Integrated services digital network (isdn) terminal having...

Details Integrated services digital network (isdn) terminal having... Integrated services digital network (isdn) terminal having...

H - Electricity

04

L

H04L 1/00 (2006.01) H04L 12/52 (2006.01) H04M 3/24 (2006.01) H04M 3/30 (2006.01) H04Q 11/04 (2006.01)

Patent

CA 2051146

An Integrated Services Digital Network (ISDN) 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 an office 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 for sets a remote monitor state in response to a control signal generated in accordance with the determination result from the sub-address identifying section.

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