The term 'summon with a beeper' can be solved by the four letter word 'PAGE'. Paging is a communication technology that was developed in the 1950s and is still used today. It is a two-way system that allows a person to send a message to another person via a beeper or pager. The recipient of the message can then respond to the sender. This technology is often used to summon someone to a specific location or to alert them of an emergency.