Cisco ATA 191 2-Port Analog Telephone Adapter for VoIP IntegrationCisco ATA 191 2 Port Analog Telephone Adapter for VoIP Integration The Cisco ATA 191 Multiplatform Analog Telephone Adapter is a 2 port handset to Ethernet adapter that brings traditional analog devices into the IP world. This adapter turns traditional telephone, fax, and overhead paging communications devices into IP devices for greater cost effectiveness. Ideal for enterprise networks, small offices, and unified communications as a service from the