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The Cisco ATA 191 Analog Telephone Adapter (ATA191-K9) is a 2-port VoIP adapter designed to bridge the gap between traditional analog devices and modern IP-based telephony networks. It enables cost-effective migration to voice over IP (VoIP) by allowing businesses to continue using existing analog phones, fax machines, and overhead paging systems. The ATA191-K9 is a reliable, economical choice for businesses transitioning to the cloud or upgrading to IP telephony without replacing their current analog investments.
Product Features and Benefits:
Two Independent Ports: Features two FXS ports, which can be configured independently for two separate Session Initiation Protocol (SIP) registrations.
Broad Compatibility: Designed for use with Cisco Unified Communications Manager (CUCM), Webex Calling, and various third-party call control systems, supporting SIP-based services.
High-Quality Voice & Security: Delivers clear, natural-sounding voice quality through advanced preprocessing, echo cancellation, and voice activity detection (VAD). It provides secure, encrypted communications using TLS (Transport Layer Security) and SRTP (Secure Real-Time Transport Protocol).
Fax and Modem Support: Reliably supports T.38 and pass-through fax, ensuring that legacy fax machines work over IP networks.
Easy Provisioning & Management: Supports zero-touch provisioning via TR-069 and XML configuration files, making it ideal for small offices and distributed enterprise environments. It also includes a dedicated Problem Reporting (PRT) button for simplified troubleshooting.
IPv6 Support: Enables an IPv4/IPv6 dual stack to facilitate migration to IPv6 networks.
Technical Specifications:
Interfaces: 2 x RJ-11 FXS ports, 1 x 10/100 Mbps RJ-45 Ethernet port.
VoIP Protocols: SIP (RFC 3261).
Voice Codecs: G.711 (a-law/μ-law), G.729a, G.729ab, G.726, T.38.
Dimensions: 3.9 in x 3.9 in x 1.1 in.
