Fujitsu Corporation

Naoyuki Kakizaki

Satoru Abe

Kiyomi Hasesaka

Hiroyasu Taguchi

Yayoi Itoh

Yoshikazu Takeda

Nobuaki Kitazumi

Takahito Suzuki

Hiroki Yokoyama

Kiyoshi Hirouchi

Takahiro Kikuchi

Saiki Kawamura

Katsuhisa Sato

A group communications switching method is disclosed. The method includes the steps of: maintaining a voice call between a first subscriber terminal and a second subscriber terminal when it becomes necessary to perform group communications while the voice call is in progress; starting a group communications call by the first subscriber terminal so as to call at least a group communications member other than the first subscriber terminal and the second subscriber terminal; and disconnecting the voice call between the first subscriber terminal and the second subscriber terminal when the group communications call is established.

Group communications switching method, subscriber terminal and server used for the method

A system for delivering a caller's phone number to a called subscriber in an Internet telephony system. A calling subscriber (caller) first makes a call to its local server (caller-side server) to request an Internet-based call connection to a remote subscriber (callee). A first transmission unit, disposed in a caller-side local switch, transmits the caller's phone number to the caller-side server through a first control channel. A second transmission unit disposed in the caller-side server then transmits, over the Internet, the caller's phone number to another server (caller-side server) that is local to the callee. The caller's phone number is now available in the callee-side server. A caller number acquisition unit, disposed in the callee-side local switch, makes access to that information by using a second control channel. In this way, the callee-side local switch obtains the phone number of the caller.

Apparatus for providing caller ID services in internet telephony system

Growing community of inventors

Kawasaki, Japan

Naoyuki Kakizaki