Patent ID: 6366580
Filing Date: 2002-04-02
Classification: H04L

Abstract:
A method of changing the bandwidth of telephone call data on an asynchronous transfer mode (ATM) network that is initially transmitted via a first switched virtual circuit (SVC) between a first ATM switch and a second ATM switch at a first bandwidth, said method comprising:(a) sending a set-up message for a second SVC from the first ATM switch to the second ATM switch; (b) sending a switch-over request message from the first ATM switch to the second ATM switch via the second SVC; (c) sending a switch-over acknowledge message from the second ATM switch to the first ATM switch via the second SVC; (d) sending a switch-over begin message from the first ATM switch to the second ATM switch via the second SVC; (e) sending a switch-over confirm message from the second ATM switch to the first ATM switch via the second SVC; and (f) transmitting the telephone call data via the second SVC at a second bandwidth that differs from the first bandwidth.