend between a central office and two or more telephone stations. Each station is capable of responding to a manually-actuated hold select switch by establishing a hold condition on o... | 02/07/1989 |
| 4731822 | Held party notification feature This invention provides an audible indication to a held party indicating when a call is removed from the hold state. Heretofore, when two parties on a call are in a talk state and a first party puts a second party on hold, the held party must aurally moni... | 03/15/1988 |
| 4726058 | Telephone conversion device A telephone conversion device for converting a multiple line electromechanical telephone system having an electromechanical key system unit (KSU) for use with electronic telephones. Each conversion device includes a wall unit having a 50-pin connector for... | 02/16/1988 |
| 4691345 | Multifunction two line telephone system A two line telephone available for the home or the small business employs five pushbuttons for line selection, conference, hold and intercom. The line circuits and the conferencing switches are opto-isolated so that a single transformer coupled power supp... | 09/01/1987 |
| 4682353 | Key telephone system A key telephone system has a plurality of telephone sets, each set having a hold button for temporarily holding a central office ("CO") line. A plurality of cell park lamps temporarily indicate which of the CO lines is being held. A plurality of call park... | 07/21/1987 |
