ATA 191 -2 Port Analog Telephone Adapter

Part Number: ATA191-3PW-K9

2-port analog telephone adapter with router for multiplatform, 2x RJ-11 FXS ports, 1x 10/100 Mbps RJ-45 Ethernet port, 100×100×28mm, 132.1g


Voice quality Offers clear, natural-sounding voice quality via advanced pre-processing, high-performance echo cancellation, Voice Activity Detection (VAD), and Comfort Noise Generation (CNG)
Central provisioning and configuration Eases deployment via a Cisco Unified Communications Manager central interface
Security Provides a complete security solution for both media and signalling
Problem reporting (PRT) Improves serviceability with a dedicated PRT button for problem reporting and log collection
IPv6 Enables an IPv4/IPv6 dual stack to help migration to IPv6



The Cisco ATA 191 Multiplatform Analog Telephone Adapter turns traditional telephone, fax, and overhead paging communications devices into IP devices for greater cost-effectiveness. Customers can take advantage of IP telephony applications by connecting their analog devices to Cisco analog telephone adapters.

The ATA 191 is the preferred solution to address the needs of customers who connect to enterprise networks, small offices, or unified communications as a service from the cloud. It has two standard FXS ports, which can be configured independently as two Session Initiation Protocol (SIP) registrations. With the ATA 191, customers can protect and extend their existing investment in analog systems, as well as smooth their migration to pure voice over IP in a more affordable and reliable way.

The ATA 191 is designed to work with third-party call control systems and does not work with Cisco call control systems.


VoIP protocols       SIP
Supported network protocols       TCP, UDP, RTP, HTTP, ARP, RTCP, ICMP, LLDP
Management protocols       SNMPv3
DHCP client      Yes
Management features
Web-based management      Yes
Quality of Service (QoS) support     Yes
Security algorithms       AES,HTTPS,SSH
DMZ support       Yes
Phone features
Noise reduction       Yes
Call management
Conference call      Yes
Caller ID      Yes
Call waiting       Yes
Ports & interfaces
Modem (RJ-11) ports       2
Ethernet LAN (RJ-45) ports       1
Technical details
Voice codecs      G.711Mu,G.711a,G.726,G.729A,G.729ab
Reset button      Yes
Fax compatibility      T.38
Weight & dimensions
Weight      132.1 g
Dimensions (WxDxH)      100 x 100 x 28 mm
Operational conditions
Storage temperature (T-T)      -10 – 60 °C
Storage relative humidity (H-H)       10 – 95%
Operating temperature (T-T)        0 – 40 °C
Operating relative humidity (H-H)        10 – 90%
Safety       UL 60950 Second Edition, CAN/CSA-C22.2 No. 60950 Second Edition, IEC 60950-1:2005 (Second Edition) + A1:2009 +        A2:2013 and/or AS/NZS 60950.1:2015
Certification       CE Markings per directives 2014/30/EU and 2014/35/EU
Power LED       Yes
LED indicators      Yes

Additional information





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