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Product Details
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.
Core Features:
- Voice quality: Offers clear, natural-sounding voice quality via advanced preprocessing, high-performance echo cancellation, voice activity detection, and comfort noise generation
- Cloud provisioning: Enables zero-touch provisioning via TR-069 and XML configuration files
- Security: Provides a complete security solution for both media and signaling
- Problem reporting (PRT): Improves serviceability with a dedicated PRT button for problem reporting and log collection
- IPv6: Enables IPv6 dual stack to help with migration to IPv6
| Weight | 1.04 lbs |
|---|---|
| Dimensions | 9.6 × 6 × 2.5 in |
| Brand | Cisco |
| Number of Ports | 2 FXS |
Physical dimensions (H×W×D) 3.9 x 3.9 x 1.1 in. (100 × 100 × 28 mm)
Weight 4.7 oz (132.1 g)
Hardware Interface: Two RJ-11 FXS ports, one 10/100 Mbps RJ-45 Ethernet port,
Button: Reset / Problem Reporting (PRT)
LED indicators: Power, Network, Phone 1, Phone 2, PRT
Wall mountable
Subscriber Line Interface Circuit
(SLIC)
Ring voltage: 40 to 90 Vpk configurable
Ring frequency accuracy: 1%
Ring waveform: Trapezoidal or sinusoidal
Maximum ringer load: 3 Ringer Equivalence Numbers (RENs)
On-hook voltage (tip and ring): -46 to -56V
Off-hook current: 25 mA +/- 10%
Terminating impedance: 600 ohm resistive, 900 ohm resistive, or 220 ohm + 820 ohm
120 nF complex impedance
Frequency response: 300 to 3400 Hz
Return loss (600 ohm, 300 to 3400 Hz): up to 26 dB
Idle channel noise: <-65 dBm 0p
Longitudinal balance: 58 dB (typical)
Voice quality Mean Opinion Score (MOS): >4.0
Voice quality jitter: <150ms
Networking MAC address
IPv4 only
IPv6 only
IPv4/IPv6 dual stack
Session Initiation Protocol (SIP)
Transmission Control Protocol (TCP)
User Datagram Protocol (UDP)
Real Time Protocol (RTP)
Real Time Control Protocol (RTCP)
HTTP
HTTPS
Trivial File Transfer Protocol (TFTP)
Address Resolution Protocol (ARP)
DNS A/AAAA and SRV records
Dynamic Host Configuration Protocol (DHCP) client
Internet Control Message Protocol (ICMP)
Simple Network Time Protocol (SNTP)
Cisco Discovery Protocol
Link Layer Discovery Protocol (LLDP)
Point-to-Point Protocol over Ethernet (PPPoE)
Quality of Service (QoS) IEEE 802.1p/Q (QoS and VLAN tagging)
Differentiated Services (DiffServ), Type of Service (ToS)
Telephony Anonymous call and call blocking
Call forwarding: No answer, busy, and all
Call hold and resume
Caller ID blocking
Caller ID generation (name and number): Bellcore, BT, and European Telecommunications Standards
Institute (ETSI)
Caller ID with name and number
Call pickup and group pickup
Call transfer, call return, and call back on busy
Call waiting
Configurable ring frequency
Configurable tones and cadences
Disconnect tone
Distinctive ringing: Calling and called number
Do not disturb
Forced Authorization Code (FAC)/Client Matter Code (CMC)
Flash hook timer
Hook flash event signaling
Hotline and warm line calling
Message Waiting Indicator (MWI) tones
Music on hold
Off-hook warning tone
Polarity control
Redial
Selective and anonymous call rejection
SIP redundancy
Speed dial
Streaming audio server: Up to 4 sessions
Three-way conference calling with local mixing
Tip and ring voltage adjustment setting
Visual Messaging Waiting Indicator (VMWI) using Frequency Shift Keying (FSK)
Network Address Translation (NAT)
Session Traversal Utilities for NAT (STUN)
Audio Codec: G.711 a-law, G.711 μ-law, G.729a, G.729ab, G.726
Codec name assignment
Full-duplex audio
Echo cancellation
Voice activity detection
Silence suppression
Configurable silence threshold
Comfort noise generation
Adaptive jitter buffer
Frame loss concealment
Adjustable audio frames per packet
Call progress tone generation
Impedance and gain adjustment
Dynamic audio payload
Fax Real-time fax over IP via T.38 fax relay (Group 3)
Fax pass-through via G.711 (Group 3)
Fax tone detection and pass-through
Automatic negotiation on transmission rate
Provisioning and management Cloud provisioning (remote configuration)
Web-based administration
Interactive Voice Response (IVR)
Automated provisioning and upgrading via HTTP, HTTPS, and TFTP
TR-069
SSH access
Simple Network Management Protocol (SNMPv3)
Report generation and event logging
Dedicated PRT button
Support for RTP statistics
Syslog (multilevel granularity)
Ping and trace route diagnostics
Configuration management: Backup and restore
Dual image
Security Password-protected system reset to factory default
Password-protected administrator and user access authority
Provisioning, configuration, and authentication
HTTPS with factory-installed client certificate
Advanced Encryption Standard (AES) encryption
SIP over Transport Layer Security (TLS1.1 and TLS1.2)
Secure (encrypted) calling using Secure RTP (sRTP)
Encrypted configuration files
Image authentication
Secure boot
Secure Shell (SSH)
Power DC input voltage: 5V DC at 2.4A maximum
Power consumption: 5W
Switching type (100-240V) automatic
Power adapter: 100-240V and 50-60 Hz (26-34 VA) AC input, with 1.8 m cord
Reliability Mean Time Between Failures (MTBF): 300, 000 hours
Operating temperature: 32° to 104°F (0° to 40°C)
Nonoperating temperature: 14° to 140°F (-10° to 60°C)
Humidity: Operating 10% to 90%, noncondensing/nonoperating 10% to 95%, noncondensing
Compliance (regulatory) CE Markings per directives 2014/30/EU and 2014/35/EU
Compliance (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
Compliance (EMC) AS/NZS CISPR 32:2015 Class B
CISPR 32: 2015 Class B
EN 55032: 2015 Class B
EN 61000-3-2: 2014 Class A
EN 61000-3-3: 2013
EN 55024:2010+A1: 2015
EN 61000-4-2: 2009
EN 61000-4-3: 2006+A1:2008+A2:2010
EN 61000-4-4: 2012
EN 61000-4-5: 2014
EN 61000-4-6: 2014+AC：2015
EN 61000-4-8: 2010
EN 61000-4-11: 2004
FCC Part 15, Subpart B
ANSI C63.4-2014
ICES-003 Issue 6: 2016
ANSI C63.4-2014
VCCI-TECHNICAL REQUIREMENTS (VCCI-CISPR 32: 2016) /
CISPR 32: 2015 class B
Shipping & Return
Return Policy
You need to have a Return Authorization (RA) number before returning any products to HSSL Technologies.
For a hard copy of this form and a shipping label, please include your request in the form below.
You can also request an RA online by submitting an RA Request via email. Once you have provided HSSL Technologies with the appropriate information, we will contact you with an assigned RA number.
Defective or DOA Products
DOA or defective products are returned for REPLACEMENT ONLY with the same product/model. Deviations from this policy may result in a 20% Returns Processing Service Charge.
- Defective products must be in the original factory carton with all original packing materials.
- The Return Authorization number must be on the shipping label, not the carton. Please do not write on the carton.
- Returns must be shipped freight prepaid. Products received freight collect, without an RA number, or not approved for return will be refused.
- Return Authorization numbers are valid for fourteen (14) days only. Products returned after expiration will be refused.
- HSSL credits are based on the purchase price or current price, whichever is lower.
General Return Terms
You may return most new, unopened items within 30 days of delivery for a full refund. We will also pay return shipping costs if the return is a result of our error (e.g., you received an incorrect or defective item).
You should expect to receive your refund within approximately six weeks of giving your package to the return shipper. This period includes:
- 5–10 business days for us to receive your return from the shipper
- 3–5 business days for us to process your return
- 5–10 business days for your bank to process the refund
If you need to return an item, please Contact Us with your order number and product details. We will respond quickly with instructions for returning items from your order.
Shipping Policy
We can ship to virtually any address in the world. Note that there are restrictions on some products, and certain products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates based on the availability of your items and the shipping options you select. Depending on the provider, estimated shipping dates may appear on the shipping quotes page.
Please also note that shipping rates for many items are weight-based. The weight of each item can be found on its product detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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My product is missing parts.
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When will my backorder arrive?
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Warranty
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Our dedicated support ensures your systems stay optimized, secure, and ready for what’s next.
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At HSSL, we specialize in delivering cutting-edge IT infrastructure, cloud, and cybersecurity services that empower businesses to thrive in a digital-first world. Our trusted professionals provide reliable insights on:
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Digital Transformation Strategy
Empowering businesses to adapt and grow through modern, secure, and scalable digital infrastructure.
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Protecting your organization from digital threats with proactive monitoring and smart security frameworks.
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