BT is partly responsible for the fact that Voice over Internet Protocol (VoIP) has not been adopted as a mainstream communication method in the UK.
That is according to Analysys Mason, which suggested that this is because of the broadband provider's dedication to its 21st century network (21CN).
However, this could be something that is about to change if BT's plans begin to include a bigger emphasis on fibre optics, the organisation said.
Rupert Wood, Principal Analyst at the telecoms adviser, noted that it is "likely" that the provider will start to make alterations, which could encourage other operators to start considering VoIP.
Mr Wood suggested that VoIP uptake has also been slow in the UK because fixed and mobile telecoms are inexpensive and of a high quality.
Nonetheless, he pointed out, if BT reconsiders 21CN then services could "move over to Voice over IP in the long run".
However, he went on to say that this could be something that "takes many years to happen".