What are the differences between autofocus and manual focus?

Forced switching does not detect status of the protection channel. If the protection channel is faulty, switching is still performed. Locked switching means that a fiber cut point is locked and no switching is performed, and the service transmitted over the path that encounters the fiber cut is interrupted. Manual switching detects status of the protection channel. If the protection channel is faulty, switching will not be performed. Exercise switching is not actual switching because it only checks the APS protocol.

In the automatic mode of the extended ECC, you do not need to manually specify the server and client. The IP addresses of NEs can be automatically generated on the same network segment. In manual mode, you need to manually specify the server and client.

1. In terms of functionality, there is no difference between manually extended ECC and automatically extended ECC. Automatically extended ECC is used by default. 2. Manually extended ECC is recommended when there are more than four NEs.

To disable autofocus of VPC620 or VPC600: Configure IR to LOCAL for VPC620, press the back key on the remote control twice to open the menu, and set AF MODE to MANUAL.