The Cisco ATA 191 analog telephone adapter transforms traditional telephone, fax, and overhead paging devices into IP devices, allowing users to leverage IP telephony applications. This adapter is ideal for small offices and enterprise networks, facilitating a smooth transition to voice over IP (VoIP) technology. It features two standard FXS ports, which can be independently configured for Session Initiation Protocol (SIP) registrations. The ATA 191 not only protects existing investments in analog systems but also provides a reliable and cost-effective solution for modern communication needs. With a wall-mountable design and support for various network standards, it ensures seamless integration into any environment.