AT&T AWX20004 Accessory Cordless Handset for AWX22104 Cordless Phone System, Gold ECO mode manages power consumption so the system uses less energy and you get the best battery life. Silence the ringer on the handset and base for just a moment or for an extended period of time. This technology provides superior quality of voice and sound, high protection against wiretapping, and better range than 2.4GHz and 5.8GHz phone systems, while not interfering with wireless routers. Program up to 50 names and associated phone numbers in the handset. Quickly access the directory entries by scrolling alphabetically or entering the first letter of a name. 9 number speed dial Loudness of incoming voice can be adjusted for the best listening level from the speaker. Voicemail waiting indicator2