Pure Telecom has agreed a multi-million euro contract with BT Ireland, which will see it offer broadband and phone services to 1.8 million potential customers via BT Ireland's infrastructure network.
BT Ireland's 4,300km multi-gigabit fibre network extends Pure Telecom's countrywide reach.
The new deal will allow Pure to offer broadband to a greater number of hard-to-reach rural premises.
Research carried out by Pure Telecom earlier this year found that 59% of Irish people use three or more internet-connected devices on a daily basis.
It said that the deal with BT Ireland allows it to offer internet speeds of up to 1,000Mbps in eligible rural and urban areas.
Paul Connell, CEO of Pure Telecom, said the agreement is of strategic importance to both Pure Telecom and BT Ireland and could grow to up to €20m over the coming years.
"BT Ireland has an extensive network across Ireland and we are delighted to be partnering with them. BT Ireland is a trusted provider in the Irish telecommunications sector and will help us to broaden our reach across the country and support an increasingly technology-driven population," he added.