The AT&T Trimline 213-11 is a corded landline phone in Black built for straightforward, reliable everyday calling. It runs entirely on line power — no AC adapter, no batteries, no outlet required — which means it stays connected even during power outages when cordless phones and smartphones go dark. Extra-large buttons with high-contrast text and a fully lighted keypad make dialing clear and easy in any lighting. The visual ringer flashes to alert you to incoming calls even when the ringer volume is turned down or off. Receiver and ringer volume are independently adjustable, and a mute button gives you full control during calls. Store up to 10 frequently dialed numbers and reach any of them with a single key press. The Trimline mounts to any standard wall bracket — keeping your counter clear and the phone accessible from anywhere in the room. No AC power required — runs on line power, stays connected during outages Visual ringer — flashes to alert you to incoming calls when ringer is silent 10-number speed dial — one-touch dialing for frequently called numbers Wall mountable — fits any standard wall phone bracket Hearing aid compatible — HAC and T-coil rated .