Interactive contextual-based assistance for portable ISDN test set

An integrated services digital network (ISDN) telecommunications device comprising an ISDN transceiver, and a supervisory control processor which is operative to cause said ISDN transceiver, when coupled to a communication circuit, to controllably transmit and receive ISDN communication messages over said communication circuit, and having a user interface through which alpha-numeric messages associated with the operation of said ISDN test set are presentable to said user, an input/output element that is selectably operated by said user, and a contextual-based alpha-numeric database, contents of which are associated with and provide additional information of said alpha-numeric messages that are presentable by said test set user interface, and wherein said supervisory control processor is operative, in response to operation of said input/output element by said user, to cause said test set user interface to present an alpha-numeric informational message derived from said contents of said contextual-based database, in accordance with contextual content of an alpha-numeric messages presented by said test set user interface, wherein said supervisory control processor is operative, in response to operation of said input/output element, when said test set user interface generates a message transmitted to said test set from telecommunication equipment in association with the use of said test set, to cause said test set user interface to generate a detailed explanation of said message, and in response to a second operation of said input/output element, implementing a referential help database search subroutine.