dial in

Etymology
+, from tuning in to a radio frequency by changing the dial, or dialling a telephone number (originally on a rotary dial).

Verb

 * 1) To configure or set up (particularly a complex machine with many configuration options [especially knobs and dials]).
 * 2) To connect (to a system or service) by telephone.
 * 3) To join or participate in (a conference call).
 * 4)  To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).
 * 1) To join or participate in (a conference call).
 * 2)  To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).
 * 1) To join or participate in (a conference call).
 * 2)  To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).
 * 1)  To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).
 * 1)  To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).
 * 1)  To apprehend and align oneself (to an idea, circumstance, way of thinking, etc.).

Usage notes
When used as a verb, unhyphenated; when used as an adjective, hyphenated.