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104 results about "Telephone number mapping" patented technology

Telephone number mapping is a system of unifying the international telephone number system of the public switched telephone network with the Internet addressing and identification name spaces. Internationally, telephone numbers are systematically organized by the E.164 standard, while the Internet uses the Domain Name System (DNS) for linking domain names to IP addresses and other resource information. Telephone number mapping systems provide facilities to determine applicable Internet communications servers responsible for servicing a given telephone number using DNS queries.

Method and apparatus for synchronizing ported number data

A method of synchronizing ported number data within a telecommunications network in which a number portability administration center has received a request from a subscriber having a directory number (DN) to port is provided. The method comprises the steps of: a Number Portability data manager sending a subscription request to the NPDB to receive future notifications about subscriber ports to / from specific Location Routing Number(s); the NPDB honoring these subscriptions when a user ports their DN. If this is the initial LRN assigned to the DN, then the NPDB derives the LRN of the code holder. If the LRN from which the subscriber ported has a subscription, then the NPDB sends a notification message to the NP data manager with which the LRN is associated indicating that the DN ported out. If the LRN to which the subscriber ported has a subscription, then the NPDB sends a notification message to the NP data manager with which the LRN is associated indicating that the DN ported in. The method further comprises receiving a notification message for the LRN at a number portability data manager, wherein: if the notification message indicates that a DN has ported in, then the number portability data manager sends a request to an ENUM (telephone number mapping) server to turn the entry for that DN on; and if the notification message indicates that a DN has ported out, then the number portability data manager sends requests to the ENUM server and to a subscriber database to turn the entry for that DN off.
Owner:LUCENT TECH INC

Number portability communication method, and calling side/called side service control point server

The invention belongs to the technical field of communication networks, and relates to a number portability communication method, and a calling side/called side service control point server. The method comprises the following steps: receiving a call invitation message sent by a calling side call session control function entity; judging whether a calling number corresponding to a first terminal anda called number corresponding to a second terminal belong to the same group user; if the calling number and the called number do not belong to the same group user, performing, by a calling side service control point server, domain selection on a called user, and querying the location information of the called user; sending, by the calling side service control point server, the call invitation message to the calling side call session control function entity according to the location information of the called user, so that the calling side call session control function entity and a telephone number mapping server/domain name system initiate a query request of querying a name authority pointer record of the called number; and routing, by the calling side call session control function entity,the call to an IMS domain and mutual communication network elements of other networks according to a called domain name.
Owner:CHINA UNITED NETWORK COMM GRP CO LTD
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