ATA191-K9 Cisco Analog Telephone Adapter 191

Cisco ATA191-K9 - Analog Telephone Adapter

The Cisco ATA191-K9 is a compact, cost-effective analog telephone adapter that bridges legacy analog devices with IP telephony systems. Supporting two independent voice ports, it allows businesses to extend the life of analog phones and fax machines while taking advantage of Cisco Unified Communications solutions.

🔧 Key Specifications

• Voice Ports: 2x RJ11 FXS ports (each supports an independent phone number)
• Network Interface: 1x 10/100Base-T Ethernet RJ45 port
• Protocols Supported: SIP (Session Initiation Protocol) for interoperability with Cisco Unified Communications Manager and third-party call control
• Audio Codecs: G.711 (A-law, µ-law), G.729, G.729a, G.729ab, G.722 (wideband)
• Fax Support: T.38 fax relay and pass-through
• Security: TLS, SRTP for secure signaling and media encryption
• Power: External 100-240V AC adapter (included)
• Dimensions: 1.3 x 4.1 x 4.1 in. (3.3 x 10.5 x 10.5 cm)
• Weight: ~0.5 lb (0.23 kg)
• Operating Temperature: 0° to 40°C (32° to 104°F)

🧩 Ideal Use Cases

• Small businesses migrating from analog to VoIP telephony
• Enterprises integrating fax machines or paging systems into IP networks
• Service providers offering analog line support in hosted VoIP deployments
• Cost-sensitive environments needing reliable analog/IP bridging

⚙️ Licensing & Expansion

• No additional licensing required; integrates with Cisco Unified Communications Manager or third-party SIP call control.
• Supports remote provisioning and zero-touch deployment for large-scale rollouts.