Two of the UK's leading broadband providers have passed a petition on the issue of mobile termination rates onto Ofcom.
BT and 3 have revealed that there are 114,000 signatures on the document, which is calling for the authorities to lower termination rates that are charged when home phone users call mobile handsets.
Over 60 organisations from a range of sectors, including the Post Office and the Federation of Small Businesses, are also supporting the campaign.
John Petter, Managing Director of BT Retail's consumer division, said any cut of less than a penny would mean "continued unfairness and high prices for UK consumers and businesses".
"This petition is only the first stage in an ongoing campaign to show how mobile termination rates stifle competition and increase the cost of calling mobiles - our goal remains for them to be set according to what they actually cost," he added.
BT and 3 originally launched their Terminate the Rate campaign in May this year.