Push-to-talk

A significant advantage of PTT is the ability for a single person to reach an active talk group with a single button press; users don't need to make several telephone calls to coordinate with a group.

Push-to-talk cellular calls similarly provide half-duplex communications – while one person transmits, the other(s) receive.

This combines the operational advantages of PTT with the interference resistance and other virtues of mobile phones.

In addition to mobile handsets, some services also work on a laptop, desktop, and tablet computers.

Recent development in PTT communications is the appearance of apps on smartphones, some of which can function on multiple platforms.