Channels are a targeting mechanism that allows you to group, sequence and frequency cap your creative as per requirement.
For Publishers, Channels represent the website structure and for other Networks it represents the different sites on which the ads serve.
Channels enable you to view detailed reporting about the performance of specific pages and ad units.
ZEDO serves ads based on Channel and dimension combinations.
In a particular ad if the targeted channel is un-targeted and the ad has served some impressions on that channel, then the channel is displayed on the Campaign details page without hyperlink. If the channel has not served any impression then the hyperlink is not displayed.