Details：
Applicable to banks, securities companies, exhibition halls, tax bureaus, auditoriums, parks, scenic spots for help, people looking for large supermarkets, airports, stations, large dust-free workshops, safe city alarms and other unattended places.

Details：
This phone is compatible with most PABX , mainly used for voice communications in public work environment, and to achieve peer ( single) call in a public communications network or private network ;