Fiber optic based subscriber terminal

• US 6,246,750 B1
• Filed: 11/08/1999
• Issued: 06/12/2001
• Est. Priority Date: 02/23/1996
• Status: Expired due to Term

• Current Assignee: Xylon LLC (Intellectual Ventures LLC)
• Original Assignee: Alcatel-Lucent USA, Inc. (Nokia Corporation)
• Inventors: Ehreth, David
• Primary Examiner(s): LEGREE, TRACY MICHELLE
• Application Number:
  US09/436,787
• Time in Patent Office: 582 Days
• Field of Search: 379/56.2, 379/39, 379/37, 379/32, 379/33, 379/210, 379/212, 455/552, 455/426, 455/74.1, 455/417, 455/494, 455/465, 455/462, 455/404, 455/403
• US Class Current: 379/56.2
• CPC Class Codes: H04B 10/25752 Optical arrangements for wireless networks
• CPC Class Codes: H04W 88/06 adapted for operation in multiple networks or having at least two operational modes, e.g. multi-mode terminals
• CPC Class Codes: H04W 92/12 between access points and access point controllers

Abstract

A subscriber terminal (22) within a business/residence (32) is in communications with a telecommunications network (12) through a fiber optic connection (33) to an optical network unit (20). Telephony signals are transmitted to and from the subscriber terminal to a user through a cordless telephone handset (26). During normal operation, the cordless telephone handset (26) operates in a cordless mode, passing telephony signals to a subscriber terminal telephone antenna (24) for transmission on the fiber optic connection (33). In the event of a power outage at the business/residence (32), the cordless telephone handset (26) switches to a wireless mode in order to continue to provide telephony communications. In the wireless mode, telephony communications are provided from the cordless telephone handset (26) to the telecommunications network (12) through a wireless telephone provider (14).

Claims

1. A telecommunications system, comprising:

an optical network unit operable to communicate telephony signals over a fiber optic connection;

a subscriber terminal operable to exchange telephony signals with the optical network unit through the fiber optic connection; and

a handset operable to exchange the telephony signals carried by the fiber optic connection with the subscriber terminal in a cordless mode during normal operation, the handset operable to exchange the telephony signals with a wireless communication system in a wireless mode upon a loss of power to the optical network unit.

2. The system of claim 1, wherein the optical network unit provides telephony signals to the subscriber terminal from a telecommunications network.

3. The system of claim 1, wherein the optical network unit provides telephony signals to the subscriber terminal from a wireless telephone provider.

4. The system of claim 3, wherein the handset communicates with the wireless telephone provider upon the loss of power to the optical network unit.

5. The system of claim 1, wherein the handset, is operable to exchange telephony signals with the optical network unit in a wireless mode upon a loss of power to the subscriber terminal.

6. The system of claim 5, wherein the optical network unit provides telephony signals to the handset from a telecommunications network.

7. The system of claim 5, wherein the optical network unit provides telephony signals to the handset from a wireless telephone provider.

8. The system of claim 1, wherein the handset automatically switches from cordless mode to wireless mode upon detecting a loss of power to the optical network unit.

9. The system of claim 1, wherein the handset includes a manual switch in order to place the handset in either the cordless mode or the wireless mode.

10. A local telecommunications system, comprising:

a subscriber terminal operable to exchange telephony signals over a fiber optic connection;

a handset operable to exchange the telephony signals carried by the fiber optic connection with the subscriber terminal, the handset operable to function in a wireless mode in order to exchange the telephony signals with a wireless telephone provider upon detection of a loss of power to an optical source providing the telephony signals on the fiber optic connection.

11. The system of claim 10, wherein the handset automatically switches to wireless mode upon detection of the loss of power to the optical source providing the telephony signals on the fiber optic connection.

12. The system of claim 11, wherein the handset is operable to exchange telephony signals in a wireless mode with the optical source.

13. The system of claim 12, wherein the wireless telephone provider exchanges the telephony signals with the handset through the optical source.

14. The system of claim 13, wherein the handset exchanges the telephony signals with the optical source, upon detecting a loss of power to the subscriber terminal.