Transfer function of a telephone system

• US 8,331,349 B2
• Filed: 03/23/2005
• Issued: 12/11/2012
• Est. Priority Date: 07/13/2004
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Torii, Ryoji
• Primary Examiner(s): Weidner, Timothy J
• Application Number:
  US11/086,205
• Publication Number:
  US 20060013378A1
• Time in Patent Office: 2,820 Days
• Field of Search: None
• US Class Current: 370/352
• CPC Class Codes: H04L 65/1073 Registration or de-registration
• CPC Class Codes: H04M 2201/14 Delay circuits; Timers
• CPC Class Codes: H04M 3/42272 whereby the subscriber registers to the terminals for personalised service provision

Abstract

A telephone system comprising a plurality of telephone terminals is provided. The telephone system includes a switching device connected to the telephone terminals via a communication network, and a server device connected to the communication network. The switching device includes a transfer section for transferring a call to a telephone terminal in which a transfer function is set therein to a telephone terminal at a transfer destination. Also, the server device includes a monitor section for monitoring a log-in/log-out state of a user for each of the plurality of telephone terminals. The server also includes a releasing section for releasing the setting of the transfer function on the basis of the result of the monitoring when an operation to the telephone terminal with the transfer function set therein by a log-in user satisfies a defined condition.

Claims

1. A SIP telephone system to secure user'"'"'s personal mobility, the system comprising a plurality of SIP telephone terminals, a switching device connected to the SIP telephone terminals via a communication network, and a SIP server connected to the communication network, wherein the SIP telephone system manages a log-in/log-out state at the plurality of SIP telephone terminals, and wherein:

the switching device comprises a transfer section for transferring an incoming call with a destination of a first SIP telephone terminal, on which a user has logged in and in which a transfer function is set, to a second SIP telephone terminal at a transfer destination, and

the SIP server comprises;

an internal timer for counting time; and

a releasing section, wherein;

the releasing section releases the setting of the transfer function when the internal timer counts a first predetermined time after completion of the setting of the transfer function;

the releasing section releases the setting of the transfer function when the internal timer counts a second predetermined time after termination of the incoming call at the second SIP telephone terminal;

the releasing section releases the setting of the transfer function when the user logs in a second time on the first SIP telephone terminal or logs in on a third SIP telephone terminal other than the first and second SIP telephone terminals; and

the releasing section releases the setting of the transfer function when a new transfer destination is set at a fourth SIP telephone terminal other than the first and second SIP telephone terminals, the new transfer destination being a destination other than the second and fourth SIP telephone terminals.

2. The telephone system according to claim 1, wherein the releasing section releases the transfer function setting and deletes transfer destination data after the second predetermined time.

3. The telephone system according to claim 2, wherein the releasing section releases the transfer function setting and deletes the transfer destination data on the day after the transfer function is set.

4. The telephone system according to claim 1, wherein the second predetermined time is variably set by a command input by the plurality of SIP telephone terminals.

5. The telephone system according to claim 1, wherein the communication network is a local network.

6. The telephone system according to claim 1, wherein the communication network is a wide area network including a general purpose network.

7. The telephone system according to claim 1, wherein the communication network is an IP network.

8. The telephone system according to claim 1, wherein the transfer section receives setting contents of the transfer function from the first SIP telephone terminal, after the transfer function is set in the first SIP telephone terminal.

9. A SIP telephone system to secure user'"'"'s personal mobility, the system comprising a plurality of SIP telephone terminals, and a switching device connected to the SIP telephone terminals via a communication network, wherein the SIP telephone system manages a log-in/log-out state at the plurality of SIP telephone terminals, and wherein the switching device comprises:

a transfer section for transferring an incoming call with a destination of a first SIP telephone terminal, with a user logged in and a transfer function set, to a second SIP telephone terminal at a transfer destination;

an internal timer for counting time; and

a releasing section, wherein;

the releasing section releases the setting of the transfer function when the internal timer counts a first predetermined time after completion of the setting of the transfer function;

the releasing section releases the setting of the transfer function when the internal timer counts a second predetermined time after termination of the incoming call at the second SIP telephone terminal;

the releasing section releases the setting of the transfer function when the user logs in a second time on the first SIP telephone terminal or logs in on a third SIP telephone terminal other than the first and second SIP telephone terminals; and

the releasing section releases the setting of the transfer function when a new transfer destination is set at a fourth SIP telephone terminal other than the first and second SIP telephone terminals, the new transfer destination being a destination other than the second and fourth SIP telephone terminals.

10. The telephone system according to claim 9, wherein the releasing section releases the transfer function setting and deletes transfer destination data after the second predetermined time.

11. The telephone system according to claim 10, wherein the releasing section releases the transfer function setting and deletes the transfer destination data on the day after the transfer function is set.

12. The telephone system according to claim 9, wherein the second predetermined time is variably set by a command input by the plurality of SIP telephone terminals.

13. The telephone system according to claim 9, wherein the communication network is a local network.

14. The telephone system according to claim 9, wherein the communication network is a wide area network including a general purpose network.

15. The telephone system according to claim 9, wherein the communication network is an IP network.

16. The telephone system according to claim 9, wherein the transfer section receives setting contents of the transfer function from the first SIP telephone terminal, after the transfer function is set in the first SIP telephone terminal.