Patent ID: 7990862

Claim:
A switching system comprising: an ATM switch; a timer to: monitor, an input of the ATM switch, to determine whether a request for connection, from a subscriber terminal unit, has been received during a given time period, and send a startup reserved connection signal when the request for connection is not received within the given time period; and a call processing section to: receive the startup reserved connection signal, determine, from a memory of the system, a first call history element, the first call history element being used to send a previous request for connection to the ATM switch, where the previous request for connection is associated with the subscriber terminal unit and is sent during another given time period occurring prior to the given time period, send another request for connection to the ATM switch using the first call history element, receive, in response to sending the other request for connection, a response for connection from the ATM switch, where the response for connection includes information for transmitting data from the subscriber terminal unit via a switching network, and store, in the memory, information included in the response for connection, where the information is used to establish a connection in response to a future request for connection associated with the subscriber terminal unit; determine, in response to storing the information included in the response for connection, whether the startup reserved connection signal is still present, and determine, when the startup reserved connection signal is still present, a second call history element used to send a different request for connection to the ATM switch, where the different request for connection is associated with another subscriber terminal.