A method and apparatus are provided for communicating audio information over a computer network. A standard telephone connected to the public switched telephone network (PSTN) may be used to communicate with any other PSTN-connected telephone, where a computer network, such as the Internet, is the transmission facility instead of conventional telephone transmission facilities, such as the interexchange or intralata facilities. In addition to telephone-telephone communication, telephone-computer and computer-telephone communication is also possible. The originator of a conversation (calling party) dials the number of an access port for the computer network. The call is routed to a central office switching system which is connected to the PSTN and then to the access port which is a specialized computer system (ITS node). The caller transmits the number of the desired party (the called party) to the specialized computer system (ITS node) which interfaces between the telephone switching... |
Citations|
| US4630262 | May 20, 1985 | Dec 16, 1986 | International Business Machines Corp. | Method and system for transmitting digitized voice signals as packets of bits | | US4771425 | Oct 29, 1984 | Sep 13, 1988 | StrataCom, Inc. | Synchoronous packet voice/data communication system | | US4866704 | Mar 16, 1988 | Sep 12, 1989 | California Institute of Technology | Fiber optic voice/data network | | US5115431 | Sep 28, 1990 | May 19, 1992 | Stratacom, Inc. | Method and apparatus for packet communications signaling | | US5483589 | Mar 30, 1993 | Jan 9, 1996 | Fujitsu Limited | Apparatus and method for routing control for composite network | | US5526353 | Dec 20, 1994 | Jun 11, 1996 | | System and method for communication of audio data over a packet-based network | | US5594784 | Apr 27, 1993 | Jan 14, 1997 | Southwestern Bell Technology Resources, Inc. | Apparatus and method for transparent telephony utilizing speech-based signaling for initiating and handling calls | | US5608786 | Feb 13, 1995 | Mar 4, 1997 | Alphanet Telecom Inc. | Unified messaging system and method | | US5726984 | Oct 5, 1995 | Mar 10, 1998 | Norand Corporation | Hierarchical data collection network supporting packetized voice communications among wireless terminals and telephones | | US5764741 | Jul 21, 1995 | Jun 9, 1998 | CallManage Ltd. | Least cost rooting system |
Referenced by|
| US6363064 | Jun 4, 1998 | Mar 26, 2002 | NEC Corporation | ATM-based private network having short-cut speech path and transit signaling path | | US6370120 | Dec 24, 1998 | Apr 9, 2002 | MCI WorldCom, Inc. | Method and system for evaluating the quality of packet-switched voice signals | | US6430178 | Jul 21, 1998 | Aug 6, 2002 | Matsushita Electric Industrial Co., Ltd. | Internet telephone apparatus, communication system utilizing wide area data communication network, and terminal adapter | | US6463051 | Jul 17, 1997 | Oct 8, 2002 | Intertel, Inc. | Internet calling system | | US6473423 | Sep 14, 1998 | Oct 29, 2002 | Net2Phone, Inc. | Method and system for interactive communication between two telephone sets via the internet | | US6487196 | May 29, 1998 | Nov 26, 2002 | 3Com Corporation | System and method for simulating telephone use in a network telephone system | | US6493324 | Mar 29, 1999 | Dec 10, 2002 | WorldCom, Inc. | Multimedia interface for IP telephony | | US6553061 | Feb 8, 2001 | Apr 22, 2003 | WorldCom, Inc. | Method and apparatus for detecting a waveform | | US6600733 | Feb 6, 1997 | Jul 29, 2003 | Verizon Laboratories Inc. | System for interconnecting packet-switched and circuit-switched voice communications | | US6661779 | Mar 1, 2002 | Dec 9, 2003 | Caritas Technologies, Inc. | Dial up telephone conferencing system controlled by an online computer network | | US6687351 | Dec 7, 1999 | Feb 3, 2004 | BellSouth Intellectual Property Corporation | Method for providing telephone services for commercial classes of service | | US6690654 | Oct 1, 1998 | Feb 10, 2004 | MCI Communications Corporation | Method and system for multi-media collaboration between remote parties | | US6697357 | Jul 15, 2002 | Feb 24, 2004 | | Call management messaging system for integrating the internet with the public switched telephone network | | US6700884 | Jun 20, 2002 | Mar 2, 2004 | | Integrating the Internet with the public switched telephone network | | US6704305 | Jun 20, 2002 | Mar 9, 2004 | | Integrated device for integrating the internet with the public switched telephone network | | US6704309 | Dec 21, 1998 | Mar 9, 2004 | Matsushita Electric Industrial, Co., Ltd. | Internet telephone apparatus and internet telephone gateway system | | US6711241 | Nov 17, 1999 | Mar 23, 2004 | Verizon Services Corp. | Internet telephone service | | US6754181 | Nov 18, 1996 | Jun 22, 2004 | MCI Communications Corporation | System and method for a directory service supporting a hybrid communication system architecture | | US6760322 | Mar 17, 1998 | Jul 6, 2004 | Fujitsu Limited | CTI Control System | | US6807257 | Mar 2, 1999 | Oct 19, 2004 | Webley Systems, Inc. | Computer, internet and telecommunications based network | | US6810036 | Dec 31, 1998 | Oct 26, 2004 | Nortel Networks Limited | Caller IP address | | US6819663 | Mar 16, 1998 | Nov 16, 2004 | Fujitsu Limited | Internet telephone system | | US6832254 | Jul 18, 2000 | Dec 14, 2004 | Nortel Networks Limited | Method and apparatus for associating an end-to-end call identifier with a connection in a multimedia packet network | | US6888794 | Nov 13, 2000 | May 3, 2005 | Nortel Networks Limited | Method of data rate exchange for transmissions across a packet-based network | | US6909708 | Nov 18, 1996 | Jun 21, 2005 | MCI Communications Corporation | System, method and article of manufacture for a communication system architecture including video conferencing | | US6918034 | Sep 29, 1999 | Jul 12, 2005 | Nokia, Corporation | Method and apparatus to provide encryption and authentication of a mini-packet in a multiplexed RTP payload | | US6928070 | Dec 20, 2002 | Aug 9, 2005 | | Integrating the internet with the public switched telephone network | | US6931001 | Jun 16, 2003 | Aug 16, 2005 | Verizon Laboratories Inc. | System for interconnecting packet-switched and circuit-switched voice communications | | US6970557 | Dec 22, 2003 | Nov 29, 2005 | NVG, Inc. | Cordless telephone-to-sound card interface adapter having a hybrid transformer circuit | | US6973477 | Jun 7, 2000 | Dec 6, 2005 | | System for securely communicating amongst client computer systems | | US6982973 | Nov 22, 2002 | Jan 3, 2006 | MCI, Inc. | Multimedia interface for IP telephony | | US6985559 | Feb 8, 2001 | Jan 10, 2006 | MCI, Inc. | Method and apparatus for estimating quality in a telephonic voice connection | | US7006625 | May 18, 2004 | Feb 28, 2006 | NVG, Inc. | Cordless telephone-to-sound card interface adapter with hybrid transformer and control circuit | | US7061901 | Sep 7, 1999 | Jun 13, 2006 | Way2Call Communications Ltd. | Data network and PSTN telephony system | | US7076431 | Apr 9, 2004 | Jul 11, 2006 | Parus Holdings, Inc. | Robust voice browser system and voice activated device controller | | US7085230 | Feb 7, 2001 | Aug 1, 2006 | MCI, LLC | Method and system for evaluating the quality of packet-switched voice signals | | US7085563 | Feb 2, 2004 | Aug 1, 2006 | The Boeing Company | Fail-over of forward link equipment | | US7099282 | May 30, 2001 | Aug 29, 2006 | MCI, Inc. | Determining the effects of new types of impairments on perceived quality of a voice service | | US7099446 | Sep 12, 2003 | Aug 29, 2006 | BellSouth Intellectual Property Corporation | Method for providing telephone services for commercial classes of service | | US7106726 | Jul 18, 2003 | Sep 12, 2006 | Fonefriend Systems, Inc. | Internet switch box, system and method for internet telephony | | US7110391 | Mar 3, 2000 | Sep 19, 2006 | Nortel Networks Limited | Transporting telephony signaling over a data network | | US7110748 | Apr 5, 2001 | Sep 19, 2006 | America Online, Inc. | Telephone call manager | | US7145898 | Nov 18, 1996 | Dec 5, 2006 | MCI Communications Corporation | System, method and article of manufacture for selecting a gateway of a hybrid communication system architecture | | US7149208 | Sep 25, 1996 | Dec 12, 2006 | Net2Phone, Inc. | Method and apparatus for providing caller identification based responses in a computer telephony environment | | US7170887 | Oct 16, 2001 | Jan 30, 2007 | Lucent Technologies Inc. | Methods and apparatus for providing voice communications through a packet network | | US7185199 | Aug 30, 2002 | Feb 27, 2007 | Xerox Corporation | Apparatus and methods for providing secured communication | | US7197030 | Jul 17, 2001 | Mar 27, 2007 | British Telecommunications public limited company | Processing device network | | US7200150 | Jun 24, 2002 | Apr 3, 2007 | Level 3 Communications, Inc. | System and method for bypassing data from egress facilities | | US7212522 | Jul 8, 2004 | May 1, 2007 | Cisco Technology, Inc. | Communicating voice over a packet-switching network | | US7216348 | Jan 4, 2000 | May 8, 2007 | Net2Phone, Inc. | Method and apparatus for dynamically balancing call flow workloads in a telecommunications system | | US7269247 | Sep 15, 2004 | Sep 11, 2007 | Anip, Inc. | Efficient communication through networks | | US7275156 | Sep 5, 2003 | Sep 25, 2007 | Xerox Corporation | Method and apparatus for establishing and using a secure credential infrastructure | | US7295660 | Dec 30, 2003 | Nov 13, 2007 | AOL LLC | Telemarketer screening | | US7327720 | Jul 15, 2002 | Feb 5, 2008 | | Integrated telephone central office systems for integrating the internet with the public switched telephone network | | US7327723 | Jun 25, 2004 | Feb 5, 2008 | Parus Holdings, Inc. | Computer, internet and telecommunications based network | | US7333478 | May 13, 2003 | Feb 19, 2008 | | Methods and apparatus for transporting digital audio-related signals | | US7334024 | Feb 10, 2005 | Feb 19, 2008 | Cyberfone Technologies, Inc | System for transmission of voice and data over the same communications line | | US7336649 | Dec 20, 1995 | Feb 26, 2008 | Verizon Business Global LLC | Hybrid packet-switched and circuit-switched telephony system | | US7386455 | Apr 24, 2006 | Jun 10, 2008 | Parus Holdings, Inc. | Robust voice browser system and voice activated device controller | | US7392387 | Feb 26, 2007 | Jun 24, 2008 | Xerox Corporation | Apparatus and methods for providing secured communication | | US7408919 | May 9, 2000 | Aug 5, 2008 | InfoInteractive | Internet based telephone line | | US7426271 | Apr 25, 2003 | Sep 16, 2008 | Palo Alto Research Center Incorporated | System and method for establishing secondary channels | | US7454619 | Sep 5, 2003 | Nov 18, 2008 | Palo Alto Research Center Incorporated | Method, apparatus, and program product for securely presenting situation information | | US7483417 | Feb 15, 2006 | Jan 27, 2009 | Verizon Services Corp. | Telephony communication via varied redundant networks | | US7486660 | Jul 23, 2001 | Feb 3, 2009 | Verizon Services Corp. | Transport of caller identification information through diverse communication networks | | US7486662 | Dec 22, 2003 | Feb 3, 2009 | Arbinet-thexchange, Inc. | Method and system of managing connections between circuit-switched and packet-switched networks | | US7486667 | May 3, 2006 | Feb 3, 2009 | Centre One | Method and apparatus for interfacing a public switched telephone network and an internet protocol network for multi-media communication | | US7491123 | Jul 29, 2004 | Feb 17, 2009 | Nintendo Co., Ltd. | Video game voice chat with amplitude-based virtual ranging | | US7492757 | Feb 19, 2008 | Feb 17, 2009 | Verizon Business Global LLC | Hybrid packet-switched and circuit-switched telephony system | | US7516190 | Feb 6, 2001 | Apr 7, 2009 | Parus Holdings, Inc. | Personal voice-based information retrieval system | | US7522542 | Nov 10, 2003 | Apr 21, 2009 | Caritas Technologies, Inc. | Dial up telephone conferencing system controlled by an online computer network | | US7529200 | Jul 23, 2004 | May 5, 2009 | 3E Technologies International, Inc. | Method and system for fast setup of group voice over IP communications | | US7529225 | Nov 18, 2002 | May 5, 2009 | Ibasis, Inc. | System and method for voice over internet protocol (VoIP) and facsimile over internet protocol (FoIP) calling over the internet | | US7549047 | Nov 21, 2002 | Jun 16, 2009 | Xerox Corporation | Method and system for securely sharing files | | US7552322 | Jun 24, 2004 | Jun 23, 2009 | Palo Alto Research Center Incorporated | Using a portable security token to facilitate public key certification for devices in a network | | US7564840 | Feb 12, 2003 | Jul 21, 2009 | Level 3 Communications, LLC | Voice over data telecommunications network architecture | | US7581096 | Sep 5, 2003 | Aug 25, 2009 | Xerox Corporation | Method, apparatus, and program product for automatically provisioning secure network elements | | US7653002 | Apr 16, 2004 | Jan 26, 2010 | Verizon Business Global LLC | Real time monitoring of perceived quality of packet voice transmission | | US7656864 | Oct 17, 2006 | Feb 2, 2010 | Openwave Systems Inc. | Data network computing device call processing | | US7664097 | Mar 22, 2004 | Feb 16, 2010 | Verizon Services Corp. | Telephone service via networking | | US7715371 | Oct 30, 2006 | May 11, 2010 | Comcast IP Holdings I, LLC | Method and apparatus for accessing communication data relevant to a target entity identified by a number string | | US7720081 | Jan 26, 2007 | May 18, 2010 | Level 3 Communications, LLC | System and method for bypassing data from egress facilities | | US7724766 | Mar 31, 2005 | May 25, 2010 | Siemens Aktiengesellschaft | High-density wireless local area network | | US7724879 | Aug 24, 2007 | May 25, 2010 | Anip, Inc. | Efficient communication through networks | | US7757076 | Apr 30, 2004 | Jul 13, 2010 | Palo Alto Research Center Incorporated | Method and apparatus for using a secure credential infrastructure to access vehicle components | | US7778395 | Apr 12, 2007 | Aug 17, 2010 | Cyberfone Technologies, Inc. | Telephone/transaction entry device and system for entering transaction data into databases | | US7785197 | Jul 29, 2004 | Aug 31, 2010 | Nintendo Co., Ltd. | Voice-to-text chat conversion for remote video game play | | US7804816 | Feb 25, 2005 | Sep 28, 2010 | Comcast IP Holdings I, LLC | Method and apparatus for accessing communication data relevant to a target entity identified by a number string | | US7804821 | Jun 16, 2003 | Sep 28, 2010 | Bridgeport Networks, Inc. | Circuit switched cellular network to internet calling with internet antennas | | US7808977 | Oct 30, 2007 | Oct 5, 2010 | Genesys Telecommunications Laboratories, Inc. | Network telephony interface systems between data network telephony and plain old telephone service | | US7813332 | Feb 7, 2005 | Oct 12, 2010 | Verizon Services Corp. | Voice call alternative routing through PSTN and internet networks | | US7817619 | Feb 28, 2000 | Oct 19, 2010 | Verizon Services Corp. | Internet long distance telephone service | | US7835344 | Jul 23, 2001 | Nov 16, 2010 | Verizon Services Corp. | Transport of caller identification information through diverse communication networks | | US7852831 | Feb 22, 2005 | Dec 14, 2010 | | Method and system for providing private virtual secure Voice over Internet Protocol communications | | US7869425 | Oct 30, 2007 | Jan 11, 2011 | Verizon Services Corp. MCI Communications Corporation Verizon Communications Inc. | System and method for providing requested quality of service in a hybrid network | | US7881941 | Feb 13, 2008 | Feb 1, 2011 | Parus Holdings, Inc. | Robust voice browser system and voice activated device controller | | US7889722 | Oct 18, 2005 | Feb 15, 2011 | Bear Creek Technologies, Inc. | System for interconnecting standard telephony communications equipment to internet protocol networks | | US7903641 | Feb 20, 2009 | Mar 8, 2011 | Comcast IP Holdings, I, LLC | Method and apparatus for accessing communication data relevant to a target entity identified by a number string | | US7904720 | Nov 6, 2002 | Mar 8, 2011 | Palo Alto Research Center Incorporated | System and method for providing secure resource management | | US7916861 | Sep 28, 2006 | Mar 29, 2011 | Palo Alto Research Center Incorporated | System and method for establishing secondary channels | | US7937089 | Sep 5, 2003 | May 3, 2011 | Palo Alto Research Center Incorporated | Method, apparatus, and program product for provisioning secure wireless sensors | | US7937752 | Feb 18, 2009 | May 3, 2011 | Palo Alto Research Center Incorporated | Systems and methods for authenticating communications in a network medium | | US7948968 | Nov 2, 2004 | May 24, 2011 | Verizon Communications Inc. Verizon Services Corp. | Network session management | | US8036214 | Jul 20, 2007 | Oct 11, 2011 | Level 3 Communications, LLC | Voice over data telecommunications network architecture | | US8068437 | Apr 11, 2005 | Nov 29, 2011 | Verizon Business Global LLC | Determining the effects of new types of impairments on perceived quality of a voice service | | US8077844 | Mar 24, 2009 | Dec 13, 2011 | Xugave Holding DE LLC | Dial up telephone conferencing system controlled by an online computer network | | US8085761 | Jul 20, 2007 | Dec 27, 2011 | Level 3 Communications, LLC | Voice over data telecommunications network architecture | | US8089958 | Jul 20, 2007 | Jan 3, 2012 | Level 3 Communications, LLC | Voice over data telecommunications network architecture | | US8094647 | Jun 14, 2001 | Jan 10, 2012 | Verizon Services Corp. MCI Communications Corporation Verizon Communications Inc. | System and method for providing requested quality of service in a hybrid network | | US8094800 | Mar 19, 2007 | Jan 10, 2012 | AOL Inc. | Call treatment based on user association with one or more user groups | | US8098600 | Feb 1, 2010 | Jan 17, 2012 | Parus Holdings, Inc. | Computer, internet and telecommunications based network | | US8125955 | Jun 9, 2008 | Feb 28, 2012 | Siemens Aktiengesellschaft | High-density wireless local area network | | US8125982 | Jan 26, 2009 | Feb 28, 2012 | Centre One | Providing real-time voice communication between devices connected to an internet Protocol network and devices connected to a public switched telephone network | | US8149822 | Aug 5, 2008 | Apr 3, 2012 | Infointeractive Corp. | Internet based telephone line | | US8156337 | Apr 3, 2006 | Apr 10, 2012 | Palo Alto Research Center Incorporated | Systems and methods for authenticating communications in a network medium | | US8170008 | Feb 20, 2009 | May 1, 2012 | Comcast IP Holdings I, LLC | Method and apparatus for accessing communication data relevant to a target entity identified by a number string | | US8185402 | Dec 20, 2010 | May 22, 2012 | Parus Holdings, Inc. | Robust voice browser system and voice activated device controller | | US8189565 | Feb 20, 2009 | May 29, 2012 | Comcast IP Holdings I, LLC | Method and apparatus for accessing communication data relevant to a target entity identified by a number string | | US8194646 | Oct 30, 2007 | Jun 5, 2012 | Verizon Services Corp. MCI Communications Corporation Verizon Communications Inc. | System and method for providing requested quality of service in a hybrid network | | US8204046 | Aug 9, 2010 | Jun 19, 2012 | Comcast IP Holdings I, LLC | Method and apparatus for accessing service resource items that are for use in a telecommunications system | | US8223752 | Feb 9, 2012 | Jul 17, 2012 | Comcast IP Holdings I, LLC | Method for accessing service resource items that are for use in a telecommunications system | | US8228905 | Mar 12, 2004 | Jul 24, 2012 | Fujitsu Limited | CTI control system |
Claims1. A method of routing a full duplex telephone call between a first telephone set and a second telephone set using a public computer network as at least part of a communication link connecting said first and second telephone sets, comprising the steps of: - receiving at a first computer network access port a first telephone call from a central office placed from said fist telephone set initiating said full duplex telephone call, said first telephone call specifying a telephone number of said second telephone set, without specifying additional telephone destinations;
- converting data received from the central office to an Intenet protocol;
- establishing a communication link over said public computer network between said first computer network access port and a remote second computer network access port;
- placing a second telephone call from said second computer network access port to said second telephone set using a PSTN;
- converting data received from the public computer network from Intenet protocol to a PSTN protocol; and
- connecting said first telephone call, said communication link and said second telephone call to thereby establish a telephone call between said first telephone set and said second telephone set.
2. The method of claim 1 further comprising the step of: - receiving said first telephone call from a public switched telephone network.
3. The method of claim 2 further comprising the step of: - placing said second telephone call using said public switched telephone network.
4. The method of claim 1 further comprising the step of: - placing said second telephone call using a public switched telephone network.
5. The method of claim 1, wherein said first telephone call is the only call which is required to be placed by said first telephone set to effect communication with said second telephone set. 6. The method of claim 2 wherein said computer network is at least a portion of an Internet computer network. 7. The method of claim 6 wherein said first and second computer network access ports are first and second telephone switches and further comprising the steps of: - using a telephone network interface device to receive said first telephone call;
- using a computer network call manager device to answer said first telephone call;
- routing said first telephone call from said telephone network interface device to a voice resources module for processing and then routing said first telephone call to said computer network call manager device;
- using a call initiation module to establish a connection through said computer network to said second computer network telephone switch;
- transmitting call setup information from said call initiation module to said second computer network telephone switch; and
- transmitting information contained in said first telephone call from said computer network call manager device to said second computer network telephone switch.
8. The method of claim 7 further comprising the step of: - determining the least cost routing procedure for routing said first telephone call from said first computer network telephone switch to said second telephone set.
9. The method of claim 8 further comprising the step of: - routing said first telephone call from said first computer network telephone switch to said second telephone set using said public switched telephone network based on the least cost routing procedure.
10. The method of claim 8 wherein the determining step comprises the further step of: - performing a hierarchical search based on information indicative of said second telephone set.
11. The method of claim 7 further comprising the step of: - performing at least one of data compression, echo cancellation and noise filtering on the information contained in said first telephone call.
12. The method of claim 7 further comprising the steps of: - receiving, at a call acceptance module, information contained in said second telephone call from said second computer network telephone switch;
- routing said information contained in said second telephone call to said computer network call manager and then to said voice resources module for processing; and
- routing said information contained in said second telephone call from said voice resources module to said telephone network interface device for transmission to said first telephone set as part of said first telephone call.
13. A system for routing a full duplex telephone call between a first telephone set and a second telephone set using a public computer network as at least part of a communication link connecting said first and second telephone sets, comprising: - a first computer network access port which receives a first telephone call from a central office placed from said first telephone set initiating said full duplex telephone call, said first telephone call specifying a telephone number of said second telephone set, without specifying additional telephone destinations;
- a first protocol conversion module converting data received from the central office to an Intenet protocol;
- a communication link over a public computer network between said first computer network access port and a second computer network access port;
- a calling circuit which places a second telephone call from said second computer network access port to said second telephone set using a PSTN;
- a second protocol conversion module converting data received from the public computer network from Internet protocol to a PSTN protocol; and
- a call management circuit which connects said first telephone call, said communication link and said second telephone call to thereby establish a telephone call between said fist telephone set and said second telephone set.
14. The system of claim 13 further comprising: - a public switched telephone network interface circuit which receives said first telephone call through said public switched telephone network.
15. The system of claim 14 further comprising: - a second public switched telephone network interface circuit which places said second telephone call through said public switched telephone network.
16. The system of claim 13 wherein said public switched telephone network interface circuit places said second telephone call through said public switched telephone network. 17. The system of claim 13, wherein said first telephone call is the only call which is required to be placed by said first telephone set to effect communication with said second telephone set. 18. The system of claim 14 wherein said computer network comprises an Internet computer network connection. 19. The system of claim 18 wherein said first and second access ports are first and second telephone switches further comprising: - a telephone network interface device which receives said first telephone call;
- a computer network call manager device which answers said first telephone call;
- said computer network call manager device routing said first telephone call from said telephone network interface device to a voice resources module for processing and routing said first telephone call to said computer network call manager device;
- a call initiation module which establishes a connection through said computer network to said second computer network telephone switch;
- a call setup information circuit which transmits call setup information from said call initiation module to said second computer network telephone switch; and
- said computer network call manager device transmitting information contained in said first telephone call from said computer network call manager device to said second computer network telephone switch.
20. The system of claim 19 further comprising: - a least cost routing system for determining a least cost routing procedure for routing said first telephone call from said first computer network telephone switch to said second telephone set.
21. The system of claim 20 wherein said computer network call manager device routes said first telephone call from said first computer network telephone switch to said second telephone set using said public switched telephone network based on the least cost routing procedure. 22. The system of claim 20 wherein the least cost routing system comprises a hierarchical search system which searches based on information indicative of said second telephone set. 23. The system of claim 19 further comprising: - at least one of a data compression circuit, an echo cancellation circuit and a noise filter which operates on the information contained in said first telephone call.
24. The system of claim 19 further comprising: - a call acceptance module which receives information contained in said second telephone call from said second computer network telephone switch;
- said computer network call manager device routing said information contained in said second telephone call to said voice resources module for processing and then to said telephone network interface device for transmission to said first telephone set as part of said first telephone call.
|