Because RFL™ and Hubbell® have a policy of continuous product improvement, we reserve the right to change designs and specifications without notice.
RFL VF-16B RFL Electronics Inc.
January 17, 2007 24 (973)
334-3100
The Logic Array interfaces with the local switches, the remote control functions, and the IMUX data
bus. This configuration and control information (volume settings, ring voltage, on-/off-hook, ring
control, etc) is continually sent between the Logic Array and the microcontroller. The microcontroller
also continually exchanges data with the SLIC.
The audio Pulse Code Modulation (PCM) data is time critical, and is transferred directly between the
Logic Array and the SLIC. The microcontroller has no contact with the PCM data.
The Logic Array provides an interface with the IMUX data bus, inserts and extracts PCM and
signalling data into the appropriate time slot(s), and automatically detects if the VF-16B is installed in
a T1 or E1 chassis and configures the board appropriately. It also verifies some basic signals on the
data bus and checks for improper configuration information. If the Logic Array detects invalid
backplane signals or the timeslots for channel 1 and 2 are the same, the service LED will blink. If a
channel has an invalid timeslot configured, that channel’s enable LED will blink. The other channel’s
operation will not be affected.
ALERTS/ALARMS
The RFL VF-16B module does not report any card-level ALERT or ALARM signals to the shelf
Common Module.
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