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Cisco - Hardware: Factory Reset Cisco ATA 186/188

Goal

The purpose of this article is to provide step by step instructions on how to factory reset a Cisco ATA 186 or Cisco ATA 188.

Resolution/Steps

MAKE SURE THAT ATA IS POWERED ON AND NOT PLUGGED INTO NETWORK

Step 1: 

  1. Using an analog phone with full keypad (Unhooked) plugged into the "Phone 1" port.  Press the function button on the top of the ATA. 
    1. "Phone 1" Port
      1. ATA Ports.PNG
    2. Function button:
      1. ATA.PNG
  2. Enter the following: 322873738#*​
  3. Enter * to save
  4. Hang Up
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