Abstract: A telecommunication network using the W-CDMA protocol comprising a variety of base stations (BS) communicating with a central Radio Network Controller (RNC) by an asynchronous transfer mode (ATM) based data connection via an IUB interface, whereby at least one of the base stations (BS) is comprises a variety of radio sectors (1, 2, 3, . . . n) with physically distributed AAL-2 based termination points (TP), each termination point having an AAL-2 over ATM structure where different call ID's are mapped into respective ATM virtual connections (ATM/VC) under the control of a control unit timer (CU-timer) having a determined delay time, and all AAL-2 cell streams being sent parallel to each other to an ATM switching unit via a UTOPIA interface.

Abstract: The invention relates to a method and an ATM Network Element (ATM NE-1) for automatic protection switching of a Transmission Convergence Sublayer SubNetwork Connection TCS SNC.

Abstract: A broadband line interface circuit has a transmission module and a reception module. The transmission module has a parallel-to-serial converter 11 that receives data from a multiplexer 14 that multiplexes data from one or more input data tributaries. The transmission module also has a randomizer 15, a transmission clock generator 12, and a parity generator 13. The receiver module has a serial-to-parallel converter 33 that receives data under control of a reception clock generator 34. The serial-to-parallel converter sends parallel data to a demultiplexer 36 and to a parity verification block 32. A derandomizer 37 is connected with the demultiplexer 36, which demultiplexes the data onto one or more output data tributaries.