B300 Phone Instructions ((install)) - Opticom
The B300 has several (often labeled as DSS keys). How to use:
The Opticom B300 is famous for its “Loud” profile, designed for hearing-impaired users. opticom b300 phone instructions
Ensure the line cord is clicked securely into both the phone and the wall jack. The B300 has several (often labeled as DSS keys)