System and method for maintaining a translations database to effect call control at a remote terminal

• US 8,009,808 B2
• Filed: 10/05/2006
• Issued: 08/30/2011
• Est. Priority Date: 10/05/2005
• Status: Active Grant

• Current Assignee: Intrado Life & Safety Incorporated
• Original Assignee: Intrado Incorporated (West Corporation)
• Inventors: Montoya, Alex
• Primary Examiner(s): HONG, HARRY S
• Application Number:
  US11/538,861
• Publication Number:
  US 20070121801A1
• Time in Patent Office: 1,790 Days
• Field of Search: 379/9, 379/9.02, 379/15.01, 379/32.01, 379/32.04, 379/219, 379/220.01
• US Class Current: 379/9.02
• CPC Class Codes: H04M 2242/04 for emergency applications
• CPC Class Codes: H04M 3/303 and using PCM multiplexers, e.g. pair gain systems

Abstract

A call control system comprising a control module, a translations database and a switching fabric are connected to a trunk group between a remote terminal and its controlling local switching office. The call control system monitors control signals from the switching office on the trunk. In the event of loss of control signals, the call control system intercepts requests for service, etc. from a calling telephone connected to the remote terminal and performs a look up in the translation database. If the call can be completed without the controlling switching office the call is looped back to the remote terminal. The translation database is maintained by a remote terminal OA&M interface that receives change orders from the local exchange carrier. The remote terminal OA&M interface forwards relevant changes to the call control system'"'"'s translation database.

Claims

1. A remote terminal office administration and maintenance (OA&

M) system for maintaining a call control translations database at a call control system synchronized with a local switching office translations database comprising;

a communications interface coupled with an OA&

M line to the local switching office and configured to monitor received OA&

M data on the OA&

M line and coupled to communicate with the call control system;

a database configured to keep stored OA&

M data regarding each line served by the call control system; and

a controller coupled with the communications interface and with the database and configured to receive the received OA&

M data from the communications interface and compare the received OA&

M data with the stored OA&

M data the controller and the database cooperating to save changes in the stored OA&

M data regarding each line served by the call control system in the database as the received OA&

M data is delivered to the local switching office.

2. A remote terminal OA&

M system in accordance with claim 1 wherein the communications interface is configured to monitor received OA&

M data on a plurality of OA&

M lines.

3. A remote terminal OA&

M system in accordance with claim 1 wherein the communications interface is configured to communication with a plurality of switch proxies.

4. A remote terminal OA&

M system in accordance with claim 1 wherein the database is configured to save the stored OA&

M data regarding each line served by a plurality of switch proxies.

5. A remote terminal OA&

M system in accordance with claim 1 wherein the communications interface comprises a first communications interface configured to monitor received OA&

M data on the OA&

M line and a second communications interface configured to communication with one or more call control systems.