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cisco ATA 191 Multiplatform Analog Telephone Adapter, 2-Port Handset-to-Ethernet Adapter, 1-Year Limited Hardware Warranty (ATA191-3PW-K9)The cisco Analog Telephone Adaptor (ATA) 191 Multiplatform Analog Telephone Adapter turns traditional telephone, fax machine, and overhead paging communications devices into IP phones and devices Ideal for custom..