Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL Electronics Inc.
I N S T R U C T I O N D A T A
Dual-Channel Foreign Exchange Voice Module For
RFL IMUX 2000 Intelligent T1 And E1 Multiplexers
RFL VF-16B (Station End)
RFL VF-16B RFL Electronics Inc.
January 17, 2007 1 (973)
334-3100
WARNING
Extreme care must be used to avoid creating a safety hazard when employing long 2-wire telephone
circuits which extend more than 100 feet (30 meters). Ground potential rise and/or induced AC
voltages can result in injury or death under normal operating conditions and especially under fault
conditions. RFL recommends against the use of this product in applications where the 2-wire
telephone circuit extends beyond the perimeter of the substation ground mat. It is the installer’s
responsibility to ensure that all local, state, federal, and corporate safety standards and practices are
complied with in any installation.
DESCRIPTION
The RFL VF-16B is a Two-Wire Foreign Exchange Station End (FXS) module. It is designed for use
in RFL IMUX 2000 terminal and drop/insert T1 and E1 multiplexers, and other RFL network interface
products. It accepts one or two independent voice channels as input, using PCM coding to convert each
channel into a 64-Kbps digital signal. The digital signal is then transmitted over T1/E1 or other digital
communication facilities.
A circuit with an RFL VF-16B module at one end and an RFL VF-15, 15C or 15E module at the other
end can provide a Foreign Exchange (FX) line or an Off-Premise Extension (OPX) line. An Automatic
Ring Down (ARD) line can be set up by using RFL VF-16B modules at both ends of the circuit, or by
using a VF-16B at one end and a VF-16, VF-16A or VF-16E at the other end. The RFL VF-16B does
not normally require an external ring generator or a –48 Volt supply. However if enhanced distance
and ring capabilities are required, an external ring generator can be connected via a module adapter.
These modules are remote-controllable when installed in an RFL IMUX 2000 remote-controllable
shelf. User-adjustable switches and jumpers allow the configuration of the following parameters:
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