VTech tz2526 2.4 GHz Cordless Phone with TeleZapper and Caller ID

Product Description
Vtech TZ2526 2.4GHz Cordless TeleZapper Phone you can plug into any phone or phone jack to “zap” computer-generated telemarketing calls. Emits a special tone that fools the computer into thinking your number is disconnected. Covers all phones and answering machines connected to that line. Doesn’t interfere with manually dialed calls, answering machines, voice mail, Call Waiting, or Caller ID. No additional charges with TeleZapper.Amazon.com Product Description
If you’re continually bothered by unwanted calls from telemarketers, consider VTech’s TZ2526, which adds TeleZapping technology to make your dinner hour far more peaceful. It actually disconnects most computer-generated calls and helps reduce the number of calls over time.

Given that more than 90 percent of telemarketing calls are placed with computer assistance, when either you or your answering machine answers the phone, the phone’s built-in TeleZapper emits a special tone that tells the computer your number has been permanently disconnected. Telemarketing companies that use automated dialing systems typically remove disconnected numbers from their calling lists, and as your phone number is eliminated from more and more telemarketing lists, you’ll notice fewer calls. Of course, not all telemarketers use predictive dialing systems, and those that do will undoubtedly continue their work to evade the TeleZapper, but it can be a partial solution.

The TZ2526’s 2.4 GHz signal supplies a clean, consistent connection among 30 analog channels. With subscription to local service, caller ID can track the names and numbers of up to 99 calls. Return those calls at the touch of button, or store the number in your 50-station permanent phone book directory. VTech provides a one-year warranty.
VTech tz2526 2.4 GHz Cordless Phone with TeleZapper and Caller ID