BRX-XLR User Guide
19
180-0145-001-R01
6.2
POTS / Voice Lines
Voice (POTS) signal, when present, is transparently handled by the BRX-XLR. The BRX-XLR
incorporates a POTS splitter function to allow the POTS traffic to flow normally while the
ADSL2+/ADSL signals are amplified to obtain the best possible performance over the Outside Plant
(OSP).
6.3
Equipment Connection Diagram
The BRX-XLR is typically deployed adjacent to a splice point facilitating the selection of the xDSL
pairs that require having the bandwidth increased or not.
The following diagram illustrates how the BRX-XLR can be inserted between a DSLAM or MSAN and
the subscribers it serves. Looking at the diagram below, the BRX-XLR is typically installed at a
distance of 5,000-10,000 feet (1.5 to 3 km) from the DSLAM and provides increased bandwidth to a
remote subscriber located up to 18,000 feet away (5.5 km) on a 26 AWG (0.40 mm) copper loop.
Figure 11: BRX-XLR connection diagram
L1: BRX-XLR connection to the DSLAM.
L2: BRX-XLR connection to the CPE Modem.
The BRX-XLR needs to be powered from the POTS sealing current (-48V) originating from the
DSLAM or the Central Office (CO). This is illustrated by Figure 12 below:
