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US 2003/0165227 A1Published application
Telephone call dialling
AssigneeInteroute Communications Limited
InventorLeon De Beer
Life of this patent
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AssigneeInteroute Communications Limited
InventorLeon De Beer
Estimating the term…
A device for making telephone calls receives input data defining a call destination. The device generates a request message which is output to a control centre, a response message then being received from the control centre identifying a preferred route for routing the call to the call destination. The routing information is utilised by the device in initiating communication with the call destination. Typically the input data is a telephone number and the dialling means initiates communication using a modified telephone number which may include a prefix obtained from routing data contained in the response message. Response messages may be stored in a cache memory to reduce the need for request messages. The device may be a mobile telephone operating in a cellular telecommunications network or may be a landline device such as telephone or facsimile machine. Where the device is a mobile telephone, the response message may include additional information such as updating information for stored preferred network and barred network tables.
A device (1) for communication with a call destination (2) via a telecommunications system (3), the device comprising;
A device as claimed in any preceding claim wherein the response message comprises protocol information (63) and wherein the initiating means is responsive to the protocol information when initiating communication with the call destination using the routing data.
A device as claimed in any preceding claim comprising a cache memory (311) operable to store the response message corresponding to respective input data and control means (30) operable to extract the routing data from a stored response message in cache memory for use by the initiating means in response to a further input of the same input data.
A device as claimed in any preceding claim comprising means (35) for storing identification information for identifying the device in use to the control centre and wherein the message generating means is operable to include the identification information in the request message.
A device as claimed in any preceding claim wherein the initiating means is operable to initiate communication in use with the control centre whereby the output means is operable to output the request message via the telecommunications system.
A device as claimed in any preceding claim wherein the device is constituted by a telecommunications terminal and wherein the input means comprises a keypad (5) for the input of the input data by a user.
A method of operating a telecommunications device for communication with a call destination via a telecommunications system, the method comprising the steps of;
A control centre (7) comprising;
A method of operating a control centre (7) comprising;
A telephone which makes a data call to receive routing information before making a call using the routing information.
Dependencies are inferred from the claim text.