Convert ATA 186 from SIP/H323 to SCCP/MGCP

Main idea:

1. Download needed image from Cisco.com or from CUCM TFTP (usually file with .zup extension)
2. Get ata186us.exe file (it may be found in zip archive with images for ATA on Cisco.com)
3. Execute ata186us.exe <image_to_upload_on_ATA> -d3 -any2
   You can run ata186us.exe without parameters to get help on usage.
4. Pick up the handset of the phone attached to ATA.
5. Press the function button on ATA (you should hear IVR prompts in handset after that).
6. Press on the ATA phone keypad 100#<IP_address_of_PC>*8000#
   <IP_address_of_PC> - is IP address of PC on which you run ata186us.exe (while entering IP address on the phone separate octets with * button).

After upgrade you should hear prompt in handset with upgrade result (success/fail).

PS. Make sure you have routing between ATA ond PC. Also you may check ATA parameters through web - http://ATA_IP_address

Another way to replace image files on ATA is to make config file in which you point the firmware you want to upload. See contents of zip archive with images for ATA on Cisco.com for information and details.