Patent ID: 6263072
Filing Date: 2001-07-17
Classification: H04M,H04Q

Abstract:
A Computer Telephony Integration (CTI) arrangement comprisinga CTI-enabled switch,a lookup table,a CTI computer,a plurality of telephone terminals to which the CTI-enabled switch can make respective originating calls, anda corresponding plurality of computer terminals accessible by the CTI computer and being respectively associated with the plurality of telephone terminals:the CTI-enabled switch being arranged:(1) to respond to receipt of a call terminating thereon by(1a) retrieving a dialled directory number from signalling data of that terminating call, and(1b) sending to the CTI computer a route request signal including the retrieved dialled directory number of that terminating call,(2) to respond to receipt of a ring back route select signal from the CTI computer by(2a) applying ring back treatment in respect of that terminating call,(2b) holding that terminating call until receipt of a further signal from the CTI computer,(3) to respond to receipt from the CTI computer of said further signal including a directory number by causing the telephone terminal corresponding to that received directory number to ring;the lookup table being arranged to store a plurality of entries, each entry comprising a respective directory number associated with a respective user of the CTI arrangement, the identity of one of the computer terminals at which that respective user of the CTI arrangement is currently logged on and the directory number of the telephone terminal respectively associated with said one of the computer terminals; andthe CTI computer being arranged:(4) to respond to receipt from the CTI-enabled switch of that route request signal including the retrieved dialled directory number of that terminating call by(4a) sending to the CTI-enabled switch a ring back route select signal,(4b) access sing the lookup table in accordance with the retrieved dialled directory number of that terminating call to find an entry whose respective directory number associated with a respective user of the CTI arrangement matches the retrieved dialled directory number of that terminating call, that respective user being an intended recipient,(4c) upon finding such entry, retrieving from that entry the identity of said one of the computer terminals,(4d) accessing said one of the computer terminals to cause an indication to be given that an incoming call has been received, and(5) to respond to receipt of a command from the intended recipient at said one of the computer terminals by sending to the CTI-enabled switch said further signal containing the directory number of the telephone terminal associated with said one of the computer terminals.