Yes you can. When you request a phone service from us we will ask if you wish to retain your number. If you do we will need to request that your number is transferred across to our network (much the same way as transferring a mobile phone number) and this process can take up to 4 weeks.
Furthermore we can provide a small adaptor to allow your existing analogue phone to be connected to our internet phone service.
It is all very simple and very easy.