US 2006/0133386 A1 · Multiprotocol convergence switch (MPCS) and method for use thereof

Abstract

A switch enables a telephone to use one virtual circuit to connect through a packet switched network to any number of other telephones. The switch supports multiple network types, permitting, for example, the conversion of UDP and AAL5 data to AAL2 data. Multiple switches, each connected to several other switches by ATM virtual circuits, are used to form a telephone network. Each telephone connects to just one switch. When a telephone call is made, the call is sent to the associated switch, which then determines, based on destination, to where the call should be routed. The call is sent through the telephone network to the destination switch, which in turn sends the call down the one virtual circuit to the destination telephone. Header stripping using out-of-band signaling minimizes bandwidth wastage by not requiring the ingress and egress points of the packet-switched network to maintain a synchronized connection state that must be regularly validated and updated with state and error information.

Claims3

Dependent claims

A method of header stripping comprising:

receiving, on a first input UDP port, a packet comprising a header and data;
using a first multiprotocol convergence switch to find, in a first routing table, a first output UDP port associated with the first input UDP port;
using the first multiprotocol convergence switch to strip the header from the packet;
storing the header within a call setup message;
sending the call setup message to a second multiprotocol convergence switch;
saving a header in a second routing table associated with said second multiprotocol convergence switch, using the information in said call setup message;
using the first multiprotocol convergence switch to write the data to the first output UDP port;
receiving the data at the second multiprotocol convergence switch on a second input UDP port associated with the first output UDP port;
using the second multiprotocol convergence switch to retrieve the header from the second routing table;
using the second multiprotocol convergence switch to find, in the second routing table, a second output UDP port;
adding the header from the second routing table to the data to reconstitute the packet;
and
writing the packet to the second output UDP port.

10 more elements

Dependencies are inferred from the claim text.

Multiprotocol convergence switch (MPCS) and method for use thereof

Life of this patent

Multiprotocol convergence switch (MPCS) and method for use thereof

Life of this patent

Abstract

Claims3