Grandstream Networks UCM6510 User Manual page 164

PCMA Override
Boost Ringer
Fast Ringer
Low Power
Ring Detect
FXS MWI Mode
If enabled, users can select the impedance value for Two-Wire Impedance
Synthesis (TISS) override. The default setting is 600Ω.
Select the codec to be used for analog lines. North American users should
choose PCMU. All other countries, unless already known, should be
assumed to be PCMA. The default setting is PCMU.
Note:
This option requires system reboot to take effect.
Configure whether normal ringing voltage (40V) or maximum ringing
voltage (89V) for analog phones attached to the FXS port is required. The
default setting is "Normal".
Configure to increase the ringing speed to 25HZ. This option can be used
with "Low Power" option. The default setting is "Normal".
Configure the peak voltage up to 50V during "Fast Ringer" operation. This
option is used with "Fast Ringer". The default setting is "Normal".
If set to "Full Wave", false ring detection will be prevented for lines where
Caller ID is sent before the first ring and proceeded by a polarity reversal,
as in UK. The default setting is "Standard".
Configure the type of Message Waiting Indicator on FXS lines. The default
setting is "FSK".

FSK: Frequency Shift Key Indicator

NEON: Light Neon Bulb Indicator.
UCM6510 IP PBX User Manual
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