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:
Feb. 24, 2009
Filed:
Oct. 20, 2004
Takanori Hiroshima, Tokyo, JP;
Minako Takai, Tokyo, JP;
Takanori Hiroshima, Tokyo, JP;
Minako Takai, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
There is disclosed a private branch exchange in which an SIP terminal is capable of receiving great variety of services provided by the private branch exchange without upgrading version of software of the SIP terminal itself. A standard SIP protocol control moduleand an expanded SIP protocol control moduleare disposed for SIP corresponding terminals, convert signals from an SIP system protocol corresponding terminal into signals of a protocol inside an IP-PBX 1 to transmit the signals to a PBX basic connection process providing module, and convert signals from the PBX basic connection process providing moduleinto signals of an SIP system protocol to transmit the signals to the SIP system protocol corresponding terminal. A PBX additional service providing moduleand the PBX basic connection process providing moduleprovide additional services in response to an hooking operation from the SIP corresponding terminal or an input of a number for starting the service.