Ready to use with a modular jack on each end This cord fits standard phone jacks and is ready to use out of the packaging High quality cord replace your old worn-out or damaged cord with a high-quality upgrade that features a durable jacket that protects against wear and tear Compatibility for home or Office use with all brands of telephones modems fax machines and other devices that connect to standard phone jacks 15 Ft Cord length Extends reach to in-wall landline phone jacks or between equipment U.S.-BASED TECHNICAL SUPPORT Backed by a limited-lifetime replacement pledge and free U.S.-based technical support that is available Monday Friday, 7AM-8PM, Central Time to assist with any questions or issues.