Please can someone tell me how to register the ntl d5100 handset with the base unit. I've got one that's been working fine, but the batteries were removed for a while and now it seems to be unregistered. I've lost the original manual, sent to homephonesonline for a replacement and the bits they've sent don't include the bit on registering the handset. Please tell me the procedure and the default PIN code.
Thanks in anticipation