METHOD FOR ESTABLISHING A CONNECTION BETWEEN AN INTERACTIVE NETWORK ADAPTER AND A NETWORK INTERFACE UNIT AS WELL AS NETWORK INTERFACE UNIT AND INTERACTIVE NETWORK ADAPTER

摘要

The invention deals with the establishment and modification of connections between network interface units (11) such as a cable modem and a head-end (12) at the cable operator's side. There is already specified a return channel in the DVB standard. In this specification there is a process specified named sign-on procedure, which is always performed after an upstream frequency/channel change. During this sign-on procedure on the terminal side the synchronisation in time and the power level adjustment are the main tasks to be performed. This individual adjustment can be quite long, depending on the configuration of the network and on the terminal location in the cable access network.