Access method in communications systems with different service feature classes, and a corresponding communications system

Abstract

Subscriber terminals of different service feature classes are accessed on access channels of a communication system with different service feature classes. At least two access channels (RACH 1 , RACH 2 ) of a different service feature class are provided in the communication system.

1 . A subscriber terminal, comprising: 
 a first device using a first access channel, to request a communications connection associated with a first service classes, the first service class communicating with a communications system on bidirectional transmission channels; and    a second device using a second access channel, to request a communications connection associated with a second service class, the second service class communicating with the communications system on unidirectional transmission channels.