The Cisco ATA 186 is an analog telephony adapter that allows use of ordinary phones with SIP.
These boxes are sold as part of the Vonage service as well, but note that they cannot readily be converted from Vonage to general purpose use without resetting firmware.
See also
Cisco phones
Asterisk phone cisco ATA18x
These boxes are sold as part of the Vonage service as well, but note that they cannot readily be converted from Vonage to general purpose use without resetting firmware.
See also
Cisco phones
Asterisk phone cisco ATA18x

Comments
333Re: i wanna connect softphone to ata
333i wanna connect softphone to ata
333Re: Re: Cisco ATA 186 factory reset
333resetting if you don't know password
333Re: Cisco ATA 186 factory reset
333blah
333Cisco ATA 186 UPGRADE Version 3.1.0 atasip (Build 040211a)
Pick up the phone and press the button on the ATA. You will hear the prompt say "Configuration Menu".
To check the version number of your firmware, dial "123#" on your telephone.
Hang up the telephone.
Pick up the phone and press the button on the ATA. You will hear the prompt say "Configuration Menu".
To check the build number, press the button on the top of the ATA and dial "123123#".
Please follow the instructions below if you need to upgrade your software.
DO NOT unplug the ATA whilst upgrading.
1. Pick up the phone and press the button on the ATA. You will hear the prompt “Configuration
Menu.”
2. Press 1 0 0 # to access the upgrade menu.
3. Enter the following information into the phone exactly as listed: 213*137*73*159*8000#
4. After a short time (up to 5 minutes), you will hear the words “Upgrade Successful”.
5. Your software has been upgraded successfully. To read the software version again, press 123#.
If the upgrade fails, verify that your ATA is properly configured on your home network and check your ISP connectivity.
333Cisco ATA 186 factory reset
a) Take the phone off hook.
b) The red button on the top of the ATA-186 will illuminate.
c) Press the illuminating red button on the ATA and dial 322873738#. (The numbers spell FACTRESET# on the telephone)
d) Voice prompt will ask you to dial * to save changes you have just made.
e) Press * on your phone's keypad.
f) Hang up the phone.
333Service Contract Source
The contract, with number, can be bought from AMS.net. # yrs for $24.