| |
 |
|
Class Information
Number: 379/234
Name: Telephonic communications > Plural exchange network or interconnection > Interexchange signalling > Pbx to central office signalling (e.g., direct outward dialing)
Description: Subject matter which transmits control or supervisory signal from a private branch exchange to a central switching exchange.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 7627101 |
Method and apparatus for telephone routing between PTN and PSTN |
Dec. 1, 2009 |
| 7529358 |
Dynamic feature and function availability for software PBX |
May. 5, 2009 |
| 7505575 |
Method and system for processing telephone calls via a remote tie-line |
Mar. 17, 2009 |
| 7463728 |
Private branch exchange |
Dec. 9, 2008 |
| 7330443 |
Method for providing CTI services or features via communication channel having communication connections |
Feb. 12, 2008 |
| 7274786 |
Method and system for processing telephone calls via a remote tie-line |
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 |
| 7099454 |
Caller identification in a communication system |
Aug. 29, 2006 |
| 6970551 |
Method and system for identifying calls having the same originating number and destination number |
Nov. 29, 2005 |
| 6917679 |
Method for interface ISDN private automatic branch exchange and local exchange |
Jul. 12, 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 |
| 6816483 |
Switched virtual circuit call processing/routing system |
Nov. 9, 2004 |
| 6788778 |
Private branch exchange (PBX) system, private branch exchange, and method of communication using the same PBX system |
Sep. 7, 2004 |
| 6751309 |
Method and apparatus for extending calls to internal switch extensions out to external network endpoints |
Jun. 15, 2004 |
| 6744880 |
Method for creating a telephone digital switching platform |
Jun. 1, 2004 |
| 6707897 |
Private branch exchange |
Mar. 16, 2004 |
| 6704407 |
Interface for digital telecommunications system |
Mar. 9, 2004 |
| 6668052 |
Method and system for signaling in a telecommunication system |
Dec. 23, 2003 |
| 6567514 |
Method and system for processing telephone calls via a remote tie-line |
May. 20, 2003 |
| 6516058 |
Voice network access system |
Feb. 4, 2003 |
| 6480596 |
Direct inward-outward dialing trunk circuit |
Nov. 12, 2002 |
| 6463052 |
Method, system and apparatus for telecommunications control |
Oct. 8, 2002 |
| 6453034 |
Method of and system for extending internet telephony over virtual private network direct access lines |
Sep. 17, 2002 |
| 6404881 |
Exchange and an exchange system in a communication network |
Jun. 11, 2002 |
| 6351526 |
Dialing process for IP telephony |
Feb. 26, 2002 |
| 6345092 |
Switch and method of seizing outgoing trunk of same |
Feb. 5, 2002 |
| 6301353 |
Common automatic route selection leading digit strings |
Oct. 9, 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 |
| 6075852 |
Telecommunications system and method for processing call-independent signalling transactions |
Jun. 13, 2000 |
| 6058180 |
Automatic person-following communication system |
May. 2, 2000 |
| 5999608 |
Telephone exchange apparatus having an integrated services digital network interface |
Dec. 7, 1999 |
| 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 |
| 5953390 |
Device for inducing a wink in a telephone system |
Sep. 14, 1999 |
| 5949873 |
Method of providing centrex type operation using a PBX and a central switching office |
Sep. 7, 1999 |
| 5778058 |
Method of adding a new PBX and new PBX port to an existing PBX network |
Jul. 7, 1998 |
| 5651062 |
Automatic private branch exchange apparatus |
Jul. 22, 1997 |
| 5646985 |
Hierarchical switch support of services for subscribers of independent private branch exchanges |
Jul. 8, 1997 |
| 5621727 |
System and method for private addressing plans using community addressing |
Apr. 15, 1997 |
| 5587999 |
D channel packet communication system and a method of D channel packet communication |
Dec. 24, 1996 |
| 5574783 |
System and method for providing competitive access telephone service for telephones connected to a remote terminal of the monopoly service provider |
Nov. 12, 1996 |
| 5572586 |
Communication control apparatus and method and communication exchange apparatus and method |
Nov. 5, 1996 |
| 5568544 |
Routing incoming calls to a PBX in response to route requests from a host computer |
Oct. 22, 1996 |
| 5550913 |
Network terminating unit for connecting analog and digital communication systems to a digital network |
Aug. 27, 1996 |
| 5481605 |
Private branch exchange capable of analyzing information received from ISDN |
Jan. 2, 1996 |
| 5475744 |
Private branch exchange capable of adding a calling station ID number to the call signal |
Dec. 12, 1995 |
| 5473672 |
Inband messaging system interface of a PBX |
Dec. 5, 1995 |
|
|
|
