BT 8500 Quad Cordless Phones with Nuisance Call Blocking The BT 8500 is the latest model in BT’s range of nuisance call blocking cordless phones, helping you to out an end to unwanted sales calls once & for all. The stylish handset boasts an impressively long battery life of up to 21 hours continuous product use, & more than 300 hours on standby. It comes complete with a built-in answer machine, & variety of practical DECT features for the home. User-friendly design From the large backlit colour display & illuminated keypad to the intuitive menu interface; the BT 8500 has been designed with the user in mind. An integrated loudspeaker on the can be activated during a call at the touch of a button so you can continue your conversations hands-free, & the volume can be easily adjusted to your preference. Large phonebook Organising & accessing your contacts is straightforward with a generous phonebook memory for up to 200 contacts. The 8500 is Caller ID enabled as well; so you will see the details of incoming callers if you subscribe to this service. Digital answer machine You can record up to 30 minutes of messages on the 8500, & either playback messages from the base using the handy controls or access your messages with the handset. There are a choice of pre-recorded greeting messages or you can create your own personalised message; & you can choose how many rings before you’d like the machine to pick up the call.