Telephone system and communication terminal

Abstract

According to one embodiment, telephone system includes terminals can make telephone communication, call processor sets links connecting terminals at outgoing callers and terminals at incoming callers in response to outgoing call requests, and status manager manages statuses of terminals, wherein the terminal comprises display displays information, display controller displays a list of partner's destinations of communication of user registered in advance onto display, call processor reports outgoing call request for setting link between a terminal selected by user from list and a terminal of user to call processor, acquisition processor acquires status information showing statuses of terminals regarding partner's destinations on list,; and management processor manages security levels of links set between terminal of user and terminals of partner's destinations on list on the basis of status information, and display controller displays security levels on display by associating with each of security levels of partner's destinations on list.

Description

technical field [0001] The present invention relates to a telephone system in which a telephone terminal and a softphone or the like realize voice conversation via an Internet Protocol (IP) network, for example, and a communication terminal used in such a telephone system. Background technique [0002] In recent years, a Voice over IP (VoIP) telephone system that performs a voice conversation using an IP network has been widely used. Such a system transmits voice packets via an open network such as the Internet. Therefore, a more advanced technology than the related art has been required for realizing secure communication by enhancing the confidentiality of information. [0003] In order to ensure the security of communication, there is a method for implementing an encryption function on a telephone terminal and authenticating the telephone terminal so that only the authenticated terminal is put on the network. However, in the current situation, systems with this capabilit...

AI Technical Summary

Problems solved by technology

However, this technique also cannot confirm the counterparty's destination situation related to security

[0005] As mentioned above, it is difficult for the existing telephone system to allow the user to predetermine the level of security that can be provided (to be supported) from the destination terminal of the other party

Accordingly, existing telephone systems do not alleviate users' uneasy feelings about the confidentiality of communications, and some measures are needed to improve the situation

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