Patent ID: 6631275
Filing Date: 2003-10-07
Classification: H04W

Abstract:
A method of accelerating a call establishment procedure in a radio communication system comprising a telephone network comprising an exchange and at least one base station, a terminal with a transceiver and a subscriber device connected to the terminal,whereupon having received a message from the terminal with the request for a radio channel, the network performs the first part of the call establishment procedure, and having received the called subscriber's telephone number sent from the terminal, the network performs the latter part of the call establishment procedure, comprising the steps of: receiving and temporarily storing digits of the called subscriber's telephone number in a buffer of the terminal, sending to the network a message which includes a pseudonumber informing the network that the called subscriber's telephone number will be sent after the message, the pseudonumber is analyzed by a visitor location register, changing the state of an exchange in response to the pseudonumber, converting the stored digits into a format suitable for transmission on an assigned signaling channel, sending the converted digits to the network before all of the digits have been dialed, and receiving the called subscriber's telephone number at the network and proceeding through the latter part of the call establishment procedure to its termination.