Abstract:
A transmission terminal is connected to a management device via a network. The transmission terminal includes an acquisition unit configured to acquire a communication state of another transmission terminal from the management device; a selection accepting unit configured to accept a selection of the another transmission terminal from a user to participate in an established session that has been already established for the another transmission terminal; a participation determination unit configured to determine that it is not possible to participate in the established session when the communication state of the another transmission terminal whose selection has been accepted indicates participation restriction; and a communication unit configured not to transmit a participation request to the management device when it is determined that the participation is not possible.
Abstract:
Disclosed is a transmission system to manage sessions established between a plurality of terminals for performing voice communications. The transmission system includes an acquisition part configured to receive a user's request from a user of a first terminal when a session start request is transmitted from a first terminal to a second terminal, a first sender configured to send the received user's request together with the session start request, a second sender configured to send to the second terminal the session start request from the first terminal by attaching the user's request to the session start request when the second terminal is in a communication capable status, and a presenting part configured to present the user's request to the second terminal at an arrival of an incoming call from the first terminal to the second terminal.
Abstract:
The loudspeaker includes a dome diaphragm that is made of a base material impregnated in a thermosetting resin; a cone diaphragm whose outer circumference side end portion is coupled with an outer circumference end portion of the dome diaphragm; and a voice coil having a bobbin whose one end is coupled to a back surface of the dome diaphragm, and whose outer curved surface is coupled with an inner circumference end portion of the cone diaphragm, wherein the dome diaphragm is provided with a plurality of cone-shaped projections that is formed by hardening the thermosetting resin, projecting from the back surface, and disposed in a circular pattern with a space between each other, the plurality of cone-shaped projections defining a coupling portion to which the one end of the bobbin is coupled.