Fujitsu Corporation

Ryuji Oda

Junji Tagane

Masahiro Tanaka

Tomoyuki Furutono

Norimichi Hiroshige

Kazunori Umezaki

Akio Koga

Minoru Nishida

Kaori Chigusa

Ryuji Fukuhara

Katsuyuki Fujiyoshi

When a connection control device determines that the connection control device is in a congested state, based on whether a usage of at least one of hardware resources necessary for call processing to establish a call connection is equal to or more than a predetermined threshold value, the CPU of the connection control device forcefully disconnects an established call connection after a connection available time elapses, and, when an INVITE message is transmitted from a terminal device, the CPU of the connection control device receives the INVITE message, calculates the wait time, creates and transmits a response message stating the wait time, and stores the message as a reserved call on a reservation list.

Telephony system, connection control method, connection control device and recording medium

A network quality monitoring device includes a packet receiving unit that receives packets used by a signaling protocol server device that is a server device for processing the signaling protocol, a signaling protocol packet extracting unit that extracts signaling protocol packets for controlling the signaling protocol from packets received by the packet receiving unit, a session management table storing unit that stores the session management tables, a signaling protocol quality analyzing unit that collects quality information regarding the network quality from a session management table corresponding to sessions that have transitioned to a predetermined communication state among the session management tables stored in the session management table storing unit and, based on the collection result, analyzes statistical information regarding the network quality.

Network quality monitoring device and method for internet services involving signaling

A SIP serverincludes a first memorystoring a route management table in which, of route set information specified by a SIP signal on a session-by-session basis, address information as of each Record-Route header value is associated with a logical number, the same address information as of a Record-Route header values being set to the same single logical number; and a second memorystoring session information other than the address information as of each Record-Route header value, instance management information for use in session control, and logical numbers. The address information as of each Record-Route header value, which is stored in the first memoryis read on the basis of the logical numbers stored in the second memory

Server for transferring a communication message

Growing community of inventors

Fukuoka, Japan

Ryuji Oda