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Small white rectangular box with one network port and two phone ports

Cisco Systems, Inc.

Cisco Systems, Inc. ATA191-3PW-K9 ATA 191 2-Port Analog Telephone Adapter

SKU CH-2NHZ-WD684 MPN ATA191-3PW-K9

Connects two analog phones or fax machines to a VoIP network via a single 100 Mbps Ethernet port and wall-mountable design

  • SpecificationsInterfaces/Ports PoE (RJ-45) Port: No USB: No Management Por
  • Connect analog phones to VoIP with two FXS ports
  • Single RJ-45 network port simplifies cabling
  • Fast Ethernet delivers 100 Mbps throughput
  • Wall-mountable design saves desk space
  • Multiplatform support eases cloud or on-premise deployment

Cisco ATA 191 Adapter Purpose

The Cisco ATA 191 is a two-port analog telephone adapter that connects legacy phones, fax machines or overhead paging systems to an IP telephony network. It suits small offices, enterprise branches or cloud UCaaS deployments that need to keep existing analog endpoints while migrating to VoIP.

Ports and Mounting

A single Fast Ethernet RJ-45 port provides 100 Mb/sec wired connectivity and the unit operates without Power over Ethernet, so a local power source is required. Two FXS RJ-11 ports each support an independent SIP registration, and the wall-mountable chassis allows placement in wiring closets or on desktops where AC power is available.

Migration Fit and Limits

This adapter replaces a direct analog line connection by registering each port to a SIP trunk or hosted PBX, preserving legacy hardware investment. It does not suit environments that require PoE-powered endpoints, additional network uplinks or more than two simultaneous analog devices.

Highlights

  • Connect analog phones to VoIP with two FXS ports
  • Single RJ-45 network port simplifies cabling
  • Fast Ethernet delivers 100 Mbps throughput
  • Wall-mountable design saves desk space
  • Multiplatform support eases cloud or on-premise deployment

Specifications

BrandCisco Systems, Inc
Model2-Port Analog Telephone Adapter For Multiplatform
Part NumberATA191-3PW-K9
SpecificationsInterfaces/Ports
PoE (RJ-45) Port:
No
USB:
No
Management Port:
No
Number of Network (RJ-45) Ports:
1
Number of FXS (RJ-11) Ports:
2
I/O Expansions
SIM Card Supported:
No
Network & Communication
Ethernet Technology:
Fast Ethernet
Network Standard:
10/100Base-T
Wireless Specifications
Wireless LAN:
No
Power Description
Redundant Power Supply Supported:
No
Physical Characteristics
Form Factor:
Wall Mountable
Desktop
Height:
3.9"
Width:
3.9"
Depth:
1.1"
Weight (Approximate):
4.70 oz
Shipping weight0.54 kg
Package size610 × 305 × 254 mm

Questions about this item

What speed does the single Fast Ethernet RJ-45 port cap at in practice?

The 100 Mb/sec Fast Ethernet link limits throughput to 100 megabits per second for all VoIP traffic.

What mounting options does the desktop-and-wall-mountable chassis provide?

It includes keyhole slots for wall mounting and rubber feet for stable desktop placement.

How is the adapter powered, and what step do installers often miss?

An external power supply connects to the DC jack; the step often missed is plugging the supply in before linking the Ethernet cable.

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