The name of the default channel is the empty string.

Public contexts, including the main context, are always subscribed to the default channel.

When an adapter or client that is sending events to the correlator does not specify a target channel the event goes to the default channel. There is no need for a public context to subscribe to the default channel.

Events generated by the route statement are not delivered to the default channel.

An adapter that is using Universal Messaging to send events cannot use the default channel. See Configuring IAF adapters to use Universal Messaging.