System and method for connecting portable information equipment and extension telephone

• US 20040105430A1
• Filed: 10/02/2003
• Published: 06/03/2004
• Est. Priority Date: 11/29/2002
• Status: Active Grant

• Current Assignee: NEC Corporation
• Original Assignee: NEC Infrontia Corporation (NEC Corporation)
• Inventors: Kobayashi, Yoshikazu, Zen, Toshiaki
• Granted Patent: US 7,394,805 B2
• Time in Patent Office: Days
• US Class Current: 370/352
• CPC Class Codes: H04L 12/14 Charging , metering or billing arrangements for data wireline or wireless communications
• CPC Class Codes: H04L 63/0272 Virtual private networks
• CPC Class Codes: H04L 63/08 for authentication of entities cryptographic mechanisms or cryptographic arrangements for entity authentication H04L9/32
• CPC Class Codes: H04M 15/00 Arrangements for metering, time-control or time indication ; Metering, charging or billing arrangements for voice wireline or wireless communications, e.g. VoIP
• CPC Class Codes: H04M 15/63 based on the content carried by the session initiation protocol [SIP] messages
• CPC Class Codes: H04M 15/8005 Flat-fee
• CPC Class Codes: H04M 15/8292 Charging for signaling or unsuccessful connection
• CPC Class Codes: H04M 2215/2026 Wireless network, e.g. GSM, PCS, TACS
• CPC Class Codes: H04M 2215/2033 WLAN
• CPC Class Codes: H04M 2215/32 Involving wireless systems
• CPC Class Codes: H04W 4/24 Accounting or billing

Abstract

A system for connecting a portable information equipment and an extension telephone, comprises: an extension telephone connecting device for connecting the portable information equipment to an extension telephone system after authentication through a virtual private network (VPN); and a Voice over Internet Protocol (VoIP) connecting device for connecting the portable information equipment connected to the extension telephone system to the extension telephone connected to the extension telephone system by VoIP. This system enables a temporary staff to make a call from outside to an extension telephone system in a dispatched company while maintaining security.

Claims

1. A system for connecting a portable information equipment and an extension telephone, comprising:

extension telephone connecting means for connecting the portable information equipment to an extension telephone system after authentication through a virtual private network (VPN); and

Voice over Internet Protocol (VoIP) connecting means for connecting the portable information equipment connected to the extension telephone system to the extension telephone connected to the extension telephone system by VoIP.

2. The system according to claim 1, further comprising:

charging means for charging to the portable information equipment.

3. The system according to claim 1,

wherein the portable information equipment can access, by the VPN, a database connected to the VPN.

4. A method for connecting a portable information equipment and an extension telephone, comprising:

an extension telephone connecting step of connecting the portable information equipment to an extension telephone system after authentication through a virtual private network (VPN); and

a Voice over Internet Protocol (VoIP) connection executing step of connecting the portable information equipment connected to the extension telephone system to the extension telephone connected to the extension telephone system by VoIP.

5. The method according to claim 4, further comprising:

a charging step of charging to the portable information equipment.

6. The method according to claim 4,

wherein the portable information equipment can access, by the VPN, a database connected to the VPN.