These links prompt the computer to open a VoIP (voice over IP) program such as Skype to call the number indicated in the link. For example, you may have a button in your publication that a customer can click to call your Support or "Contact Us" line. For publications, we can add a call number link as a specific URL in an External link widget. A call number link example would follow the format of "tel:+18772397522".
More information on External link widgets in general can be found here.
Steps to create a call number link
1) From "All Publications", open Zmags Enriched by clicking on the "Enrichments" button off to the right of your publication in the list.
2) Once Zmags Enriched opens, click on the Link icon in the toolbar (Fig 1.0) on the left hand side of the interface and choose External Link. After this, mark an area on the page on which you want to place the link. (Fig 1.1)
3) This will open the external link dialog box, which has the following properties. In this example, we are using "tel:+1234567890" as our call number link (Fig 1.2):
URL - The phone number to call with "tel:" in front of it.
Open link in - The target property determines in what window an external link is opened. It is not needed for call number links, so leave it at the default value.
Width & Height: The width and height of the link area in Pixels on the page
Top & Left: The exact position of the link in Pixels on the page
External source allows you to use images from the media library in the link area you have defined. The default value is None, which will make the link behave as a normal link.
Opacity determines how transparent the link should be in the Editor. Set to 0% for completely invisible links. Set to 100% for complete opaque links. However, these will only be opaque in the editor, and still will be transparent in your live publication.
4) After creating the link(s) choose File > Save All from the top menu (Fig 1.3) and Exit Zmags Enriched