Before we describe each of the core field types, let's first make sure that they are all available because by default, not all the available field type modules are active.
We'll need the Link and Telephone type fields to be active. The Link module should be enabled already, but we'll need to activate the Telephone field module.
Visit the modules listing page at Admin | Manage | Extend.
Scroll down to FIELD TYPES and enable the Telephone field, as shown in the following screenshot: