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Originally Posted by Scooby
I don't think thats true Neil, I have from experience seen phones that have a Caller Disp facility on them not work on the ntl network. Ntl do have a list of compatible phones which is tiny however more phones work on the network than that (if that makes sense?!?) but my no means do all phones work!
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Agreed, when I rang NTL to have CallerID enabled I was told that not all CallerID phones would work on the NTL network and if it did not work with my phone then I should ring back to cancel (luckily, it worked fine with my Binatone MD1000
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AFAICT, there are two "versions" of CallerID (probably American and European) that are not completely compatible with each other. BT uses one of these versions across the whole of its UK network. All CallerID phones sold in the UK are compatible with this version some are also compatible with the other version. NTL has a mixture of telephone exchanges acquired from different companies over the years, some support one version of CallerID, some the other version and some do not support CallerID at all.