The Cisco ATA 191 Analog Telephone Adapter (ATA) is the preferred solution connect to enterprise networks, small offices, or unified communications as a service (UCaaS) from the cloud. It has two standard FXS ports, which can be configured independently as two Session Initiation Protocol (SIP) registrations. With the ATA 191, you can protect and extend you existing investment in analog systems, as well as smooth your company's migration to pure voice over IP in an affordable and reliable way. This ATA device turns traditional telephone, fax, and overhead paging communications devices into IP devices for greater cost-effectiveness. Take advantage of IP telephony applications by connecting your analog devices to Cisco analog telephone adapters.
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