Providing special services to a caller configured as a virtual called party
AssigneeTelefonaktiebolaget LM Ericsson
InventorLennart Soderberg
Life of this patent
Estimating the term…
Abstract
Special subscriber services are implemented by providing operator functionality and service logic within a transit exchange to equip it as a serving node. A subscriber connected to an end office coupled to the transmit exchange invokes the special services functionality by signalling such as by means of a long switch hook flash. Once invoked particular special services may be selected by DTMF or voice prompt signalling.
Claims10
A method for providing special subscriber service features within a telephone communication network which includes a pair of local end office exchanges to which one or more subscribers is connected as a calling or called party and a transit exchange coupled between said local end office exchanges, comprising the steps of:
- receiving at the transit exchange, a call from calling party authorized to receive special subscriber features, the calling party connected to a certain local end office exchange;
- subsequently receiving at the transit exchange an on-hook signal from said calling party;
- completing a call from said transit exchange back to said calling party through the certain local end office exchange from which the calling party originally called to connect the calling party to the telephone communication network as a "virtual called party";
- placing a call from said calling party as a virtual called party to an actual called party connected to another local exchange end office, the call completed through the transit exchange;
- thereafter receiving at said transit exchange a first signal from either said calling party or actual called party, said first signal comprising a switch hook flash;
- and
- recognizing within the transit exchange that said received first signal is indicative of the desire of the calling or actual called party to invoke one of a plurality of special subscriber service features.
A system for providing special subscriber service features within a telephone communication network which includes a pair of local end office exchanges to which one or more subscribers is connected as a calling or called party and a transit exchange coupled between said local end office exchanges, comprising;
- means for receiving at the transit exchange, a call from calling subscriber authorized to receive special subscriber features, the calling subscriber connected to a certain local end office exchange
- means for subsequently receiving at the transit exchange an on-hook signal from said calling party;
- means for completing a call from said transit exchange to said calling party through the certain local end office exchange from which the calling party originally called to connect the calling subscriber to the telephone communication network as a "virtual called party" and further enabling said calling subscriber to place a call as a virtual called party to an actual called party connected to another local exchange end office, the call completed through the transit exchange;
- means for thereafter receiving at said transit exchange a first signal from either said calling party or actual called party, said first signal comprising a switch hook flash;
- and
- means for recognizing within the transit exchange that said received first signal is indicative of the desire of the calling or actual called party to invoke one of a plurality of preselected special subscriber service features.
Dependencies are inferred from the claim text.