Voice over internet protocol codec adjustment
View Patent ↗A system for changing the coder-decoder utilized during a voice over Internet protocol telephone call is disclosed. The system includes two local area networks connected to each other via a wide area network. Each local area network includes a router connected to the wide area network, a switch connected to the router and a voice over Internet protocol telephone connected to the switch. The voice over Internet protocol telephones are configured to detect when voice packets are being dropped and utilize a lower bandwidth coder-decoder.
1. A system comprising:
a VoIP service provider system having a call control gatekeeper, a first interface and a second interface;
the first interface connected to a first LAN having an interface to a first VoIP telephone;
the second interface connected to a second LAN having an interface to a second VoIP telephone;
the first and second VoIP telephones being configured to communicate using a first codec;
the call control gatekeeper configured to receive a call quality signal from the first VoIP telephone and send an adjustment signal based on the call quality signal to the first and second VoIP telephones instructing the first and second VoIP telephones to communicate using a second codec; and
wherein the adjustment signal based on the call quality signal is sent to the first and second VoIP telephones during a telephone call between the first and second VoIP telephones.
2. A system comprising:
a VoIP service provider system having a call control gatekeeper, a first interface and a second interface;
the first interface connected to a first LAN having an interface to a first VoIP telephone;
the second interface connected to a second LAN having an interface to a second VoIP telephone;
the first and second VoIP telephones being configured to communicate using a first codec;
the call control gatekeeper configured to receive a call quality signal from the first VoIP telephone and send an adjustment signal based on the call quality signal to the first and second VoIP telephones instructing the first and second VoIP telephones to communicate using a second codec; and
wherein the call quality signal is based upon a number of dropped voice packets during a VoIP telephone call.
3. A system comprising:
a VoIP service provider system having a call control gatekeeper, a first interface and a second interface;
the first interface connected to a first LAN having an interface to a first VoIP telephone;
the second interface connected to a second LAN having an interface to a second VoIP telephone;
the first and second VoIP telephones being configured to communicate using a first codec;
the call control gatekeeper configured to receive a call quality signal from the first VoIP telephone and send an adjustment signal based on the call quality signal to the first and second VoIP telephones instructing the first and second VoIP telephones to communicate using a second codec; and
a primary WAN and a secondary WAN connection between the first LAN and the VoIP service provider system for connecting the first LAN to the VoIP service provider system, the secondary WAN provides a backup connection when the call quality signal indicates that the primary WAN is inoperative.
4. The system of claim 3 , wherein a bandwidth of the secondary WAN is less than a bandwidth of the primary WAN.
5. The system of claim 3 , wherein the call control gatekeeper is configured to detect and send an adjustment signal to the VoIP telephones instructing the VoIP telephones to change the codec of the VoIP telephone call when the primary WAN is inoperative.
6. A system comprising:
a VoIP service provider system having a call control gatekeeper, a first interface and a second interface;
the first interface connected to a first LAN having an interface to a first VoIP telephone;
the second interface connected to a second LAN having an interface to a second VoIP telephone;
the first and second VoIP telephones being configured to communicate using a first codec;
the call control gatekeeper configured to receive a call quality signal from the first VoIP telephone and send an adjustment signal based on the call quality signal to the first and second VoIP telephones instructing the first and second VoIP telephones to communicate using a second codec;
a public switched telephone network; and
a gateway in communication with the router of the first LAN and the public switched telephone network, the gateway configured to provide access to the public switched telephone network from the VoIP telephone of the first LAN.
7. A system for changing a codec of a VoIP telephone call, the system comprising:
a primary WAN;
a first LAN in communication with the primary WAN;
a second LAN in communication with the primary WAN;
the first and second LANs each individually having a router, a switch in communication with the router and an interface to a VoIP telephone in communication with the switch, where the primary WAN transmits voice packets of a VoIP telephone call between the VoIP telephones connected to the interfaces of the first and second LANs;
the VoIP telephones connected to the interfaces of the first and second LANs are configured to communicate to each other using voice packets, measure the quality of the VoIP telephone call and change a codec of the VoIP telephone call based on a measured quality of the VoIP telephone call; and
wherein the quality of the VoIP telephone call is measured by a number of dropped voice packets.
8. A system for changing a codec of a VoIP telephone call, the system comprising:
a primary WAN;
a first LAN in communication with the primary WAN;
a second LAN in communication with the primary WAN;
the first and second LANs each individually having a router, a switch in communication with the router and an interface to a VoIP telephone in communication with the switch, where the primary WAN transmits voice packets of a VoIP telephone call between the VoIP telephones connected to the interfaces of the first and second LANs;
the VoIP telephones connected to the interfaces of the first and second LANs are configured to communicate to each other using voice packets, measure the quality of the VoIP telephone call and change a codec of the VoIP telephone call based on a measured quality of the VoIP telephone call; and
wherein the first LAN further comprises a call control gatekeeper in communication with the router configured to receive a call quality signal from the VoIP telephone of the first LAN and send an adjustment signal based on the call quality signal to the VoIP telephones instructing the VoIP telephones to change the codec of the VoIP telephone call.
9. A system for changing a codec of a VoIP telephone call, the system comprising:
a primary WAN;
a first LAN in communication with the primary WAN;
a second LAN in communication with the primary WAN;
the first and second LANs each individually having a router, a switch in communication with the router and an interface to a VoIP telephone in communication with the switch, where the primary WAN transmits voice packets of a VoIP telephone call between the VoIP telephones connected to the interfaces of the first and second LANs;
the VoIP telephones connected to the interfaces of the first and second LANs are configured to communicate to each other using voice packets, measure the quality of the VoIP telephone call and change a codec of the VoIP telephone call based on a measured quality of the VoIP telephone call;
a secondary WAN in communication with the routers of the first and second LANs for transferring the voice packets between the VoIP telephones when the primary WAN is inoperative; and
the VoIP telephones being configured to detect when the primary WAN is inoperative and change the codec of the VoIP call when the call quality signal indicates that the primary WAN is inoperative.
10. The system of claim 9 , wherein the first LAN further comprises a call control gatekeeper configured to receive a call quality signal from the VoIP telephone of the first LAN and send an adjustment signal based on the call quality signal to the VoIP telephones instructing the VoIP telephones to change the codec of the VoIP telephone call.
11. A system for changing a codec of a VoIP telephone call, the system comprising:
a primary WAN;
a first LAN in communication with the primary WAN;
a second LAN in communication with the primary WAN;
the first and second LANs each individually having a router, a switch in communication with the router and an interface to a VoIP telephone in communication with the switch, where the primary WAN transmits voice packets of a VoIP telephone call between the VoIP telephones connected to the interfaces of the first and second LANs;
the VoIP telephones connected to the interfaces of the first and second LANs are configured to communicate to each other using voice packets, measure the quality of the VoIP telephone call and change a codec of the VoIP telephone call based on a measured quality of the VoIP telephone call; and
wherein the bandwidth of the primary WAN is greater than the bandwidth of the primary WAN.
12. A system for changing a codec of a VoIP telephone call, the system comprising:
a primary WAN;
a first LAN in communication with the primary WAN;
a second LAN in communication with the primary WAN;
the first and second LANs each individually having a router, a switch in communication with the router and an interface to a VoIP telephone in communication with the switch, where the primary WAN transmits voice packets of a VoIP telephone call between the VoIP telephones connected to the interfaces of the first and second LANs;
the VoIP telephones connected to the interfaces of the first and second LANs are configured to communicate to each other using voice packets, measure the quality of the VoIP telephone call and change a codec of the VoIP telephone call based on a measured quality of the VoIP telephone call;
a public switched telephone network; and
a gateway in communication with the router of the first LAN and the public switched telephone network, the gateway configured to provide access to the public switched telephone network from the VoIP telephone of the first LAN.