ISDN call processing

摘要

Method and apparatus for setting up a connection between a first terminal and a second terminal over an Integrated Services Digital Network (ISDN) link having one or more bearer channels that allow a user-selected protocol are provided. The terminals support a plurality of possible software protocols for use on the bearer channels. In order to facilitate new types of ISDN protocols on an existing system, the method includes the step of separating the protocol software into a generic module containing generic ISDN encoding/decoding protocols and into protocol specific modules containing specific types of ISDN encoding/decoding protocols.