1-866-957-7373 Get a Quote My Account


SKU: ATA186-I1-A Product Line: ATA
  • Cisco ATA186 Analog Telephone Adapter (front)
  • Cisco ATA186 Analog Telephone Adapter (back)

Product Overview

Note: The ATA186-I1-A includes the ATA telephone adapter only - users will need a compatible 5v DC power supply to use this device.While we do not currently sell these on our site, we'd be happy to help you locate one if necessary!

The Cisco ATA186-I1-A (Analog Telephone Adapter) converts traditional telephone handsets into VoIP endpoints, allowing you to use your existing phone hardware on network based telephony platforms. This can be a convenient and cost effective alternative to fully upgrading your companies phone hardware to VoIP handsets, and can allow for the integration of specialty phones that may not have a specific VoIP equivalent.


Each Cisco ATA186-I1-A can provide service to two independently numbered telephones or fax machines, making them ideal for call centers or other high-density telephone deployments, allowing for savings on Ethernet cabling and hardware by requiring only 1 ATA 186 for every 2 endpoints.

Cisco ATA-186-I1-A  Port Diagram

The ATA186-I1-A has 600 ohm impedance - for applications requiring complex impedence you may require an ATA186-I2-A. If you're unsure as to which ATA your project requires, just forward us your hardware information and project details - we'd be happy to assist you.


Cisco ATA186-I1-A Device Specifications

Supported Voice Codecs







Configuration Features



-Web Configuration Support

-Prompt-based touch-tone keypad config

-Basic boot profisioning

-Dial Plan provisioning


RC4 Encryption (configuration files only, no call encryption)

Fax Support

-G.711 fax pass-through

-G.711 fax mode


Cisco ATA186-I1-A Physical Specifications


1.5" x 6.5" x 5.75"



15 oz (aprx. 1 lb)

Power Requirements

+5.0 VDC (1.5A Max)

Cisco Excess
Curious about our low prices?

We offer Cisco Excess hardware straight from the Cisco Excess program.

Cisco Excess hardware is licensed and elligible for Smart Net. 

Click here to learn more»        

Sealed Cisco Box