Method for DTMF transfer by RTP

United States of America Patent

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Aug 17, 2010
Grant Date
Jun 8, 2006
app pub date
Aug 31, 2005
filing date
Dec 2, 2004

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Abstract

stores voice-data DTMF corresponding to the coded DTMF information into a payload of RTP and transfers the information to the SIP terminal of the other network.

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Patent Owner(s)

Patent Owner	Address
HITACHI LTD	6-6 MARUNOUCHI 1-CHOME CHIYODA-KU TOKYO 100-8280

International Classification(s)

H04L:TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAP....

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[Patents Count]

Inventor(s)

Inventor Name	Address	# of filed Patents	Total Citations
Hirokawa, Masahito	Fukushima-ken, JP	2	10
Kumada, Makoto	Fukushima-ken, JP	4	39
Ono, Masayuki	Fukushima-ken, JP	121	741
Sato, Yusuke	Fukushima-ken, JP	150	783
Yamaguchi, Yoshie	Fukushima-ken, JP	1	3

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Method for DTMF transfer by RTP

Number of patents in Portfolio can not be more than 2000

United States of America Patent

11214863

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PATENT NO	7778243
APP PUB NO	20060120344A1
SERIAL NO	11214863
DOCKET NO

US Family Size	Non-US Coverage
Patent Longevity	Forward Citations

DATE PUBLISHED	PUBLICATION/PATENT NO.	PUBLICATION TYPE
August 17, 2010	US,7778243,B2 US7778243B2	GRANTED PATENT AS SECOND PUBLICATION
June 08, 2006	US,20060120344,A1 US20060120344A1	FIRST PUBLISHED PATENT APPLICATION

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11214863

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