1. IDEAL SOLUTION: Our phone expansion link is a simple, affordable accessory designed to let you move your router around the home without losing signal or download speed. Compatible with routers, phones, and fax machines. 2. SAFETY AND SECURITY: This cable uses oxygen copper conductors, providing conductivity. The wires run cooler than many alternatives and are more resistant to short circuits. 3. DURABLE: This telephone expansion link features a strong PVC jacket that is soft and flexible, helping prevent landline cables from snapping or breaking. 4. CONNECTION: The cable uses a 4pin straightthrough configuration, ensuring fast and smooth association that permits you to enjoy online work or play without interruptions. Use scenarios: Relocate a router or modem to a central location in the home to maintain strong signal and avoid speed loss. Extend connectivity for phones and fax machines in a home office or small business environment. Improve stability for online gaming or video calls in rooms distant from the router.