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Class Information
Number: 379/231
Name: Telephonic communications > Plural exchange network or interconnection > Interexchange signalling > Central office-to-pbx signalling
Description: Subject matter including transmission of control or supervisory signals from a central office to a private branch exchange.
Sub-classes under this class:
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7580402 |
Internet protocol compliant private branch electronic exchange and a method expanding the number of controlled terminal ports |
Aug. 25, 2009 |
| 7529358 |
Dynamic feature and function availability for software PBX |
May. 5, 2009 |
| 7440561 |
Method and apparatus for selectively establishing communication with one of plural devices associated with a single telephone number |
Oct. 21, 2008 |
| 7274782 |
Method and apparatus for selectively establishing communication with one of plural devices associated with a single telephone number |
Sep. 25, 2007 |
| 7272386 |
System and method for providing location and call back information for special number calls from phone sets serviced by a privately served network |
Sep. 18, 2007 |
| 7162020 |
Method and apparatus for selectively establishing communication with one of plural devices associated with a single telephone number |
Jan. 9, 2007 |
| 7095839 |
Switching system with separate control connection to remote branch exchanges |
Aug. 22, 2006 |
| 7072459 |
Method and apparatus for Web direct-dialing connection |
Jul. 4, 2006 |
| 7069432 |
System and method for providing security in a telecommunication network |
Jun. 27, 2006 |
| 7010105 |
Format-converting device and private branch exchange system using the same, and format-converting method and memory medium storing a program to allow computer to execute the same method |
Mar. 7, 2006 |
| 6996223 |
Method, apparatus and computer program product for interactive phone call routing in a service provider network and information processing in an enterprise network |
Feb. 7, 2006 |
| 6993124 |
Control interface for linking a computer supported telephony application with a PBX switch utilizing CSTA protocols |
Jan. 31, 2006 |
| 6985575 |
Control interface for computer supported telephony applications (CSTA) protocols |
Jan. 10, 2006 |
| 6985574 |
Methods and apparatus for performing diagnostics and gathering statistics in computer supported telephony applications (CSTA) |
Jan. 10, 2006 |
| 6982985 |
Interaction of VoIP calls and cellular networks |
Jan. 3, 2006 |
| 6983043 |
Method and apparatus for automatically generating common paradigms in computer supported telephony applications (CSTA) protocols |
Jan. 3, 2006 |
| 6958979 |
SS7 network planning tool |
Oct. 25, 2005 |
| 6937703 |
Connection of a computer to a telephone exchange |
Aug. 30, 2005 |
| 6917679 |
Method for interface ISDN private automatic branch exchange and local exchange |
Jul. 12, 2005 |
| 6912388 |
Providing roaming service among private mobile switching centers |
Jun. 28, 2005 |
| 6879680 |
Method of and system for extending internet telephony over virtual private network direct access lines |
Apr. 12, 2005 |
| 6853720 |
Software call control agent |
Feb. 8, 2005 |
| 6819665 |
Private branch exchange implemented using H.323 gatekeeper |
Nov. 16, 2004 |
| 6788784 |
Circuit arrangement for signaling in telecommunications networks |
Sep. 7, 2004 |
| 6707897 |
Private branch exchange |
Mar. 16, 2004 |
| 6704407 |
Interface for digital telecommunications system |
Mar. 9, 2004 |
| 6687351 |
Method for providing telephone services for commercial classes of service |
Feb. 3, 2004 |
| 6668052 |
Method and system for signaling in a telecommunication system |
Dec. 23, 2003 |
| 6608894 |
Logging tap for digital telephone lines |
Aug. 19, 2003 |
| 6516058 |
Voice network access system |
Feb. 4, 2003 |
| 6453034 |
Method of and system for extending internet telephony over virtual private network direct access lines |
Sep. 17, 2002 |
| 6442256 |
System and method for establishing a call path through a private network |
Aug. 27, 2002 |
| 6434226 |
Incoming call control system |
Aug. 13, 2002 |
| 6345091 |
Telecommunication system and method for implementing an ISDN PBX interface |
Feb. 5, 2002 |
| 6240173 |
Virtual end office in a switched telephone network |
May. 29, 2001 |
| 6223054 |
Wireless local loop system utilizing independent central offices located in new residential and commercial developments |
Apr. 24, 2001 |
| 6205216 |
Apparatus and method for inter-network communication |
Mar. 20, 2001 |
| 6144737 |
Trunk interface circuit having function of battery feed to central office |
Nov. 7, 2000 |
| 6075852 |
Telecommunications system and method for processing call-independent signalling transactions |
Jun. 13, 2000 |
| 5974133 |
Method and apparatus for facilitating communication across multiple locations |
Oct. 26, 1999 |
| 5970130 |
Independent central office which provides local and long distance calling services to new residential and commercial developments |
Oct. 19, 1999 |
| 5953405 |
Agent-predictive routing process in call-routing systems |
Sep. 14, 1999 |
| 5940408 |
Use of redundant bits of ESF data stream to transport message-waiting signalling over FXO/FXS T-1 digital link |
Aug. 17, 1999 |
| 5912946 |
Method for detecting improper delivery of parameters, in an initial address message, from an interconnecting switch |
Jun. 15, 1999 |
| 5859855 |
Network emulator for private communication terminal equipment |
Jan. 12, 1999 |
| 5838781 |
Method and arrangement of establishing bearer capability information on a call incoming to an ISDN exchange |
Nov. 17, 1998 |
| 5790646 |
Remotely accessing special services in telephone exchange |
Aug. 4, 1998 |
| 5778058 |
Method of adding a new PBX and new PBX port to an existing PBX network |
Jul. 7, 1998 |
| 5719927 |
Apparatus and a method for controlling a collect call |
Feb. 17, 1998 |
| 5652787 |
Management system for public and private switched networks |
Jul. 29, 1997 |
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