The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 31, 1999
Filed:
Jul. 03, 1997
Yoshikazu Kobayashi, Tokyo, JP;
NEC Corporation, , JP;
Abstract
An ISDN communication apparatus of the present invention can accept termination of information when this information is received even when there is no idle B channel. The ISDN communication apparatus comprises at least one ISDN line interface (1) connected to the ISDN line, a multiplex link forming circuit (3) connected to a plurality of B channels to form a logical link through the multiplex conversion and a point R interface (2) connected to the logical link formed of the multiplex link forming circuit. When the D-ch interface(12) detects the distant party address from the termination information from the distant communication apparatus, the main control circuit (4) compares the distant party address with the previously set reference address to detect whether these are matched or not. When these addresses are matched, the switch circuit (31) releases at least one communication channel from a plurality of B channels in the busy condition and forms a new logical link between the released B channel and the point R interface of the responsive terminal.