User guide

50
slac ring bias Ringer bias in volts 0
slac message waiting type Selects visual message waiting
waveform type of sinusoidal or
trapezoidal
Sinusoidal
slac message waiting frequency Visual message waiting frequen-
cy in Hz
25
slac message waiting transition Trapezoidal transition time in
msec
15
slac message waiting amplitude Visual message waiting voltage
in volts
50
slac message waiting bias Visual message waiting bias in
volts
0
slac dtmf caller id start code The parameters ‘slac dtmf caller
id start code’ and ‘slac dtmf
caller id end code’ allow you
tocongurethestartandend
codes respectively.
slac dtmf caller id end code The parameters ‘slac dtmf caller
id start code’ and ‘slac dtmf
caller id end code’ allow you
tocongurethestartandend
codes respectively.
slac dtmf caller id polarity
reversal
DTMF polarity reversal as per
ETSI EN 300 659-1: Subscriber
line protocol over the local loop
for display (and related) services
; Part 1 : On-hook data transmis-
sion. The parameter ‘slac dtmf
caller id polarity reversal’ allow
you to enable to disable polarity
reversal during DTMF caller ID
transmission. This function will
invert voltage when DTMF tones
are transmitted on the analogue
interface (Caller Id) before ring-
ing.
Disabled
SLAC Command Strings:
Parameter Description Default
slac initialization commands 100
slac impedance commands 1 SLAC commands to synthesize
600 ohm impedance
(many)
slac impedance commands 2 SLAC commands to synthesize
900 ohm impedance
(many)
slac impedance commands 3 SLAC commands to synthesize
600 ohm + 1.0uF impedance
(many)
slac impedance commands 4 SLAC commands to synthesize
900 ohm + 2.16uF impedance
(many)
slac impedance commands 5 SLAC commands to synthesize
270 ohm + 750 ohm || 150nF
impedance
(many)