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Patent Searching and Data


Title:
GATEWAY DEVICE AND MONITORING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/176906
Kind Code:
A1
Abstract:
An unexpected call disconnection at normal time is prevented. When a gateway device 1 installed on a POI interface is receiving an RTP packet while no longer receiving an RTCP packet, an RTCP packet is generated and transmitted to the local network side or a call control signal that indicates a media transfer is going on is generated and transmitted to the local network side. Thus, it is possible to prevent an unexpected call disconnection at normal time due to a change of RTCP packet transmission conditions even when an RTCP packet disconnection is being monitored in the local network.

Inventors:
EITOKU Haruka (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
YAMAMOTO Kodai (9-11 Midori-cho 3-chome, Musashino-sh, Tokyo 85, 〒1808585, JP)
Application Number:
JP2019/009894
Publication Date:
September 19, 2019
Filing Date:
March 12, 2019
Export Citation:
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Assignee:
NIPPON TELEGRAPH AND TELEPHONE CORPORATION (5-1 Otemachi 1-chome, Chiyoda-ku Tokyo, 16, 〒1008116, JP)
International Classes:
H04L12/70; H04M3/00
Foreign References:
JP2007221217A2007-08-30
JP2011124889A2011-06-23
US20160373585A12016-12-22
Other References:
14 July 2016 (2016-07-14), Retrieved from the Internet
CISCO UNIFIED BORDER ELEMENT, 14 May 2014 (2014-05-14), Retrieved from the Internet
Attorney, Agent or Firm:
MIYOSHI Hidekazu et al. (Toranomon Kotohira Tower, 2-8 Toranomon 1-chome, Minato-k, Tokyo 01, 〒1050001, JP)
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