Cisco ATA 191 2-Port Analog Telephone Adapter (ATA191-K9) | New
SKU: ATA191-K9-N
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Overview of Cisco ATA 191 2-Port Analog Telephone Adapter (ATA191-K9) | New
The Cisco ATA 191 2-Port Analog Telephone Adapter (ATA191-K9) is a compact VoIP bridge that links fax machines or analog phones to an IP network. It is intended for companies who wish to switch to contemporary SIP-based communications while maintaining traditional voice equipment. With its two separate FXS ports and 10/100 Ethernet interface, this Cisco ATA 191 analog telephone adapter enables each connected device to function with its own SIP registration. For small offices, branch locations and unified communications deployments that require consistent voice access with easy installation, it is a sensible option.
Key Features of Cisco ATA 191 2-Port Analog Telephone Adapter
• 2 x RJ-11 FXS ports for connecting analog phones or fax machines.
• 1 x RJ-45 10/100Base-T Ethernet port for IP network connectivity.
• Independent SIP registrations for each analog port.
• Voice codec support including G.711, G.729a, G.729ab and G.711u/G.711a.
• Fax support with T.38 for reliable fax over IP.
• Security protocols including TLS, SRTP, HTTPS and AES encryption.
• Management support through HTTP, HTTPS, TFTP and SSH.
• Compact wall-mountable form factor for flexible placement.
Benefits of Cisco ATA 191 2-Port Analog Telephone Adapter
🗹 Extend the life of analog phones and fax machines without replacing your existing endpoints.
🗹 Lower migration costs by using a single adapter to bridge analog devices into VoIP.
🗹 Improve deployment flexibility with two FXS ports that can be configured separately.
🗹 Maintain clear voice quality with supported codecs and call-handling features like echo cancellation and jitter buffering.
🗹 Protect business communications with encrypted signaling and secure management options.
🗹 Fit easily into small office or branch environments due to the adapter’s compact design.
Specifications
Specifications for Cisco ATA 191 2-Port Analog Telephone Adapter (ATA191-K9) | New
| Manufacturer | Cisco |
| Manufacturer Part Number | ATA191-K9 |
| Product Name | Cisco ATA 191 2-Port Analog Telephone Adapter |
| Product Type | Analog Telephone Adapter / VoIP gateway |
| Color | Black |
| Primary Function | Connects analog telephones and fax machines to an IP network |
| Voice Ports | 2 x RJ-11 FXS ports |
| Network Port | 1 x RJ-45 Ethernet port |
| Ethernet Standard | 10/100Base-T Fast Ethernet |
| SIP Support | Yes, supports two independent SIP registrations |
| Protocol Support | SIP, RTP, RTCP, SRTP, HTTPS, TLS, TFTP, SSH |
| Voice Codecs | G.711a, G.711u, G.729a, G.729ab, G.722 |
| Fax Support | T.38 fax relay and fax pass-through |
| Call Features | Call waiting, caller ID, call transfer, conferencing, hold, mute |
| Power | DC 5V power input |
| Power Delivery | Optional external power supply or PoE support depending on deployment |
| Management Interface | Web-based administration |
| Status Indicators | LED status lights |
| Form Factor | Desktop, wall-mountable |
| Dimensions | 3.9 in x 3.9 in x 1.0 in |
| Weight | Approx. 4.7 oz |
| Compatibility | Cisco Unified Communications and supported SIP environments |
| Typical Use Case | Legacy phone and fax integration in VoIP deployments |
| Included Items | ATA unit and installation components |
User Guides
Frequently Asked Questions
Cisco ATA 191 2-Port Analog Telephone Adapter
Frequently Asked Questions (FAQ's)
How many analog devices can the Cisco ATA 191 support?
The ATA 191 features two FXS ports, allowing you to connect up to two compatible analog devices such as telephones or fax machines.
Can I connect a fax machine to the Cisco ATA 191?
Yes. The ATA 191 supports compatible analog fax machines when used with supported VoIP environments.
Does the ATA 191 support SIP?
Yes. It uses the Session Initiation Protocol (SIP) for compatibility with Cisco and standards-based IP telephony platforms.
Is the Cisco ATA 191 compatible with Cisco Unified Communications Manager?
Yes. It is designed to integrate with Cisco Unified Communications Manager (CUCM) and other compatible Cisco voice solutions.
Can I continue using my existing analog phones?
Yes. The ATA 191 allows legacy analog telephones to operate on an IP-based VoIP network.
Does the adapter support HD voice quality?
Yes. It supports wideband audio codecs to provide high-definition voice quality with compatible systems.
Is the ATA 191 suitable for small businesses?
Yes. It is ideal for small businesses, branch offices, home offices, and organizations migrating to VoIP.
Is installation easy?
Yes. The ATA 191 features a compact design, plug-and-play deployment, and straightforward configuration.
Does the ATA 191 require special software?
No. Configuration is handled through supported Cisco or SIP-based management platforms.
Can I use the ATA 191 with hosted VoIP services?
Yes. It is compatible with many SIP-based hosted VoIP providers, subject to provider support and configuration requirements.
Does the ATA 191 support IPv6?
Yes. It supports both IPv4 and IPv6 networking environments.
Is the Cisco ATA 191 secure?
Yes. It incorporates enterprise-grade security features to help protect voice communications and device management.
Can it be used in remote offices?
Yes. Its compact size and reliable performance make it well-suited for branch offices and remote work locations.
Is the ATA 191 suitable for hospitality and healthcare environments?
Yes. It is commonly deployed in hotels, hospitals, clinics, schools, and other organizations that continue to use analog communication devices.
Can the ATA 191 connect analog conference phones?
Yes. Compatible analog conference phones can be connected using the FXS ports.
Can I use the ATA 191 with paging systems?
Yes. Many compatible analog paging systems can be integrated into a SIP-based communications environment using the ATA 191.
Does the adapter require frequent maintenance?
No. Once installed and configured, the ATA 191 requires very little routine maintenance.
Is the ATA 191 suitable for organizations migrating to VoIP?
Yes. It provides a simple and cost-effective way to transition from traditional analog telephony to IP communications while preserving existing equipment.
Is the ATA191-K9 a genuine Cisco product?
Yes. The ATA191-K9 is an original Cisco Analog Telephone Adapter designed for enterprise and business communications.
Why choose the Cisco ATA 191 2-Port Analog Telephone Adapter (ATA191-K9)?
The Cisco ATA 191 offers dual FXS ports, SIP-based VoIP connectivity, HD voice support, enterprise-grade security, seamless integration with Cisco Unified Communications, and reliable performance, making it an ideal solution for connecting legacy analog devices to modern IP communication networks.
Ratings & Reviews
1 review
works great!
by Julia B.
If you use it for a third-party VoIP service, you'll need to determine the configuration on your own and once you've successfully configured it, it works great!