a telephone interface on an alarm system is for it to dial out to a remote monitor station. the monitor station then contacts the fire/police/owner or other authorities to notify that an alarm has been tripped. such interfaces may or may not have voice capability, most just use modem tones to communicate with a computer.
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a telephone interface on an alarm system is for it to dial out to a remote monitor station. the monitor station then contacts the fire/police/owner or other authorities to notify that an alarm has been tripped. such interfaces may or may not have voice capability, most just use modem tones to communicate with a computer.