Matrix SETU VGFX Quick Start Manual page 33

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All other parameters are fixed for determination of Off-Hook speed except Off-
Hook counter. SETU VGFX supports following options:
512 msec
128 msec
64 msec
8 msec
Default = 8 msec.
Current Limiting: Current Limiting mode is used to limit the loop current.
Enable current limiting mode to limit the loop current in SETU VGFX. It will limit
the loop current to maximum 60mA.
Valid options: Yes/No
Default = No
Minimum Loop Current (mA): Select Minimum Loop Current in this field.
Minimum Loop Current helps to set the minimum loop current at which DAA
operates. SETU VGFX supports following options:
10 mA
12 mA
14 mA
16 mA
Default = 10 mA.
TIP/ Ring Voltage (Volts) Adjustment: Select TIP Ring Voltage in this field. It is
used to adjust TIP/RING Voltage on the line side. SETU VGFX supports
following options for TIP/Ring Voltage Adjustment:
3.1 V
3.2 V
3.35 V
3.5 V
Default = 3.5 V
Ringer Impedance: Select Ringer Impedance in this field. You may select
either 'High' or 'Synthesized'. Some countries require high ring impedance which
is achieved by the DAA module by setting ringer impedance to 'Synthesized'.
Default = High
Ringer Threshold (Vrms): Ringer Threshold is used to decide the level at
which SETU VGFX will generate the ring event. Select the range for Ringer
Threshold (Vrms) in this field. SETU VGFX supports following range for ring
generation:
13.5 - 16.5 Vrms
19.35 - 23.65 Vrms
40.5 - 49.5 Vrms
Matrix SETU VGFX Quick Start
27

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