"Extension 77" is another feature commonly used in conjunction with the Black List feature. Transfer someone to "Extension 77"
Extension 77 is a fake call queue that assures the caller that they are very important to us and that they are the first one in line for a representative.. This, of course, is followed by "Rick Astley's Never Wanna Give you Up".
To listen to what your caller hears you can dial "77" on your Cool Telecom phone.