CIS-ATA191-3PW-K9 2-Port Analog Telephone Adapter for MPPThe Cisco ATA 191 Multiplatform Analog Telephone Adapter is a 2 port handset to Ethernet adapter that brings traditional analog devices into the IP world. Turns traditional telephone, fax, and overhead paging communications devices into IP devices for greater cost effectiveness. Customers can take advantage of IP telephony applications by connecting their analog devices to Cisco analog telephone adapters.