Voice over internet protocol real time protocol routing
View Patent ↗A method for call signaling and media flow in a network including receiving call signaling information from an originating Voice over Internet Protocol (VoIP) endpoint relaying the call signaling information to a destination VoIP endpoint, directing the originating VoIP endpoint to use a RTP media proxy and receiving a stream of media to the RTP media proxy from the originating VoIP endpoint.
1. In a Voice over Internet Protocol (VOIP) network comprising a plurality of call signaling and media proxy servers and a plurality of telephony gateways, wherein each of the plurality of telephony gateways is communicatively connected to one or more telephony networks separate from the VOIP network, a method comprising:
in response to initiation of a VOIP call by an originating VOIP device,
(a) selecting a particular telephony gateway of the plurality of telephone gateways to handle transmission of the VOIP call to a separate telephony network;
(b) instructing a particular telephony gateway of the plurality of telephony gateways to send media packets associated with the VoIP call to a specific Internet Protocol (IP) address and port assigned to a particular call signaling and media proxy server of the plurality of call signaling and media proxy servers; and
(c) by the particular call signaling and media proxy server,
(1) receiving media packets from the particular telephony gateway, wherein the media packets are associated with the VOIP call;
(2) modifying IP address information contained in said media packets; and
(3) sending said modified media packets to the originating VOIP device.
2. A method as recited in claim 1 , wherein said modifying act (c)(2) is performed, at least in part, using a network address translation mechanism.
3. A method as recited in claim 1 , wherein the method further comprises:
(d) by the particular call signaling and media proxy server,
(1) receiving media packets from the originating VOIP device, wherein the media packets are associated with the VOIP call;
(2) modifying IP address information contained in said media packets; and
(3) sending said modified media packets to the particular telephony gateway.
4. A method as recited in claim 3 , wherein said modifying act (d)(2) is performed, at least in part, using a network address translation mechanism.
5. A method as recited in claim 1 , wherein the media packets comprise Real Time Protocol (RTP) packets.
6. A method as recited in claim 1 , wherein the separate telephony network comprises a public switched telephone network.
7. In a Voice over Internet Protocol (VOIP) network comprising a plurality of call signaling and media proxy servers and a plurality of telephony gateways, wherein each of the plurality of telephony gateways is communicatively connected to one or more telephony networks separate from the VOIP network, a method comprising:
in response to initiation of a VOIP call by an originating VOIP device,
(a) selecting a particular telephony gateway of the plurality of telephone gateways to handle transmission of the VOIP call to a separate telephony network;
(b) instructing the originating VOIP device to send media packets associated with a VoIP call to a specific Internet Protocol (IP) address and port assigned to a particular call signaling and media proxy server of the plurality of call signaling and media proxy servers; and
(c) by the particular call signaling and media proxy server,
(1) receiving media packets from the originating VOIP device, wherein the media packets are associated with the VOIP call;
(2) modifying IP address information contained in said media packets; and
(3) sending said modified media packets to the particular telephony gateway.
8. A method as recited in claim 7 , wherein said modifying act (c)(2) is performed, at least in part, using a network address translation mechanism.
9. A method as recited in claim 7 , wherein the method further comprises:
(d) by the particular call signaling and media proxy server,
(1) receiving media packets from the particular telephony gateway, wherein the media packets are associated with the VOIP call;
(2) modifying IP address information contained in said media packets; and
(3) sending said modified media packets to the originating VOIP device.
10. A method as recited in claim 9 , wherein said modifying act (d)(2) is performed, at least in part, using a network address translation mechanism.
11. A method as recited in claim 7 , wherein the media packets comprise Real Time Protocol (RTP) packets.
12. A method as recited in claim 7 , wherein the separate telephony network comprises a public switched telephone network.