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SLAC Configuration Parameters
Parameter Description Default
Port Impedance
(See the Values
for Port Impedance table.)
Synthetic impedance matching network
control for a choice of one of 10 common
world-wide configurations
Varies by region
Port RX Gain (GR) (-12 to 6dB)
SLAC receive gain in dB units -1
Port TX Gain (GX) (+12 to 6dB)
SLAC transmit gain in dB units (Note: A
value of 6 dB of attenuation is
automatically applied by the GX gain
block prior to the specified transmit gain.)
5
Audio Clamp Duration (ms)
Audio clamp On time (0 to 65535 ms) 100
Caller ID Type 1 Mode
Caller ID type 1 (on-hook) mode (None,
Belcore MDMF, Belcore SDMF, ETSI
Wink, ETSI Ring, DTMF)
Belcore MDMF
Caller ID Type 2 Mode
Caller ID type 2 (off-hook) mode (None,
Belcore MDMF, Belcore SDMF, ETSI
Wink, ETSI Ring, DTMF)
Belcore MDMF
Message Waiting Mode
Message waiting mode (None, Belcore
MDMF Belcore SDMF, ETSI)
Belcore MDMF
Ring Type
Selects ring waveform type: Sinusoidal or
Trapezoidal
Sinusoidal
Ring Frequency (0 to 60 Hz)
Ringer frequency in Hz (zero to use ring
pattern frequency specification)
0
Ring Transition (ms)
Trapezoidal transition time (0 to 1000ms) 15ms
Ring Amplitude (v)
Ringer voltage in volts (-155v to +1.55v) 85v
Ring Bias (v)
Ringer bias in volts DC (-155v to +1.55v) 0
Message Waiting Type
Selects visual message waiting waveform
type: Sinusoidal or Trapezoidal
Sinusoidal
Message Waiting Frequency (Hz)
Visual message waiting frequency in Hz
(0 to 60Hz)
25Hz
Message Waiting Transition (ms)
Trapezoidal transition time in msec
(0 to 1000ms)
15ms
Message Waiting Amplitude (v)
Visual message waiting voltage in volts
(-155v to +155.v)
50v
Message Waiting Bias (v)
Visual message waiting bias in volts
(-155v to +155v)
0
Values for Port Impedance (SLAC & CODEC)
Index Impedance Country
0 600 (default)
US
1 900
US/Canada
2 600 + 1.0 μF
3 900 + 2.16 μF
30 X6v VoIP Features Technical Reference