Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 3 - Automatic or semi-automatic exchanges
Patents for H04M 3 - Automatic or semi-automatic exchanges (99,881)
04/1995
04/26/1995CN1102017A Telephone line overvoltage protection method and assembly
04/25/1995US5410596 Station protector module for network interface device
04/25/1995US5410593 Method and device for displaying a hold service on multifunction telephone set and an exchange
04/25/1995US5410591 Private branch exchange with resumption of interrupted communication
04/25/1995US5410589 Telephone system adapted to report to customers telephone facility traffic data
04/25/1995US5410586 Method for analyzing an IDNX network
04/25/1995US5410585 Subscriber line test system
04/25/1995US5410541 System for simultaneous analog and digital communications over an analog channel
04/25/1995US5410539 Communication apparatus and method
04/25/1995US5410537 Communications installation
04/25/1995US5410443 Telephone line overvoltage protection
04/25/1995US5410343 Video-on-demand services using public switched telephone network
04/25/1995US5410264 Adaptive impulse noise canceler for digital subscriber lines
04/20/1995WO1995010913A2 Information retrieving device
04/20/1995WO1995010912A1 Telecommunication switch having programmable network protocols and communications services
04/19/1995EP0649266A2 Mobile radio network and conference arrangement therefor
04/19/1995EP0649240A1 Communication system
04/19/1995EP0648404A1 Modular notebook computer
04/19/1995EP0648372A1 Surge arrestor fail safe thermal overload mechanism
04/18/1995US5408528 Method and apparatus for flexible and optimal telephone call acceptance and routing
04/18/1995US5408526 Conference calling system
04/18/1995US5408525 Diverter interface between two telecommunication lines and a station set
04/18/1995US5408522 Modem pooling system
04/18/1995US5408518 Teleconference system featuring a call-up
04/18/1995US5408468 Queueing system for switches having fast circuit properties
04/18/1995US5406702 Method for sealing an electrical socket and plug assembly
04/18/1995CA2045022C Key telephone interface
04/18/1995CA1335307C Electronic exchange having a conference telephone communication function and conference telephone communication method
04/13/1995WO1995010158A2 Multimedia collaboration system
04/13/1995WO1995010157A1 Multimedia collaboration system
04/13/1995DE4436175A1 Method and system for accessing a computer via a telephone handset
04/13/1995DE4430344A1 Telefonschaltanlage Telephone switchboard
04/13/1995DE4430343A1 Verfahren zum Anrufen eines Telefonteilnehmers Procedure to call a telephone subscriber
04/12/1995EP0648061A2 Method and system for connecting an optical network with a plurality of subscriber groups
04/12/1995EP0647906A1 Voice memory management method and apparatus
04/12/1995EP0647381A1 Call distributor
04/12/1995EP0647375A1 Method and apparatus for objective speech quality measurements of telecommunication equipment
04/12/1995EP0647344A1 Method for recognizing alphanumeric strings spoken over a telephone network
04/12/1995EP0520999B1 Electronic switch supply unit
04/12/1995CN2194573Y Safety device tester
04/12/1995CN1101492A System for implementing extension phones within a cellular radio telecommunications
04/11/1995US5406621 Method of automating configuration of a voice processing system
04/11/1995US5406620 Method of allocating international transit traffic among a plurality of carriers in a terminating country
04/11/1995US5406619 Universal authentication device for use over telephone lines
04/11/1995US5406616 Method of completing a telephone call in a telephone system
04/11/1995US5406557 Interenterprise electronic mail hub
04/11/1995US5406469 Electronic switching power supply
04/11/1995CA2035716C Private branch exchange system
04/09/1995CA2132804A1 Method of managing a speech memory, and apparatus therefor
04/06/1995WO1995009505A1 Subscriber-oriented control process for releasing services of a communications system
04/06/1995WO1995007593A3 Feature interaction manager
04/06/1995DE4404264C1 Circuit arrangement for complex line termination of a two-wire line in a communications device
04/06/1995DE4341888C1 Method for controlling components of a communications system
04/06/1995DE4333398A1 Method for a computer-controlled switching system to determine a device connection number
04/06/1995DE4333272A1 Communications system
04/05/1995EP0647052A1 Management system for charging of database queries in a telecommunications network
04/05/1995EP0647051A1 Telecommunication network with integrated network-wide automatic call distribution
04/05/1995EP0647050A2 Method and systems for integrating a plurality of call center agent performance enhancement modules
04/05/1995EP0647049A2 Telephone call notification feature
04/05/1995EP0646303A1 Improved telecommunication display system
04/05/1995CN1101190A Data message storage and pick up service
04/04/1995US5404455 Time division multiplexer chip for supporting alternating communication between a pair of RAMs and two different interfaces
04/04/1995US5404449 Interface module for supporting communication between processor systems
04/04/1995US5404440 Metaphor environment control system
04/04/1995US5404401 Alarm and test system for a digital added main line
04/04/1995US5404400 Outcalling apparatus
04/04/1995US5404398 Telephone exchange system
04/04/1995US5404397 Conference system with automatic speaker detection and speaker unit
04/04/1995US5404396 Feature interaction manager
04/04/1995US5404395 External-to-internal numbering plan aliasing
04/04/1995US5404389 Switching system and subscriber's circuit controlling apparatus
04/04/1995US5404388 Digital measurement of amplitude and phase of a sinusoidal signal and detection of load coil based on said measurement
04/04/1995US5404350 In a telecommunications network
04/04/1995US5404231 Sender-based facsimile store and forward facility
04/04/1995US5403999 Telecommunications systems for lotteries
03/1995
03/30/1995WO1995008893A1 Method of predicting voltages in telephone line measurement
03/30/1995WO1995008892A1 Method for permitting subscribers to change call features in real time
03/30/1995WO1995008821A1 Voice-controlled account access over a telephone network
03/30/1995CA2172406A1 Voice-controlled account access over a telephone network
03/29/1995EP0645939A2 Intelligent call processing based upon complete identification of calling station
03/29/1995EP0645923A1 Broadcast method for simultaneously connecting an announcement with plural subscribers of a communication system
03/29/1995EP0645922A2 Method for checking the switching elements of a space stage of a switching network in a TDM telecommunication exchange
03/29/1995EP0645902A1 Satellite system for data transmission between telephone branch exchanges, traffic station and transmission method therefor
03/29/1995EP0645897A2 Interface circuit with transparent impedance
03/29/1995EP0645725A2 Storing video data in a computer system
03/29/1995EP0645702A1 Load balancing method in a multiprocessor system
03/29/1995EP0645695A1 Replicating displays in a multiple computer system
03/29/1995EP0645067A1 Method of informing a subscriber in a radio telephone system of facilities activated for the subscriber station
03/29/1995CN1100882A Work at home ACD agent network
03/29/1995CN1100880A 电缆管理系统 Cable Management System
03/29/1995CN1100864A Access to capabilities of other telephone stations
03/29/1995CN1100863A Method and device for monitoring and testing non-voice business in telephone metwork
03/29/1995CN1100856A Routing multiple telephone calls using a common routing plan
03/28/1995US5402485 Two-wire termination impedance generation circuit of subscriber circuit
03/28/1995US5402484 Telephone circuit assembly
03/28/1995US5402483 Digital telephone system with terminals connected to a digital exchange unit providing all functions of the terminals
03/28/1995US5402482 Ring trip deciding circuit
03/28/1995US5402480 Call signal generating circuit
03/28/1995US5402479 Method and apparatus for translating signaling information
03/28/1995US5402478 System and method for call-by-call source routing with rule-based fallbacks
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