Cisco ATA 191 Analog Telephone Adapter (ATA191-K9)

Convert your analog phones, fax machines, and paging systems to VoIP with the Cisco ATA 191 — a compact, wall-mountable 2-port adapter trusted by enterprises worldwide. Save up to 70% over new with Reef Telecom's certified refurbished units, backed by our industry-leading 10-year warranty.

Key Features & Specifications

• 2 x RJ-11 FXS Ports: Connect two analog phones, fax machines, or paging devices with independent phone numbers
• 1 x RJ-45 10/100 Mbps Ethernet Port: Fast Ethernet connectivity for reliable network integration
• SIP Protocol Support: Two independent SIP registrations — compatible with Cisco Unified Communications Manager (CUCM 8.5+, CME)
• Enterprise-Grade Security: SRTP encrypted voice, TLS signaling, HTTPS, and secure boot
• Fax over IP: T.38 fax relay and G.711 passthrough for reliable fax transmission
• Voice Codecs: G.711a/u, G.729AB, G.726 for clear, bandwidth-efficient calls
• Advanced Call Features: Caller ID, call waiting, call hold, call transfer, call forwarding, 3-way conferencing
• Wall Mountable & Compact: 3.9 x 3.9 x 1.1 in — fits anywhere, desktop or wall mount
• Easy Management: Web-based configuration interface, central provisioning via CUCM, PRT button for troubleshooting

Why Buy from Reef Telecom?

• 10-Year Warranty on all refurbished equipment
• Free Shipping on orders over $300
• Professionally tested and restored to full working condition
• Trusted by IT teams across North America

Ideal Use Cases

The Cisco ATA 191 is the preferred solution for enterprise networks, small offices, branch offices, and hospitality environments migrating analog devices to IP telephony. Connect legacy analog phones, fax machines, overhead paging systems, and modems to your VoIP infrastructure without costly full-system replacements.

Free ground shipping on orders over $300. Same-day shipping on orders placed before 4PM EST.

All products include our industry-leading 10 Year Warranty backed by Reef Telecom.