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Class Information
Number: 379/224
Name: Telephonic communications > Plural exchange network or interconnection > Tandem switching center
Description: Subject matter having a switching center or office located intermediate between an originating and receiving switching office for switching the trunks connected to such offices.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7583795 |
Switched-access network optimization methodology |
Sep. 1, 2009 |
| 7505575 |
Method and system for processing telephone calls via a remote tie-line |
Mar. 17, 2009 |
| 7453869 |
Carrier based call release |
Nov. 18, 2008 |
| 7292687 |
Capability negotiation in a telecommunications network |
Nov. 6, 2007 |
| 7274786 |
Method and system for processing telephone calls via a remote tie-line |
Sep. 25, 2007 |
| 7170988 |
Method and apparatus for network communication |
Jan. 30, 2007 |
| 7099447 |
System and method for modifying package service subscriptions online |
Aug. 29, 2006 |
| 6611586 |
System and method for edge switch query using advanced intelligent network protocol |
Aug. 26, 2003 |
| 6574328 |
Telephone call control system for the public switched telephone network |
Jun. 3, 2003 |
| 6567514 |
Method and system for processing telephone calls via a remote tie-line |
May. 20, 2003 |
| 6532288 |
Tandem access control processor connected to the public switched telephone network for controlling features |
Mar. 11, 2003 |
| 6529596 |
Web-based control of telephone |
Mar. 4, 2003 |
| 6526138 |
System and method for edge switch query using advanced intelligent network protocol |
Feb. 25, 2003 |
| 6317487 |
Method for managing message by using a personal computer as an operator console in a private branch exchange system |
Nov. 13, 2001 |
| 6209108 |
Method for testing VDSL loops |
Mar. 27, 2001 |
| 6195425 |
Telecommunications system with wide area internetwork control |
Feb. 27, 2001 |
| 6148073 |
Network centric call processing architecture using distributed call segments |
Nov. 14, 2000 |
| 6091720 |
Dynamically controlled routing using dynamic management of intra-link traffic to virtual destination nodes |
Jul. 18, 2000 |
| 6047055 |
Number portability with database query |
Apr. 4, 2000 |
| 6026154 |
Interoffice multiparty connection method and exchange |
Feb. 15, 2000 |
| 6002757 |
Number portability using enhanced routing table |
Dec. 14, 1999 |
| 5999614 |
Telecommunications system architecture |
Dec. 7, 1999 |
| 5995612 |
Telecommunications system architecture |
Nov. 30, 1999 |
| 5982869 |
System and method for automatically generating a routing plan for international telephony |
Nov. 9, 1999 |
| 5974133 |
Method and apparatus for facilitating communication across multiple locations |
Oct. 26, 1999 |
| 5956396 |
Class-of-service automatic routing |
Sep. 21, 1999 |
| 5953403 |
Method for preventing call congestion on outgoing trunks of a local telephone exchange |
Sep. 14, 1999 |
| 5930348 |
Dynamically controlled routing of calls in intelligent networks |
Jul. 27, 1999 |
| 5915009 |
Number portability using ISUP message option |
Jun. 22, 1999 |
| 5903571 |
Distributed transit private branch exchange |
May. 11, 1999 |
| 5892819 |
Call forward managed rerouting |
Apr. 6, 1999 |
| 5862208 |
Method and system for enabling a party to change terminals during a call |
Jan. 19, 1999 |
| 5844981 |
Method and system of improved routing to WATS |
Dec. 1, 1998 |
| 5841854 |
Wireless telephone integration system and method for call centers and workgroups |
Nov. 24, 1998 |
| 5838769 |
Method of reducing risk that calls are blocked by egress switch or trunk failures |
Nov. 17, 1998 |
| 5703938 |
Method of optimizing access trunk configurations and system therefor |
Dec. 30, 1997 |
| 5640319 |
Switch control methods and apparatus |
Jun. 17, 1997 |
| 5539815 |
Network call routing controlled by a management node |
Jul. 23, 1996 |
| 5539817 |
Wide area centrex toll service with novel translation |
Jul. 23, 1996 |
| 5537464 |
Method and apparatus for the billing of value-added communication calls |
Jul. 16, 1996 |
| 5526414 |
Dynamically controlled routing using virtual nodes |
Jun. 11, 1996 |
| 5524142 |
Method and apparatus for the billing of value-added communication calls |
Jun. 4, 1996 |
| 5502759 |
Apparatus and accompanying methods for preventing toll fraud through use of centralized caller voice verification |
Mar. 26, 1996 |
| 5422943 |
Private branch exchange networks |
Jun. 6, 1995 |
| 5377262 |
Telecommunication switching system having adaptive routing switching nodes |
Dec. 27, 1994 |
| 5375167 |
Telecommunication switching system having distributed dialing plan hierarchy |
Dec. 20, 1994 |
| 5327433 |
Digital tandem channel unit interface for telecommunications network |
Jul. 5, 1994 |
| RE34529 |
Arrangement for providing a call-connection service |
Feb. 1, 1994 |
| 5249222 |
Host remote signalling in telephone systems |
Sep. 28, 1993 |
| 5235630 |
Emergency call station identification system and method |
Aug. 10, 1993 |
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