Alarm circuit
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An alarm circuit (also dry pair or dry loop) is an unconditioned leased pair of telephone wire from a telco. The pair does not have a dial-tone or "battery" (continuous electric potential), as opposed to a "wet pair" (a line usually with no dial tone but with battery). A dry pair is normally used with a security systems, but more recently may also be used with DSL equipment or an ethernet extender to connect two locations, as opposed to a costlier means such as frame relay. The pair in many cases goes through the local central office. Many carriers market dry loops to independent DSL providers, as a BANA or basic analog loop.
Pricing
These circuits usually average an MRC of $3.00 per 1/4 mile, plus an additional handling fee($5-10) in the United States.External links
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