The CNMC has chosen to deregulate the wholesale market for access and call origination in fixed networks, affecting how alternative operators access Telefónica's fixed telephone network. Telefónica's market share has been decreasing due to the rise of fixed telephone lines with internet and the declining number of households opting for standalone fixed telephony.

Operators providing fixed telephony services through copper networks are increasingly turning to fiber networks or mobile access, leading to reduced barriers to entry in the wholesale market. The CNMC observed a competitive retail market for fixed telephony services, with Telefónica's market share dropping over the years. The regulatory framework ensures continued competitive development in the market.