... assistance 2.Doctor to patient 1. Staff paging System IntroductionThis system is for one person page more person. There ... WAITERS, MANAGER--TO--SECRETARIES, TECHNICIAN--TO--WORKERS,..... 2. System Configuration:2.1 Wireless Numeric Keyboard:The calling unit is ... digital coding technology, remarkable property, high receiving and processing information abilityAuto-bit distinguish, call 001, and enter 1, ...