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PUBLIC ADDRESS PAGING INTERFACES
DIAL-UP PA INTERFACE
[Product Code: MD-4900 PA]
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MD-4900 PA Interface_G01141B_Issue_5.pdf
The Mastercall Dial-up PA Interface, with an inbuilt line-powered pre-amplifier, interfaces a standard telephone line, analog PABX extension, VoIP FXS or ATA port or TIPT IAD port to a line-level input of a Public Address amplifier. It allows people to make PA announcements from any telephone simply by dialing the PA extension number. The MD-4900 has an inbuilt microprocessor controlled busy tone and disconnect tone detector so that calls to the PA disconnect virtually the moment the caller hangs up. This system is fully ACMA compliant and isolates the telephone line from the PA system.