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Cisco 2-Port Analog Telephone Adapter ATA

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Cisco 2-Port Analog Telephone Adapter ATA


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.

SKU: 4094828 Category:


Features and Benefits:

Feature Benefit
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
Product Specifications:

Feature Specifications
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,
Power 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)
Trivial File Transfer Protocol (TFTP)
Address Resolution Protocol (ARP)
DNS A/AAAA and SRV records
Dynamic Host C

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