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2016

19479543Call flow system and method for use in a VoIP telecommunication system
29473540Call flow system and method for use in a legacy telecommunication system
39356972System and method for providing enterprise voice call continuity
49319436Method for integrating functions of a telecommunications network in a data network
59313337Telephone exchange system, telephone exchanger, and incoming call switching method

2015

69215319System and method for executing originating services in a terminating network for IMS and non-IMS applications
79191416System and method for providing enterprise voice call continuity
89137377Systems and methods for at least partially releasing an appliance from a private branch exchange

2013

98369492Directory dialer name recognition

2012

108315363Network call recording
118306200Method and apparatus for processing of a toll free call service alarm

2005

126956936Virtual telephone
136950426Method and system for transmitting data between two communication devices via a packet-oriented communication network
146920210Device and method for network communication
156920130Gateway adapter for a PBX system
166912273PBX switch incorporating methods and apparatus for automatically detecting call appearance values for each primary directory number on a basic rate interface
176909694Routing in a private network with compression
186892232Local networking system for registering unregistered terminals
196882720Computer telephony integration
206879586Internet protocol call-in centers and establishing remote agents
216873700System and method for announcing a message through a private branch exchange
226856678Method for updating call redirection destinations in a communication network
236853851Dual mode terminal for accessing a cellular network directly or via a wireless intranet
246847709Private branch exchange apparatus and accounting process method

2004

256834105Method for operating a private telecommunications network
266816588Method for switching telephone calls between two telephone networks using a central controller
276816587Virtual private line connection system and method
286816576Tree hierarchy and description for generated logs
296816483Switched virtual circuit call processing/routing system
306813246Routing calls with overflows in a private network
316804329Methods and apparatus for enabling a non-DID station of a PBX or MLTS to receive a PSAP call back
326799041Method for setting up a connection between a mobile radio network and a destination call number in a private communication network
336798875Method and system for rerouting telephone calls directed to a private branch exchange via a private corporate network
346792097System and method for implementing telephony call control via a set of components that communicate with each other via a unique telephony protocol
356791972Apparatus for interfacing a private branch exchange with an asynchronous transfer mode network and method thereof
366788778Private branch exchange (PBX) system, private branch exchange, and method of communication using the same PBX system
376781957Application module interface for a control channel in a private branch exchange (PBX) environment
386771773Digital switching system with shared analog line
396771636Method and telecommunications system for transmitting data from a first to a second private branch exchange
406768732Configuration for data transmission via a communication network
416760586System and method for processing a handover of digital enhanced cordless telecommunication (DECT) line cards in a switching system
426760322CTI Control System
436744853Testing of telephone lines
446741696Automatic call distributing method and system
456741610Universal protocol conversion
466738814Method for blocking denial of service and address spoofing attacks on a private network
476735296Method and apparatus for swapping telephone numbers between switching modules
486735194Digital private signaling system over internet protocol
496731721Telephone exchange apparatus
506728355Method and apparatus for forwarding a caller identification for a credit card or calling card call to an automatic number identification system of a telephone network
516728239Scaleable network server for low cost PBX
526718033Private network interchange unit application-oriented half-link
536714640Communication system, exchange and extension call processing method
546711252Method and system for implementing intermediary services in a telecommunication system
556707897Private branch exchange
566707797Multi-line telephony via network gateways
576687354Method and arrangement for connection of a computer to a computer network via a telephone exchange
586681001Computer integrated telecommunications systems and methods

2003

596671370Method and apparatus enabling a calling telephone handset to choose a ringing indication(s) to be played and/or shown at a receiving telephone handset
606671366Method of connecting calls
616668052Method and system for signaling in a telecommunication system
626668048Conference communication system
636667958Routing calls to external networks from a private network
646646990Distributed technique for allocating calls
656643709Device and method for transporting and converting protocol messages from one protocol into another
666643366Control of access to the call completion on busy link service in a private telecommunication network
676633639Telephone switch configuration detector
686633631Digital key telephone system and extension terminal device thereof
696633591Switch device and system
706628776DNIC peripheral extender
716625275Private branch exchange network system
726625178Virtual private line control system with improved transmission efficiency
736625139Apparatus and methods for coordinating internet protocol telephone and data communications
746621897Multichannel dynamic telephone link and method of operating it
756618476Line information security interface for TAPI service provider
766611589PBX system for interworking digital telephone with personal computer and controlling method thereof
776608831Breakout/break-in hybrid network system
786606668System and method for least cost routing and managing multiple gatekeepers on a packet switched network
796597685Method and apparatus for determining and using multiple object states in an intelligent internet protocol telephony network
806594685Universal application programming interface having generic message format
816587555Virtual PBX
826584185Telephone abstraction layer and system in a computer telephony system
836581104Load balancing in a distributed computer enterprise environment
846567514Method and system for processing telephone calls via a remote tie-line
856563817Communication system
866563814Method and apparatus for controlling the operation of a digital telephone switchboard
876563799Application module interface for hardware control signals in a private branch exchange (PBX) environment
886563788Method and apparatus for call distribution and override with priority recognition and fairness timing routines
896556670Method for solving the music-on-hold problem in an audio conference
906553024Method and configuration for providing performance features for mobile subscribers via a communications network
916545589Method and apparatus for managing telecommunications
926542594Method for the management of an automatic branch exchange with the creation of a table of users, and corresponding automatic branch exchange
936542475Method and system for providing enhanced call service features at remote locations
946535597Private circuit provision in a telecommunications network
956507580Method of controlling a calling in distributed node exchange network, distributed node exchange and distributed node exchange network
966507578Channel division control equipment of the ISDN primary rate interface circuit
976504922Remote peripheral switch backup call service mechanism

2002

986496576Digital key telephone system and extension terminal device thereof
996480583Method for providing information services in characters through ISDN
1006480509Communication system using a compressed connection
1016477245Method for the management of a telephone automatic branch exchange, external management device and corresponding automatic branch exchange
1026466661Method of establishing a connection, as well as exchange, service computer and communications network
1036459785Method of providing a dial-in function in telecommunication systems
1046456705Digital key telephone system and extension terminal device thereof
1056453164Intelligent telephone control system which allows subscribers to remotely control a plurality of call handling utilities
1066452946Apparatus and method for improving performance in master and slave communications systems
1076442256System and method for establishing a call path through a private network
1086430283Communication system consisting of at least two private branch exchanges with pbx team function
1096424990Distributed processing systems incorporating a plurality of cells which process information in response to single events
1106418200Automatic synchronization of address directories for unified messaging
1116415022User programmable telephone wiring access terminal
1126411601System and method for securing available communications network resources
1136408063Method and arrangement for complementing a telephone connection with additional information
1146408060Digital key telephone system and extension terminal device thereof
1156404881Exchange and an exchange system in a communication network
1166400817Multiple-function digital telephone set in a private branch exchange
1176400815Method and apparatus for subscriber line to telephone call distribution
1186396905Method and apparatus for routing blocked telephone calls
1196389005Automatic backup trunking for voice over the internet
1206377677Telecommunications network having successively utilized different network addresses to a single destination
1216377671Digital key telephone system and extension terminal device thereof
1226373924Digital key telephone system and extension terminal device thereof
1236373836Apparatus and methods in routing internet protocol network telephony calls in a centrally-managed call center system
1246370393Private branch exchange
1256366656Method and apparatus for migrating embedded PBX system to personal computer
1266363080Method and apparatus for bypassing a local exchange carrier using analog in-band signaling
1276359896Dynamic selection of interworking functions in a communication system
1286351636System and method for automatic area code updating
1296346964Interoffice broadband communication system using twisted pair telephone wires
1306345092Switch and method of seizing outgoing trunk of same
1316343126Method and apparatus for interfacing analog telephone apparatus to a digital, analog or hybrid telephone switching system
1326337857Computer telephony integrated network
1336335967Buffer for connection data

2001

1346332082Personal communicator telephone system
1356331986Method for resource allocation and routing in multi-service virtual private networks
1366320954Communication system consisting of at least two private branch exchanges with a team function
1376311238Telecommunication switch with layer-specific processor capable of attaching atomic function message buffer to internal representation of ppl event indication message upon occurrence of predetermined event
1386310947One number LAN based calendar
1396310943Method and apparatus for forwarding a caller identification for a credit card or calling card call to an automatic number identification system of a telephone network
1406301353Common automatic route selection leading digit strings
1416301339System and method for providing a remote user with a virtual presence to an office
1426295456Dynamic binding and bridging in a communication system
1436295350Telecommunication network with least cost routing
1446295349Exchange
1456292550Dynamic call vectoring
1466289089Key telephone system with cordless terminals
1476285879Process and system for automatic routing
1486272496Method for creating and modifying similar and dissimilar databases for use in private branch exchange configurations for telecommunication systems
1496263072Computer telephony integrated network
1506263061Digital button telephone system and extension terminal for the same
1516246678Data access server for PBX
1526243442Telephone exchange apparatus
1536229885Method for providing remote emulation of the functionality of a private exchange
1546226287System and method for integrating voice on network with traditional telephony
1556223054Wireless local loop system utilizing independent central offices located in new residential and commercial developments
1566222913Method and apparatus for displaying caller information during call switching in private branch exchange
1576215770Method of establishing a connection as well as an exchange, service computer and communications network
1586208724Virtual telephone
1596208639Computer network system with telephonic function
1606205216Apparatus and method for inter-network communication
1616201950Computer-controlled paging and telephone communication system and method
1626195424Automatic person-following communication system
1636185283Telephone system providing personalized telephone features
1646181789Telecommunication system and processor means, and method
1656175564Apparatus and methods for managing multiple internet protocol capable call centers
1666169797Method for setting up telecommunication connections

2000

1676167128Method and apparatus for controlling a telephone system
1686167123One number voice fax data PBX call discrimination
1696167053Exchange system
1706160879Private circuit provision in a telecommunications network
1716157655Method for estimating telephony system-queue waiting time in an agent level routing environment
1726151390Protocol conversion using channel associated signaling
1736141343Channel division control equipment of the ISDN primary rate interface circuit
1746134618Telecommunication switch having a universal API with a single call processing message including user-definable data and response message each having a generic format
1756130938Automatic call forwarding
1766122484Method and apparatus for processing telephone calls
1776119187Telecommunication system with universal API using generic messages having user functionality associated with predetermined functions, primitives and logical states for defining PPL component state machines
1786111945Virtual inter-machine trunking feature for communication networks
1796111893Universal protocol conversion
1806104912Meet-me telephone system with subscriber notification feature
1816100882Textual recording of contributions to audio conference using speech recognition
1826088749Universal API with generic call processing message having user-defined PPL event ID and generic response message for communications between telecommunications switch and host application
1836088438Method of and apparatus for networking a plurality of private branch exchange systems using ISDN lines
1846081520Methods and arrangements for involving remote communication systems in a corporate network
1856076093Real-time interactive directory
1866075852Telecommunications system and method for processing call-independent signalling transactions
1876067443Communicator for a telephone system
1886058415System and method for integration of communication systems with computer-based information systems
1896058180Automatic person-following communication system
1906052459Method and arrangement for signalling systems
1916044403Network server platform for internet, JAVA server and video application server
1926044146Method and apparatus for call distribution and override with priority
1936044082Private branch exchange, telecommunication system and methods of transmitting signals in subrate channels
1946038306Method and application means for establishing performance features in private communication systems of a public communication network
1956035030Re-establishment of a private circuit in a telecommunications system
1966026156Enhanced call waiting
1976026153Personal communicator telephone system
1986026149Method and apparatus for managing telecommunications
1996021428Apparatus and method in improving e-mail routing in an internet protocol network telephony call-in-center
2006021190Method and apparatus for receiving and processing an incoming call
2016021114Method and system for utilizing communications lines
2026014377System and method for an integrated wireline/wireless service using private branch exchange lines

1999

2036009333Telephone communication system having a locator and a scheduling facility
2046005941Method and apparatus for providing optional service functions in a private branch exchange
2056005928Method and system for automatic distribution addressing
2066005874Method of processing messages in a secure communications system having a plurality of encryption procedures, and such a secure communication system
2076003070E-mail system and interface for equipment monitoring and control
2086002753Method and apparatus for interfacing computers to exchange telephone call business information
2095995616Apparatus for communication between a telephone exchange and connected telephone sets
2105991390Method and apparatus for teleworking from remote terminals
2115991310Method and apparatus for bypassing a local exchange carrier to permit an independent central office to provide local calling services
2125982866Method and apparatus for forwarding caller identification for a credit card or calling card call to an automatic number identification system of a telephone network
2135978674Method and apparatus for configuring dispersed components in a communications system
2145974136Apparatus for electronic exchange having a general-purpose bus separating the exchange unit and control unit
2155970130Independent central office which provides local and long distance calling services to new residential and commercial developments
2165970126Communication method and system
2175960442Real-time interactive directory
2185960340Automatic cellular telephone registration for universal telephone number service
2195959977Apparatus for embodying combined time switching and conference calling functions
2205956392Private branch exchange apparatus
2215949873Method of providing centrex type operation using a PBX and a central switching office
2225945990PBX data retrieval and reporting system and method
2235943618Multiple orientation, multiple antenna apparatus
2245943414Transparent protected access to corporate dialing plan
2255937036Method and apparatus for sensing external alarms using a standard telephony interface
2265930346Extended public switched telephone network architecture with enhanced subscriber control on call setup
2275930336Voice dialing server for branch exchange telephone systems
2285930101Overvoltage cut-off circuit of private exchange branch having tie line
2295926536Method of establishing a connection as well as an exchange, service computer and communications network
2305924016Control and monitoring apparatus and method for a telephone system
2315920619Regional centrex
2325917901Telecommunications system
2335912964Adaptive telephone handset interface
2345912949Voice-dialing system using both spoken names and initials in recognition
2355907600Product registration system
2365905776System and method of co-ordinating communications for telecommuters
2375903571Distributed transit private branch exchange
2385901213Method for providing virtual dedicated access to an inter-exchange carrier
2395894512Method and apparatus for routing voice and video calls to a group of agents
2405890064Mobile telecommunications network having integrated wireless office system
2415889845System and method for providing a remote user with a virtual presence to an office
2425887055Subscriber information shifting technique for a private exchange
2435883949Method for a private branch communications exchange to activate a night service configuration
2445883896Arrangement for coupling optional auxiliary devices to terminal equipment of private branch exchanges
2455881136Fax overflow system
2465878127Method and apparatus for facilitating remote communications access to multiple locations within a telecommunications network
2475875242Telecommunications installation and management system and method
2485875234Computer integrated PBX system
2495867568Coverage of redirected calls
2505867493Apparatus and method for selective masking of telecommunications systems
2515862211Automatic simultaneous voice-and-data call setup for remote-site servicing
2525862208Method and system for enabling a party to change terminals during a call
2535859855Network emulator for private communication terminal equipment

1998

2545842112Personal communicator system for identifying a telephone which is disposed proximate a locator transmitter
2555841854Wireless telephone integration system and method for call centers and workgroups
2565841837Method and apparatus for processing telephone calls
2575839067Corporate communication system
2585838780Double-registration avoidance method for use in registering subscriber directory numbers
2595838779Adjunct controller for a telephone system
2605835126Interactive system for a closed cable network which includes facsimiles and voice mail on a display
2615826030Telecommunication switch having a universal API with a single call processing message including user-definable data and response message each having a generic format
2625825868Arrangement for providing private-network line features on central-office-to-PBX trunks
2635825867Enhanced call waiting
2645825866Private electronic exchange apparatus having a plurality of extension terminals and office line terminals
2655825779PBX networking with quality of service control
2665822405Automated retrieval of voice mail using speech recognition
2675818921Signaling system and method for enabling PBX-PBX feature transparency across a switched public network
2685815564System for connecting an incoming call to a selected one of a number of extensions
2695805692Private automatic branch exchange (PABX) system with transparent computer supported telecommunications applications (CSTA) functionality
2705805690Method of distributed call control in a distributed transit PBX system
2715799076Telecommunication system for providing status information of connected parties having associated party processses
2725796729Integrated telecommunication system architecture for wireless and wireline access featuring PACS radio technology
2735793856Switch system for switching extension numbers
2745793847Method and apparatus for transferring a data call
2755787355Method and apparatus for wireless trunking to private branch exchanges
2765784381Stored program controlled PBX accommodating secondary rate tie trunks using primary rate interfaces
2775781611Method and apparatus for monitoring status of speech connection between central office lines
2785778058Method of adding a new PBX and new PBX port to an existing PBX network
2795774539Communication system having switchably-coupled subscriber terminals
2805774531Telecommunications system and method for automatic call processing according foregoing inbound and outbound calls to arbitrary delegates
2815764750Communicating between diverse communications environments
2825764639System and method for providing a remote user with a virtual presence to an office
2835761289800 number callback
2845761286Method for enabling communications between calling an called multmedia terminals
2855761273Analog self-test circuitry for a trunk interface
2865754642Telephone terminal having multiple handsets
2875752191Telephone control system which connects a caller with a subscriber AT A telephone address
2885751760Controller for a telephone system with code screening of incoming calls
2895748723Telephone system
2905745701Security protected system for interconnection of local networks via a public transmission network
2915745694Network resource reservation with admission and link control functions separated for expandability and high-speed operation
2925742906Intelligent PBX in-building and out-of-building personal reach communications system
2935742596Network based distributed PBX system
2945729601Electronic exchange apparatus having separated exchange unit and general-purpose control unit
2955724417Call forwarding techniques using smart cards
2965724408Automated call screening
2975717746Designated channel terminating method and apparatus
2985715304Private branch exchange
2995715300Method for establishing data connections in an auxiliary exchange communications installation
3005706338Real-time communications fraud monitoring system

1997

3015703942Portable telephone user profiles using central computer
3025703936Communication apparatus receiving information from portable information medium
3035694453Method and apparatus for processing telephone calls and delivering information about the calls to a pager
3045684789Remote control, link independent A/B switch box with diagnostic loopback
3055675638Communications device entry method and apparatus
3065675577Internetwork routing using different service categories for establishing alternate route
3075673299Adjunct controller for a telephone system
3085666401Automated attendant call processor
3095652790Hierarchical switch support of services for subscribers based on organizational membership
3105651062Automatic private branch exchange apparatus
3115651061Telephone exchange system
3125651058Hotel interactive communication apparatus
3135649005PC with telephony exchange function
3145638434Conference system for dial-out telephone calls
3155638432Method of setting up telecommunication connections
3165633920Smart phone
3175631953Circuit arrangement for integration of EDP systems in the utilization of telephone systems
3185631901Method of transmitting control signals and PBX system
3195623540PBX data retrieval and reporting system and method
3205610970Telephone system with scheduled handling of calls
3215608791Group exchange port (GXP)
3225606604System and method for preventing fraud upon PBX through a remote maintenance or administration port
3235604795Communication method and apparatus for providing terminal information to a line connected to plural networks
3245602904System for controlling a call termination on the basis of caller data in a private switched telephone system
3255598465Exchange controlling system for managing terminal groups
3265598409Programmable telecommunications switch for personal computer
3275596569Telecommunications switch with improved redundancy

1996

3285588037Remote access telephone control system
3295586169Method of ringing a call responsive apparatus which answered an immediately preceding incoming call
3305583917Method and arrangement for semipermanent storage of a service profile in personal communication systems
3315581612Private branch exchange system
3325579383Calling terminal controlled call coverage
3335579313Method of multiplexing speech signal and control signal in ISDN B-channels for an exchange system
3345577113Apparatus and method for virtual private telephone line with automatic ring down
3355577110Access to capabilities of other telephone stations
3365574870Method for the commissioning of an interface to be allocated to different transmission paths in a program-controlled communication system
3375572698System and method for allocating memory resources where the category of a memory resource determines where on a circular stack a pointer to the memory resource is placed
3385568544Routing incoming calls to a PBX in response to route requests from a host computer
3395566236System and method for re-establishing a disconnected telephone communication
3405563940System for connecting an incoming call to a selected one of a number of extensions
3415561703System and method for integration of a paging server into a private branch exchange environment
3425553124Computer-controlled telecommunications system
3435550913Network terminating unit for connecting analog and digital communication systems to a digital network
3445550906Telecommunications feature server
3455550822Private branch exchange
3465548637Method and apparatus for locating personnel and objects in response to telephone inquiries
3475541992System for connecting an incoming call to a selected one of a number of extensions
3485541983Automatic telephone feature selector
3495535269Additional direct inward dialing connection system
3505535262Electronic private exchange system having talking recording function
3515533109Telecommunication system with user modifiable PBX terminating call feature controller and method
3525521976Modular subscriber device
3535521970Arrangement for extending call-coverage across a network of nodes
3545517564Communication apparatus and method
3555515425Telecommunications system with active database
3565513258Method and apparatus for processing call number information for a switching system
3575513179Private branch exchange and line card to be used in such a private branch exchange
3585497411Telecommunications card-access system
3595490212Call-routing method for a virtual private network as well as service computer and exchange therefor
3605487110Apparatus and method for virtual private telephone line with automatic ring down
3615481605Private branch exchange capable of analyzing information received from ISDN

1995

3625479491Integrated voice-mail based voice and information processing system
3635479487Calling center employing unified control system
3645475748Automatic telephone system with function for multiple out-dialed calls per caller
3655475745Abandoned call control and indication
3665475744Private branch exchange capable of adding a calling station ID number to the call signal
3675473672Inband messaging system interface of a PBX
3685473630Telecommunications rate data base accessing
3695469501Communication exchange apparatus with switching of communication terminal information
3705469498Post-delivery support system for private branch exchanges
3715461662Electronic exchange apparatus
3725457693Data terminal control unit including table for efficiently making connections between data terminal equipments and between data terminal equipment and outside lines
3735455855System for connecting public network subscriber and private network subscriber
3745454033Apparatus and method for controlling access to a telephone
3755452351Electronic private branch exchange having an LCR function and a method of accessing a particular common carrier in that exchange
3765442622Communication system with ISDN as a backup of inter-PBX tie trunk
3775440616Method and apparatus for interconnecting a messaging system and a private branch exchange
3785440554Broadband private automatic branch exchange
3795425084Computer-controlled telecommunications system
3805425081Facsimile arrangement
3815422943Private branch exchange networks
3825422941Extension of centrex services
3835414763Apparatus and method for providing echo suppression to a plurality of telephones
3845414762Telephony controller with functionality command converter
3855414759Automatic personal search telephone system
3865412709Digital telephone station line controller
3875410591Private branch exchange with resumption of interrupted communication
3885410539Communication apparatus and method
3895404398Telephone exchange system
3905404395External-to-internal numbering plan aliasing
3915402474System, data processing method and program to provide a programmable interface between a workstation and an archive server to automatically store telephone transaction information
3925400397Private automatic branch exchange
3935392340Telephone exchange apparatus
3945392335Arrangement for preventing perpetration of toll fraud through an adjunct processor
3955388151Technique for reducing message notification blockage in voice mail systems
3965386463Low noise multi-elevator communication system and method
3975381468Telephone exchange including less display elements than channels

1994

3985375161Telephone control system with branch routing
3995363435Method and apparatus for seizing a trunk circuit in a telecommunications private branch exchange
4005363425Method and apparatus for providing a personal locator, access control and asset tracking service using an in-building telephone network
4015361299Exchange apparatus enclosing a plurality of extension terminals and connecting an extension terminal to a line wire
4025355406Integrated application controlled call processing and messaging system
4035349579Telecommunication switch with programmable communications services
4045347574Automated call screening
4055345502Establishment of connections between terminals for mobile subscribers of an interconnected network
4065341415Method and apparatus for sharing of common in-house wiring to permit multiple telephone carriers to serve the same customer
4075339356Virtual private network connecting system
4085337352Private branch exchange system having an automatic optimal route selecting mechanism
4095333183Universal MDR data record collection and reporting system
4105333182Arbitrary selecting of a terminal to be called in key telephone systems
4115333181System for accessing amenities through a public telephone network
4125329570Copy protection of software for use in a private branch exchange switch
4135325422PBX telephone call control system
4145323448System for accessing amenities through a public telephone network
4155321744Programmable telecommunication switch for personal computer
4165321743Shared-tenant services arrangement providing numbering-plan independence and cross-plan access to tenant groups
4175319640Transmitting/receiving system having digital switching network
4185317631Local switching system
4195315647Private branch exchange adapted for telemarketing
4205311580Communication apparatus for providing a modulated analog wave
4215311577Data processing system, method and program for constructing host access tables for integration of telephony data with data processing systems
4225303298Automated attendant call processor
4235303290System for elminating glare in virtual private line circuits
4245299256PBX telephone with message printer
4255291549Private branch exchange and line exchange method
4265291547Call-disposition analyzer
4275276727Remote maintenance method and device thereof in private branch exchange system

1993

4285274643Method for optimizing a network having virtual circuit routing over virtual paths
4295268904ISDN terminal equipment control method
4305265157Answer supervision and service selection
4315255314Switch adjunct integration arrangement
4325253288Alternate destination call redirection for telecommunications systems
4335249219Integration of voice store and forward facility
4345247571Area wide centrex
4355233648Direct dialing-in method in a pabx
4365222124PBX system communications device
4375214692Bypass for telephone switching system
4385200989Wide band communication system transmitting video and audio signals among a plurality of users
4395195131Private branch exchange system
4405191604Communication apparatus with private branch exchange for communicating with extension or external stations
4415187735Integrated voice-mail based voice and information processing system
4425181199Packet switching system

1992

4435175761Call transfers by voice messaging system (VMS) integrated to a private branch exchange
4445161180Call interceptor for emergency systems
4455155761Automatic call back system and method of operation
4465151930Method for personal paging a telephone private branch exchange with the assistance of a personal paging device that offers mutually different operating modes for personal paging
4475117451Interface to and operation of a voice messaging system
4485115466Communication network intended for secure transmission of speech and data
4495109405Automated call screening
4505103449PBX transparent ANI and DNIS using VRU
4515099511Exchange system for incoming calls from direct-in lines
4525099509Integration of voice store and forward facility
4535097528System for integrating telephony data with data processing systems

1991

4545062133Multi-function telephone call management system
4555029196Automated call screening
4565027387Reverse direction calling system
4575027384Personalized automatic call routing
4585027358Switch-adjunct communications protocol
4595022069Modular automatic telephone switching system
4605020099Private branch exchange
4615014269Microcomputer integrating a digital subscriber terminal for an integrated service digital network
4625008930Customer definable integrated voice/data call transfer technique
4635003595Secure dial access to computer systems
4645001710Customer programmable automated integrated voice/data technique for communication systems
4654996704Electronic messaging systems with additional message storage capability
4664991203Line switching apparatus and method
4674991196Testing communications systems

1990

4684977555Asynchronous duplex data communication for requesting services
4694975944Method of making call-wait and call-alternation in electronic private branch exchange (EPBX)
4704975941Call processor for facilitating call completions
4714972453Autonomous expert system for directly maintaining remote telephone switching systems
4724972452Digital bypass for telephone system
4734967408Telephone exchange including service feature apparatus
4744956861Method and apparatus for addressee location
4754955047Automated attendant with direct inward system access
4764951310Automatic call distribution system
4774942601Method of making a call reservation and sending an interrupt tone in a private branch exchange (PBX)
4784935958Busy/no-answer call completion equipment
4794930153PBX voice mail interface
4804928306Dynamically configurable telephone
4814928304Electronic switching system connected to an external computer
4824926462Interface to and operation of a voice messaging system
4834926461Telephone answering machine having call transfer capabilities
4844924500Carrier independent network services
4854914690Universal PBX interface
4864907262Method of transmitting dual tone multi-frequency during communication in a private branch exchange using keyphones
4874899374Method for a program-controlled telephone switching system in which performance features relating to the setup of a call connection can be initiated from a subscriber station
4884896350Arrangement for providing a call-connection service
4894893335Remote access telephone control system

1989

4904890315Cellular remote station with multiple coupled units
4914881261Method for predictive pacing of calls in a calling system
4924878239Anonymous interactive telephone system with expanded outward calling features
4934873718Feature telephone integration device
4944870680Communication apparatus having a communication hold function
4954866758Phone management server for use with a personal computer LAN
4964852158Telephone system allowing hold releasing request from central office line
4974852156Private telephone system using a personal code number to access the telephone nearest to the code number holder
4984852149Automated call filter
4994847890Anonymous interactive telephone system
5004823374Telephone exchange system with performance features activatable from an authorized subscriber station
5014811381Direct inward dial integration apparatus
5024809321Busy/no-answer call completion equipment
5034802206Calling system for enabling speech transmission from a caller to a called busy party in a telephone system
5044802199Method and apparatus for providing virtual facility communication service
5054799255Communication facilities access control arrangement
5064797915Communication system having automatic call route selection

1988

5074792967PBX DID and E and M tie trunk integration adapter and method
5084791663Telephone status recognition and bypass system
5094788682Telephone system adapted to telemarketing
5104785473Interactive audio telecommunications message storage, forwarding and retrieval system
5114783796PBX telephone call control system
5124775975Dial tone detection arrangement with a detection notification feature
5134769834Inter-exchange carrier access
5144747124PBX telephone call control system
5154731822Held party notification feature
5164727567Operator station for telephone exchange
5174726054System for interconnecting a pair of communication systems
5184723272Telecommunication system, in particular telephone system

1987

5194696028PBX Intercept and caller interactive attendant bypass system
5204685122Interface circuit for remote control of a PABX
5214680786Communication system for providing business communication features to cellular mobile telecommunication customers
5224680785Personal-signaling communication system
5234669110Call progress tone system
5244661974Automatic route selection of a private telephone network path on the basis of a public telephone network number
5254646347Ringing signal reformatting circuit
5264645879Call-routing device
5274640989Communications unit for executive work station
5284634811Call screening system

1986

5294629831Series connected interceptor
5304600812Communication system having abbreviated dialing access
5314594477PBX equipment with dial signal modification

1985

5324560837Call transfer method and circuitry
5334529841Intercept information display for a private automatic branch exchange telephone system
5344518825Telephone interconnect detection system

1984

5354488004Providing feature transparency between a plurality of PBXs
5364486626Method of and system for limiting access to a group of telephone trunks
5374484031Interface circuit for a telephone system
5384455455Internodal conference call administrator

1983

5394415773Methods of establishing a switching connection within a switching system
5404406925Message delivery system
5414401856Control system for handling direct inward dialed telephone calls
5424392129Multiplexed liquid crystal display

1981

5434297532Interfacing circuit status detection arrangement in a telephone exchange
5444289934Integrated automatic call distribution facility and PBX system
5454286118Data distribution system for private automatic branch exchange

1980

5464201885Routinable clock circuit

1979

5474147897Circuit for telephone auxiliary exchanges having delayed connection of a busy signal set
5484136264Private automatic branch exchange having two exchange units
5494132868PABX System providing multiple paths held between calling line circuits and a plurality of output circuits

1978

5504125748Communication system call transfer arrangement
5514093819Closed user group facility
5524066847Automatic call answering and sequencing system

1977

5534059734Method for transferring data into a data input during a telephone connection established over an interoffice trunk
5544058684Apparatus for direct line switching
5554028499Universal/assigned night answering system for EPABX
5564028498Private automatic branch exchange system and apparatus
5574022983Telephone switching system having automated call hold facilities
5584017690Guard circuit for ground start telephone equipment
5594002850Trunk adapter

1976

5603999018Timer associated with CB relay
5613997736Parallel control of a telephone switching network
5623996424Electronic telephone systems
5633978294Return answer-supervisory circuit
5643970800Switching arrangement for ascertaining overlap prior to transfer of code digits in a telephone exchange
5653967075Attendant board system in a telephone exchange
5663963875Universal answer arrangement for a PABX
5673956595Circuitry for providing executive ringback in a PBX system
5683944751Telephone private branch exchange system
5693944750Circuitry for providing call override in a PBX system
5703936613Camp-on detecting system for automatic telephone exchange
5713931479Telephone intercommunication system providing common access to a communication line
5723931478Telephone intercommunication system provided with a common communication line to which access is guarded
5733931477Telephone intercommunication systems
© 2017, ПАТ-Инфо, В.И. Карнышев
Дата формирования списка: 03.04.2017