NUISANCE CALL BLOCK WITH CALL BLOCK KEY Nuisance Call Block allows you to block calls from unwanted numbers, such as telemarketers and free phone number prefixes. The current number can be easily registered to the call block list by pressing the Call Block key while the phone is ringing or during a call. The KX-TGB61 series can block as many as 50 registered numbers. This feature helps to keep your fun times from being interrupted. ENHANCED RECEIVER VOLUME Clear and audible sound even when there’s background noise. The maximum receiver volume is around twice as loud as the standard Panasonic DECT telephones (KX-TG6811).
