Patent ID: 7496186
Filing Date: 2009-02-24
Classification: H04L,H04M

Abstract:
1. An outside-LAN (Local Area Network) connectable IP (Internet Protocol) key telephone system, comprising: a key telephone system main unit, configured to accommodate a plurality of IP extension terminal units, for switching calls with outside lines; and a key telephone system terminal unit, disposed outside the LAN, for accessing the key telephone system main unit through an IP network and for functioning as an IP extension terminal unit, wherein said key telephone system terminal unit comprises: log-in means for logging in to an IP address of the key telephone system main unit with predetermined first ID and password, wherein said key telephone system main unit comprises: means for authenticating the first ID and password received from the key telephone system terminal unit, registering the key telephone system terminal unit as an IP extension terminal unit, and allowing the key telephone system terminal unit to voice communicate with another IP extension terminal unit in accordance with the Voice over Internet Protocol (VoIP) without allowing the key telephone system terminal unit to access directory information in a database in the key telephone system main unit, wherein said key telephone system terminal unit registered as an IP extension terminal unit with the key telephone system main unit further comprises, log-on means for logging on to the key telephone system main unit with predetermined second ID and password, and means for displaying a portal site for accessing information stored in the database, when the log-on means has logged on to the key telephone system terminal unit, and wherein said key telephone system main unit further comprises, means for authenticating the second ID and password received from the key telephone system terminal unit and permitting the key telephone system terminal unit to access the directory information stored in the database.