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Market shares of the incumbent telecommunications actors 1998-2011
Market shares of the incumbent telecommunications actors 1998-2011 -
Telephone traffic in the fixed network (PSTN/ISDN) 1980-2011
Telephone traffic in the fixed network (PSTN/ISDN) 1980-2011 -
ISDN basic and primary lines 2002-2011
ISDN basic and primary lines 2002-2011
