Fujitsu Corporation

Kouji Sakata

Kazuhiro Nakashima

Ryoko Tamura

Hidefumi Takaoka

Tadashi Nakano

Toshitsugu Kobayashi

Hiroyuki Kadosono

Masaki Bansho

Tsukasa Iwanaga

Syoichi Urata

Yutaka Aoki

Shinji Kuriyama

A network device with integrated topology discovery functions adapted to virtual local area networks (VLANs). VLAN segments are mapped on a network system formed from multiple network devices. One network device creates and broadcasts a query packet for topology discovery in each VLAN, in response to a command from a management console linked to that network device. At each receiving network device, a query packet receiver receives the query packet, and a reply packet is produced by a reply packet generator. A reply packet transmitter sends the produced reply packet back to the requesting network device. A query packet transmitter forwards the received query packet to neighboring subordinate network devices.

Network device with VLAN topology discovery functions

A wireless communication terminal including a wireless communication unit for receiving and transmitting voice signals between terminals connected through a voice channel and a data channel, a signal input/output unit for inputting and outputting voice signals for voice communication and a mixing unit, interposed between the wireless communication unit and signal input/output unit, for performing mixing operations to create a first mixed signal to be output to said signal input/output unit and second mixed signals each to be transmitted to the corresponding terminal. The wireless communication terminal is preferably used for wireless voice communication performed by three or more terminals without being interposed by a center apparatus (such as a server) or a repeater. Further, signal-receiving/transmitting is set for each wireless communication terminal whereupon convenience can be improved.

Wireless communication terminal

Growing community of inventors

Yokohama, Japan

Kouji Sakata