NTL has announced it has decided to suspend its domestic direct telephone service in Dublin.
The company said it had identified a safety issue associated with its domestic direct telephone equipment.
All 2,000 customers are being informed and NTL is recommending each customer contact an alternative telephone provider.
NTL says none of its other services are affected.
However, some customers have expressed their concerns about the equipment and the lack of information on the safety issue.
Customers said they were alarmed when they were contacted by NTL today and told to unplug the equipment immediately.
NTL said customers could use the equipment for emergency calls but has not clarified exactly what the safety issue is.
