Method for selectively using one or two communication channel by a transmitting data terminal based on data type and channel availability

A method of providing data transmission from a transmitting terminal connected to an integrated service digital network of data to a receiving terminal using a plurality of data channels in said network, said method comprising the steps of:

• establishing at least a single channel of communication from said transmitting terminal to said receiving terminal;
• determining in said transmitting terminal if the amount of data to be transmitted from said transmitting terminal is greater than a predetermined amount and if said determination indicates that the amount of data exceeds the predetermined amount, forwarding a procedural request to said receiving terminal for access to a second channel;
• responding by said receiving terminal, and indicating the availability of a second channel as well as the capability of said receiving terminal to accept data on a plurality of channels;
• determining at said transmitting station based upon a returned signal from said receiving terminal that multiple channels may be employed, and capturing a second channel and dividing the data to be transmitted, wherein the dividing occurs in an independent first half and an independent second half;
• transmitting via a first channel the first half of said data from said transmitting station and transmitting said second half via a second channel to said receiving station over mutually independent channels and wherein said division of the data is mutually independent based upon the division that occurs in said transmitting terminal;
• transmitting via a single channel all of the data from said first terminal to said second terminal via a single channel in response to a denial of availability of multiple channel communication capability or availability of a second channel by said receiving terminal,
• wherein said request for multiple channels is dynamically performed making it possible to release the second channel based on communication conditions;
• and
• determining a type of data to be transmitted,
• wherein the step of transmitting via the first and second channels and the step of transmitting via the single channel are alternatively performed based on the type of data which has been determined.