Patent ID: 6128336
Filing Date: 2000-10-03
Classification: H04L,H04M,H04W

Abstract:
A communications network fixed-end for establishing a synchronized data communications channel over a radio link in which signals are encoded according to a data signalling format transporting signalling data and control information between a mobile communication apparatus and a remote modem and computer coupled to said communications network fixed-end over an audio line, said cellular fixed end comprising:a base station for receiving and broadcasting modem handshaking commands encoded in the data signalling format, said base station converting the modem handshaking commands to a second data format;a mobile switching center coupling said base station for interfacing the base station to the audio line; anda synchronizing modem between said mobile switching center and the audio line, said synchronizing modem downloading modem handshaking commands in the second data format and establishing a data connection with the remote modem by exchanging handshaking commands to reach a negotiated state, said synchronizing modem further uploading a connection result code to said mobile switching center when a data connection is established, the connection result code reflecting the negotiated state.