The bt 7600 quad dect cordless phone ndash a user friendly and stylish asset with nuisance call blocking put an end to those pesky unwanted sales calls with the bt 7600 and take back control over the calls you receive with the nuisance call blocking feature you can put an end to being disturbed by withheld and international numbers which account for a large proportion of unwanted sales calls and with a large easy to read amber backlit display excellent sound quality and int