They’re generally called wall phones or wall‑mounted corded phones. You’ll also see a few common styles:

• Trimline/Slimline: A compact handset with the keypad on the handset; mounts to a wall or sits on a desk.
• Basic wall phones: Single‑line models designed to hang on a standard wall jack.
• Retro/vintage: Old‑school designs that bring a classic look, sometimes with a mechanical‑style ringer.
• Hotel/guest-room phones: Space‑saving, simple controls, often labeled keys for quick dialing.
• Big‑button/amplified: Larger keys, louder ringers, and volume controls that can be easier for seniors.

Most use a standard landline connection and focus on reliability, simple calling, and easy wall mounting.

Many corded wall phones are line‑powered, meaning they draw low voltage from the landline and can make and receive calls without being plugged into an outlet. However, certain features can change that:

• Displays and backlights: Caller display screens or clocks may require batteries.
• Caller ID service: The feature typically needs a subscribed service from your phone provider, and some phones use batteries to show the info.
• Amplified options: Enhanced volume or extra functions may use batteries.

Checking the product description and manual can clarify what’s line‑powered and what might need batteries. Actual operation can vary by phone model and your telephone service.

Mounting is usually straightforward, but it’s best to follow the included instructions for your specific model. A general approach looks like this:

1. Locate a wall jack: Most wall phones connect to a standard modular landline jack.
2. Attach the bracket: Use the phone’s wall‑mount bracket or baseplate; secure it to the wall as directed.
3. Connect the line cord: Plug the cord into the phone and the wall jack.
4. Position the cradle: Some models adjust the handset clip or cradle for vertical mounting.
5. Test the line: Make a quick test call to confirm dial tone and ringer.

Avoid drilling near hidden wiring, and consider a professional if you’re unsure about placement or hardware.

Many wall‑mounted landline phones include convenience features, but it varies by model. Common options include:

• Caller display: Shows incoming numbers when you have caller ID service from your provider.
• Last‑number redial: Quickly calls the most recent number.
• Speed dial or memory keys: Store frequent contacts for one‑touch calling.
• Volume controls: Adjust handset and/or ringer volume.
• Ring/in‑use indicators: Lights that help in noisy or low‑light areas.
• Mute, flash, hold: Helpful for navigating call waiting or pauses.

Review the feature list on the product page to match what you need—basic models focus on reliability, while others add displays and extra controls.

It can be a practical choice. Many wall phones are simple to use and offer senior‑friendly features. Look for:

• Large buttons: Easier dialing and readability.
• Extra‑loud ringer and volume controls: Helpful in bigger spaces or for those with hearing challenges.
• Hearing aid compatibility: Designed to reduce interference in compatible devices.
• Photo memory keys: Quick dialing using pictures can simplify calling.
• Wall/desk flexibility: Mounting the phone in a consistent spot makes it easy to find.

Line‑powered models may operate without AC power, which can be useful during outages depending on your service. Checking product details can help you pick the right mix of simplicity and accessibility.