The suggested cost per unbundled local loop line has been set at £81.85, which is more than the £80 BT has charged since 1 August when it cut prices from £105.09. Ofcom will consult on the proposals and deliver a final verdict on 10 October.
BT stated that the proposals are already factored into its £80 rental price which will not change as a result.
In a separate announcement the UK comms watchdog said that it would be freeing BT from restrictions so that it can offer special deals to its larger business customers.
Under the terms of the agreement customers paying over £1m per year will be free to negotiate their own costs with BT rather than all companies paying the same rate.
"Ofcom seeks to ensure that BT's competitors are able to operate on equal terms with BT," said Ofcom in a statement.
"Therefore, the consultation document also proposes that before BT can introduce bespoke pricing, competitors must be able to replicate BT's services using Wholesale Line Rental and Carrier Pre-Selection products.
"In a separate consultation, due to close on 30 September, Ofcom is assessing whether these products are now fit for purpose."
However, BT will not be allowed to offer prices at less than the cost of delivering the service, a move designed to stop it pricing its competition out of the market.
"This is a very welcome move by Ofcom and clearly a step in the right direction. The business retail markets are highly competitive and BT should be allowed to compete on the same basis as others," said BT.
"Ofcom has talked about introducing a deregulatory agenda where appropriate, and it is good to see some action in this area. BT will look at the detail contained in the paper and respond accordingly."
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