Dry loop

[2] A dry pair was originally used with security systems but more recently may also be used with digital subscriber line (DSL) service or an Ethernet extender to connect two locations, as opposed to a costlier means such as a Frame Relay.

In the United States, these circuits typically incur a monthly recurring charge of $3.00 per ¼ mile (approximately), plus an additional handling fee of around ($5–10).[when?]

Naked DSL is currently provided by third-party DSL (digital subscriber line) vendors in the provinces of Ontario and Quebec, but incurs an additional dry loop fee (often $5 or more monthly, depending on the distance from the exchange).

There is not yet widespread adoption, as this extra fee often renders dry-loop DSL more costly than comparable cable modem service in most locations.

A Bell Canada "dry loop" DSL connection does supply battery, but the underlying phone line is non-functional except to call 958-ANAC (It may also be possible to call 9-1-1 or the 310-BELL telco business office on a dry loop, however many regions do not support this).