Originally Posted by 83ray1:
“Thats ridiculas and theres no need for it.
So if someone on Virgin calls someone on BT who has caller display it won't work?
They need their heads banged together. Should be a universal standard. I might report this to ofcom.”
No, the caller display will work BT to cable and cable to BT.
What it means is, the vast majority of devices (phones) were made for 'BT' version of caller display and not cables version of caller display. There are more and more dual compatible caller display versions being made.
So if you buy a phone that only has 'BT' version of caller display then it won't work for caller display in the cable areas that use the 'cable' version of caller display.
Same that if you bought a phone with 'cable' only version caller it wouldn't work on BT lines for caller display - though no cable only caller display phones get sold in the UK.
Some cable areas do use the 'BT' version, most don't. Some areas of cable don't even have caller display available.