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. 09, 2010
Filed:
Oct. 20, 2004
Yoshio Itagaki, Tokyo, JP;
Shinobu Kimata, Tokyo, JP;
Yoshio Itagaki, Tokyo, JP;
Shinobu Kimata, 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 module, an expanded SIP protocol a control module, and an expanded SIP protocol b control moduleare disposed for SIP system protocol corresponding terminals, convert signals (requests) from the SIP system protocol corresponding terminals into signals of a protocol inside an IP-PBXto transmit the signals to a PBX basic connection process providing module, and convert a signal (responses to the request, or a request to the SIP system protocol corresponding terminal) from the PBX basic connection process providing moduleinto a signal of an SIP system protocol to transmit the signal to the SIP system protocol corresponding terminal.