Telecommunication calling party number determination and manipulation

An apparatus for calling party number determination and manipulation by a network switch, the apparatus comprising:

• a network interface for receiving an incoming message having a received calling party number and for transmitting an outgoing message;
• a memory, the memory storing a database module;
• and
• a processor coupled to the network interface and to the memory, wherein the processor includes instructions to determine an entry point of the database module from at least one of a plurality of communication parameters, the plurality of communication parameters including a switch identification of the incoming message and a trunk group identification of the incoming message, and commencing with the determined entry point of the database module, to perform digit analysis of the received calling party number to determine a pattern match and to determine a selected manipulation, to perform the selected manipulation on the received calling party number to form a modified calling party number, and when a pattern match has been determined, to direct the network interface to transmit the modified calling party number in the outgoing message.

A switch for calling party number determination and manipulation, the switch comprising:

• a network interface for receiving an incoming message having a received calling party number and for transmitting an outgoing message;
• a memory storing, as a database module, a plurality of digit trees for digit analysis and a plurality of available manipulations;
• and
• a processor coupled to the network interface and to the memory, wherein the processor includes instructions to determine an entry point of the database module from at least one of a plurality of communication parameters, the plurality of communication parameters including a switch identification of the incoming message and a trunk group identification of the incoming message, and commencing with the determined entry point of the database module, to perform digit analysis of the received calling party number to determine a pattern match and to determine a selected manipulation of the plurality of available manipulations, to perform the selected manipulation on the received calling party number to form a modified calling party number;
• the processor including firther instructions, when a pattern match has been determined, to direct the network interface to transmit the modified calling party number in the outgoing message;
• the processor including firther instructions, when a pattern match has not been determined, to direct the network interface to transmit the received calling party number in the outgoing message;
• and the processor including further instructions, when an error has occurred, to direct the network interface to transmit no calling party number information in the outgoing message.