Patents
Sitemap › H04 - Electric communication technique › H04M - Telephonic communication › H04M 15 - Arrangements for metering, time-control or time-indication
Patents for H04M 15 - Arrangements for metering, time-control or time-indication (14,957)
10/1992
10/19/1992CA2108581A1 Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same
09/1992
09/17/1992WO1992016078A1 Mobile telephone, system and method
09/16/1992EP0503059A1 Wide area audio response network
09/15/1992US5148474 Interactive value-added telecommunications system and method
09/15/1992US5148472 Cellular telephone call administration system
09/08/1992US5146491 Telephone billing method
09/08/1992US5146490 Passive telephone line monitoring system
09/02/1992EP0501484A2 Information input/output controller and billing system for telephone lines
09/01/1992CA1307063C Anonymous interactive telephone system with expanded outward calling features
08/1992
08/26/1992EP0499702A1 Private branch exchange with information interrogation possibility
08/25/1992CA1306788C More efficient call handling for operator assistance calls
08/11/1992US5138650 Cordless telephone with internal debit and credit memory
08/04/1992US5136632 Telephone service payment system using a sound emitting token
07/1992
07/28/1992US5134651 Method and apparatus for providing answer supervision and an autonomous pay telephone incorporating the same
07/28/1992US5134646 Voice messaging method and apparatus for pay phone telephone systems
07/22/1992EP0495692A2 Call transfer method
07/15/1992CN2110322U Time and count device for telephone
07/14/1992US5131027 Short time validity storage
07/09/1992WO1992011725A1 A telecommunications terminal
07/08/1992EP0493895A1 Telephone network credit card calling apparatus and method of operation
07/08/1992EP0493894A1 Telephone network credit card calling apparatus and method of operation
06/1992
06/24/1992EP0491497A1 Method and apparatus for the billing of value-added communication calls
06/17/1992DE4039970A1 Telephone call tariff indication device - uses microprocessor calculating tariff charge fed to visual display and speech synthesiser
06/03/1992CN2106457U Dynamic information charge calculating machine for dial telephone
06/03/1992CN1061692A Toll ticketing record generation for billing of intersystem handoff calls in mobile telephone system
06/03/1992CN1016926B Multi-exchange transmission system for program-control telephone fee-counting data
05/1992
05/20/1992EP0486204A1 Apparatus and method to perform validation of credit cards in an ISDN network
05/14/1992CA2046736A1 Cellular telephone call detail recording system
05/12/1992US5113433 Method and apparatus for altering the access format of telephone calls
05/12/1992US5113430 Enhanced wide area audio response network
05/06/1992EP0483857A2 Automatic billing system controller
05/05/1992US5111161 Pll with lock detector for detecting a specified signal in a plurality of input signals
04/1992
04/30/1992WO1992007327A1 Telecommunications booth and method of use
04/29/1992EP0483091A2 Toll ticketing record generation for billing of intersystem handoff calls in a mobile telephone system
04/29/1992EP0483088A1 A circuit for generating metering pulses intended for presentation to a telecommunication subscriber
04/28/1992US5109408 Arrangement for intentionally blocking telephone calls to predefined destination numbers but allowing such blocking to be selectively overridden
04/28/1992US5109401 Radio telecommunication apparatus capable of controlling call charges
04/22/1992EP0481879A1 Device for emitting signal sequences constituting a payment means
04/22/1992EP0481482A2 Auxiliary unit for home telephone allowing use of prepaid cards
04/16/1992WO1992006548A1 Enhanced wide area audio response network
04/16/1992DE4030125C1 Telephone exchange system - has direct dialling function for registering location time and tariff of distant and direct service area
04/15/1992EP0480622A2 Automation of telephone operator assistance calls
04/07/1992US5103475 Processing of telecommunications call billing data
04/02/1992WO1992005650A1 Interface between mobile telecommunication stations and trunks that link to communication carriers
03/1992
03/28/1992WO1992006549A1 Cordless telephone with internal debit and credit memory
03/28/1992CA2089367A1 Cordless telephone with internal debit and credit memory
03/25/1992EP0324735B1 Automatic voice processing assisted customer information system
03/25/1992CN2100063U Automatic counter for public telephone
03/11/1992EP0474555A2 Multi-media communication apparatus
03/10/1992US5095505 Efficient flexible special service call processing
03/04/1992CN1059244A Chronometric and counting device for telephone set
03/03/1992US5093858 Method and apparatus for performing an automated collect call
02/1992
02/26/1992EP0472156A2 Method of accounting fees in switching system and apparatus for performing same
02/25/1992CA1296414C Inter-exchange carrier access selection feature for a pbx user
02/04/1992US5086457 Prepayment data transmission system
01/1992
01/14/1992CA1294346C Telephone system for connecting a customer to a supplier of goods
01/01/1992CN1057559A Microcomputer-controlled manual long distance telephone management system
12/1991
12/31/1991US5077682 Apparatus and method for displaying duration of a call made over a central office line in a keyphone system
12/27/1991EP0433343A4 Improvements in mobile pay telephone system
12/18/1991EP0311607B1 Shared flexible rating of telecommunications calls
12/04/1991EP0459337A1 User access method to subscription data for a cordless telephone service
12/01/1991CA2043292A1 Method for giving a user access to wireless telephone service subscription data
11/1991
11/28/1991WO1991018468A1 Real time cellular phone rental system and method
11/27/1991CN1056611A Terminal system for service desk of numerically program-controlled exchanger
11/23/1991WO1991018467A1 Cellular phone rental system
11/23/1991CA2083515A1 Cellular telephone system with remote programming, voice responsive registration, and real time billing
11/05/1991US5063591 Toll ticketing record generation for billing of intersystem handoff calls in a mobile telephone system
10/1991
10/31/1991WO1991016779A1 Long distance telephone switching system with enhanced subscriber services
10/24/1991CA2222659A1 Long distance telephone switching system with enhanced subscriber services
10/23/1991EP0452591A2 Method and apparatus for the billing of value-added communication calls
10/23/1991CN2087407U Account device of exchanger for long-distance call
10/09/1991EP0451057A1 System for paying services by telephone
10/09/1991EP0450045A1 Telephone system used for the distribution of advertising messages
09/1991
09/25/1991EP0448369A2 Control of a card interface for access to an apparatus such as a telephone
09/25/1991EP0448048A2 A signal detecting circuit for detecting a signal specified in a designated frequency
09/10/1991US5048079 SMDR translator
09/03/1991US5046085 Interfacing system for an international-type pay-telephone
08/1991
08/13/1991US5040177 Access network for a cordless telephone service
07/1991
07/31/1991EP0438860A2 Arrangement for blocking or allowing telephone calls to predefined destinations
07/31/1991CN1013424B Equipment and method for monitoring digital subscribers in telephone network
07/23/1991CA1286759C Telephone toll service with advertising
07/23/1991CA1286757C Call data collection and modification of received call distribution
07/09/1991US5031208 Data communication system and apparatus for transmitting data on a line and interrupting data transmission when an accounting pulse is detected on the line
06/1991
06/26/1991EP0433343A1 Improvements in mobile pay telephone system
06/25/1991US5027388 Method of selecting the most cost effective cellular service plan provided by cellular telephone resellers to multi-line customers
06/25/1991US5027387 Reverse direction calling system
06/19/1991EP0432866A2 Line interface unit
06/05/1991EP0430578A2 Telephone interface circuit
05/1991
05/22/1991EP0306520A4 Telephone call monitoring, metering and selection device
05/07/1991CA1283987C Communication services method and apparatus
05/02/1991WO1991006187A1 Telephone system used for the distribution of advertising messages
05/02/1991EP0425038A1 Method and device for connecting an apparatus to that terminal of the electricity mains which has the lowest impedance to earth compared with the other terminal
05/02/1991EP0424495A1 Voice messaging for pay phone telephone systems.
04/1991
04/16/1991US5008929 Billing system for telephone signaling network
04/02/1991CA1282479C Automated operator assistance calls with voice processing
03/1991
03/26/1991US5003585 System for the payment of telephone calls in a private self-switching unit
03/26/1991US5003584 Method and apparatus for the billing of value-added communication calls
03/07/1991WO1991003023A1 Billing system
03/05/1991CA1281110C Shared flexible rating of telecommunications calls
02/1991
02/27/1991CN1049579A Access network for cordless telephone service
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