ISDN terminal having diagnostic function

Details ISDN terminal having diagnostic function ISDN terminal having diagnostic function

1991-09-11

1992-09-22

Schreyer, Stafford D.

Telephonic communications

Telephone line or system combined with diverse electrical...

Having transmission of a digital message signal over a...

379442, 379105, H04M 342, H04M 1100, H04M 900

Patent

active

051504022

ABSTRACT:
An ISDN terminal adapter having a diagnostic function includes a terminal adapter section, an S/T pointer interface section, a D channel control section, a sub-address identifying section, and a remote monitor section. The terminal adapter section has a data rate converting function for communication with a terminal of a distant station connected to an ISDN. The S/T point interface section converts an output signal from the terminal adapter section into a protocol of the ISDN. The D channel control section receives D channel information from the distant station through the S/T point interface section and extracts a sub-address from the D channel information. The sub-address identifying section determines whether the sub-address of the D channel information input from the D channel control section coincides with a predetermined code. The remote monitor section sets a remote monitor state in response to a control signal generated in accordance with the determination result from the sub-address identifying section.

REFERENCES:
patent: 4995109 (1991-02-01), Arizumi et al.

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