Alarm circuit
Encyclopedia
A 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 was originally used with a security system, 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 for basic analog loop or in some locales PANA for plain analog loop, OPX (off-premise extension) line, paging circuit, or finally LADS (local area data service).
In the United States
, these circuits typically incur a monthly recurring charge (MRC) of $3.00 per 1/4 mile (approximately), plus an additional handling fee of around ($5–10).
Telephone line
A telephone line or telephone circuit is a single-user circuit on a telephone communication system...
from a Telco
Telephone company
A telephone company is a service provider of telecommunications services such as telephony and data communications access. Many were at one time nationalized or state-regulated monopolies...
. The pair does not have a dial-tone or "battery" (continuous electric potential
Electric potential
In classical electromagnetism, the electric potential at a point within a defined space is equal to the electric potential energy at that location divided by the charge there...
), as opposed to a "wet pair" (a line usually with no dial tone but with battery).
A dry pair was originally used with a security system, but more recently may also be used with DSL
Digital Subscriber Line
Digital subscriber line is a family of technologies that provides digital data transmission over the wires of a local telephone network. DSL originally stood for digital subscriber loop. In telecommunications marketing, the term DSL is widely understood to mean Asymmetric Digital Subscriber Line ,...
equipment or an Ethernet extender
Ethernet extender
An Ethernet extender is any device used to extend an Ethernet or network segment beyond its inherent distance limitation which is approximately for most common forms of twisted pair Ethernet...
to connect two locations, as opposed to a costlier means such as frame relay
Frame relay
Frame Relay is a standardized wide area network technology that specifies the physical and logical link layers of digital telecommunications channels using a packet switching methodology...
. The pair in many cases goes through the local central office.
Many carriers market dry loops to independent DSL providers, as a BANA for basic analog loop or in some locales PANA for plain analog loop, OPX (off-premise extension) line, paging circuit, or finally LADS (local area data service).
In the United States
Communications in the United States
The primary regulator of communications in the United States is the Federal Communications Commission. It closely regulates all of the industries mentioned below with the exception of newspapers and the Internet service provider industry.- Press :...
, these circuits typically incur a monthly recurring charge (MRC) of $3.00 per 1/4 mile (approximately), plus an additional handling fee of around ($5–10).
See also
- Current loop (4-20 mA)Current loopA current loop describes two different electrical signalling schemes.- Digital :For digital serial communications, a current loop is a communication interface that uses current instead of voltage for signaling...
- Local-loop unbundling
- Permitted Attached Private LinesPermitted Attached Private LinesPermitted Attached Private Lines, abbreviated PAPL, are voice-grade telephone wires that run point-to-point between locations in the telephone company's copper network. Data can travel across the PAPL link at speeds of around 2Mb per second...
- Dry-loop DSL