People are being urged to do research about how other home devices could be affected when signing up for fibre broadband.
Issues people hadn't envisaged when signing up include older medical and security alarms not being compatible with fibre, and old phone jacks becoming redundant in homes which use multiple phones.
TrueNet director John Butt told the Chronicle people need to do some research when connecting to fibre and also be prepared to spend a bit more money on upgrades to outdated devices.
"When you think about it, you spend over $1000 a year on internet," he said. "Think of it as an annual fee and you'll realise it's not a simple thing you're signing up to. If you went and bought an item that was $1000, you'd probably do some research. I think that's probably the main message."
Whanganui resident Rod Davenport contacted the Chronicle to say it was news to him his bedroom telephone would no longer work through the old phone jack once he connected to fibre.