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US 8,509,114 B1Granted
Circuit emulation service over IP with dynamic bandwidth allocation
AssigneeAvaya Inc.
InventorRichard Szajdecki
Life of this patent
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Abstract
Method and apparatus provide in-band dynamic bandwidth management in a circuit-switched emulation service over Internet Protocol.
Claims18
An apparatus for circuit-switching emulation over Internet Protocol (IP) providing in-band dynamic bandwidth-management, comprising:
- a call controller establishing a circuit emulation service over IP (CESoIP) connection between a first transmission-control system and a second transmission-control system;
- the call controller for handling a transmission and for allocating a first port of a first transmission-control system for at least one active emulated circuit-switched channel;
- the call controller further operable for providing information to create a channel-allocation block that identifies, by an IP address, the at least one active emulated circuit-switched channel and a destination port allocated for the at least one active emulated circuit-switched channel on the first transmission-control system;
- wherein the first transmission-control system is operable to encapsulate the channel-allocation block into a header of a Real-time Transfer Protocol (RTP) packet;
- and
- wherein the first transmission-control system is further operable to send the RTP packet, which includes the channel-allocation block and the transmission, to a second transmission-control system while the at least one active emulated circuit-switched channel remains active.
3 more elements
A circuit-switching emulation service over Internet Protocol (IP) providing dynamic bandwidth allocation, comprising the steps of:
- a first transmission-control system originating transmission data for at least one active emulated circuit-switched channel through a circuit-emulated service over IP (CESoIP) connection;
- a call controller providing channel-allocation data for mapping said at least one active emulated circuit-switched channel to a destination port at a second transmission-control system, wherein the mapping includes an IP address and static UDP port information;
- said transmission-control system periodically sending in-band said channel-allocation mapping data with said transmission data, while said at least one active emulated circuit-switched channel remains active, wherein said channel-allocation data is encapsulated in a Real-time Transfer Protocol RTP packet;
- and
- said first transmission-control system extracting an active emulated circuit-switched channel and transmitting it as a VoIP channel.
2 more elements
An apparatus for circuit-switching emulation service over Internet Protocol (IP) providing dynamic bandwidth allocation, comprising:
- a first transmission-control system operable for originating transmission data for at least one active emulated circuit-switched channel over a circuit-emulated service over IP (CESoIP) pipe;
- said first transmission-control system further operable for encapsulating channel-allocation mapping data for mapping said at least one active emulated circuit-switched channel to a destination port at a second transmission-control system, wherein the channel-allocation mapping data includes an IP address and a static UDP port information, and wherein said channel-allocation mapping data is encapsulated in a Real-time Transfer Protocol (RTP) packet;
- said transmission-control system further operable for periodically sending in-band said channel-allocation mapping data with said transmission data, while said at least one active emulated circuit-switched channel remains active;
- and
- said first transmission-control system further operable for extracting an active emulated circuit-switched channel and transmitting it as a Voice over Internet Protocol (VoIP) channel.
2 more elements
Dependencies are inferred from the claim text.