ATA191-K9 Cisco 2-Port Analog Telephone Adapter Review

ATA191-K9 Cisco 2-Port Analog Telephone Adapter

The Cisco ATA191-K9 2-Port Analog Telephone Adapter is a highly technical device that provides advanced functionality for integrating traditional analog telephones and fax machines into an IP network.

Technical Review

The Cisco ATA191-K9 2-Port Analog Telephone Adapter is an innovative communication device designed to facilitate the integration of traditional analog telephones and fax machines into an IP network

The telephone adapter is used majorly for enterprises, or small offices that are looking for solutions to upgrade their communication across the network. With its two FXS ports, enabling the users to connect up to two analog devices to the IP network. Further, these ports can be configured independently as two Session Initiation Protocol (SIP) registrations. Also, the device supports a wide range of voice codecs, including G.711, G.729a, G.729ab, and G.722, ensuring superior voice quality for all calls. The device is highly configurable and can be managed via a web-based interface, allowing for easy setup, monitoring, and troubleshooting.

The Cisco Telephone Adapter is highly configurable and easy to manage via a web-based interface, making it simple to set up, monitor, and troubleshoot remotely. It also supports fax pass-through and T.38 fax relay, ensuring reliable transmission of faxes.

As far as security is concerned, it supports Transport Layer Security (TLS), Secure Real-Time Transport Protocol (SRTP), and HTTPS, ensuring secure voice communications and device management.

ATA191-K9 Cisco 2-Port Analog Telephone Adapter (Refurbished)

ATA191-K9 Technical Specifications:

General Brand Cisco
Product Type VoIP Gateway
Part Number ATA191-K9
Interfaces/Ports PoE (RJ-45) Port No
Management Port No
Number of Network (RJ-45) Ports 1
Number of FXS (RJ-11) Ports 2
I/O Expansions SIM Card Supported No
Network & Communication Ethernet Technology Fast Ethernet
Network Standard 10/100Base-T
Wireless Specifications Wireless LAN No
Power Description Redundant Power Supply Supported No
Physical Characteristics Form Factor Wall Mountable
Height 3.9″
Width 3.9″
Depth 1″
Weight (Approximate) 4.70 oz

Key Features:

  • It features advanced security measures, including TLS, SRTP, and HTTPS.
  • The telephone adapter comes with Power over Ethernet (PoE) or an optional power supply for flexible power options.
  • It has two FXS ports for connecting analog telephones and fax machines to an IP network.
  • Compact, lightweight design for easy installation and movement.

About Cisco

Cisco is a multinational technology company that specializes in networking hardware, software, and telecommunications equipment. The company was founded in 1984 and is headquartered in San Jose, California. It provides a wide range of products and services, including routers, switches, wireless access points, security devices, telepresence systems, and unified communications solutions. The company also offers a range of software solutions, including network management software, collaboration tools, and cybersecurity solutions.

Talk to Hardware Experts at

Enhance communication across the network with the latest communication devices & networking devices available in a wide variety at  You can also order these networking devices in bulk, or for assistance; you can contact us through live chat or at (800) 821-3354.

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