The Cisco ATA 191 Analog Telephone Adapter is a single-port device designed to provide voice and fax connectivity for businesses. It supports the Session Initiation Protocol (SIP) and is ideal for connecting legacy analog devices like phones, faxes, and modems to an IP-based network.
This ATA offers a simple and cost-effective way to transition to a Voice over IP (VoIP) infrastructure without replacing existing analog equipment. It provides a secure and reliable connection for voice communications.