A dedicated and protected phone line is used to access these features. By simply dialing the number from any phone authorized personnel can make announcements over the masking/paging system. If more security is required, the access can be limited to certain phones. Keeping the access extension number confidential is usually sufficient and preferable.
A system within the module enables emergency announcements to be pre-recorded (for example: “There is an emergency in the building. Please leave immediately”). An emergency sound (a “whoop, whoop” for example) may be added from a menu of ten such tones to draw attention to the forthcoming announcement. A two digit code after dialing the alarm/paging number activates this recording; another two digit code turns it off.
Installation Timed Attenuator TV – 101
When sound masking is installed in new unoccupied space, the volume can be set at the final design level. When introduced in occupied space, it may be important that the occupants do not notice it. Frequently, turning the system on after hours is sufficient but a gradual increase in the volume over a period of time may be preferred.