As VOChat only allows chat messaging between users of the same Virtual Office (VO) domain, public channel is a channel that allows you to chat with public users - someone that does not have a user account in the your VO domain.

All public channels come with a unique widget code, which can be embedded into websites. Websites that are embedded with these codes will display a chat widget, where visitors can send chat messages through it. You will see chat messages coming from the visitors on the Visitors section of your VOChat, and respond to them quickly and easily.

See how you can enable VOChat for website by creating public channels from this guide.