The Cisco ATA191-K9 is an Analog Telephone Adapter (ATA) designed to connect traditional analog devices—like phones, fax machines, or paging systems—to modern IP-based networks. It’s a compact, cost-effective solution for businesses transitioning to VoIP while preserving legacy equipment.

Product Overview

• Model: Cisco ATA 191 (ATA191-K9)
• Function: Converts analog voice signals to digital for IP networks
• Ports:
  • 2 x RJ-11 FXS ports (for analog devices)
  • 1 x RJ-45 Ethernet port (10/100 Mbps)
• Protocol Support: SIP (Session Initiation Protocol)
• Call Control Compatibility:
  • Cisco Unified Communications Manager (CUCM)
  • Cisco Unified Communications Manager Express (CME)
  • Cisco Webex Calling