Patent ID: 6256294
Filing Date: 2001-07-03
Classification: H04J,H04M,H04Q

Abstract:
A method of placing a call from an integrated services digital network (ISDN) telecommunications device over a communication circuit comprising the steps of:(a) providing said ISDN telecommunications device with a dialing mechanism that includes overlap mode ISDN dialing and enbloc mode ISDN dialing; and(b) causing said ISDN telecommunications device to place a call over said communication circuit in accordance with said dialing mechanism provided in step (a); and whereinsaid overlap mode ISDN dialing of said dialing mechanism provided in step (a) is operative, when executed in step (b), to transmit an overlap mode call set-up message that causes a network communications device coupled to said communication circuit to send back a call set-up acknowledgement message, and is thereafter operative to transmit a cascaded sequence of D channel information messages, each containing the identification of a respective digit of a called number.