User guide

46
has an associated frequency and amplitude. Up to four tone elements can be combined – to form a chord,
orplayedinsequence–asatune(seeno_of_times).Anegativeno_of_tonesindicatesthatthetoneswill
be synchronized to a two-second timer (relevant for multi-port ATAs only).
•no_of_times is the total of both on-to-off and off-to-on transitions in the tone pattern. If this value is
positive, it produces a composite tone. If it is negative, the tones are played in sequence. Zero produces
a continuous composite tone
• duration is the length of time in seconds that the call progress tone will be played. A value of zero
means that the tone will be played until instructed otherwise.
•tone_elementX_freq and tone_elementX_db represent the frequency (Hz) and signal level (dB)
of each tone. A negative frequency is used to modulate the prior tone components summed together. A
negativedBmlevelcanbeoffsetbyipbx_tone_gain.
•tone_on_timeX and tone_off_timeX are interleaved Tone On and Tone Off durations in msec. A
value of zero for a Tone On time indicates a continuous tone. A value of zero for a Tone Off time produces
silence, while a negative value (-1) terminates the tone pattern, removing the silencing. (With silencing,
the voice channel is blocked until the tone pattern is stopped.)
Allowed values for frequency are from 0 to 3000Hz. Allowed values for dB levels are from –1 to –40 dB.
The maximum number of tones is 4. The maximum number of on-to-off and off-to-on times counted
individually is 9.
F
or example, the default setting for initial dial tone is “{2, 0, 0, {350, -19, 440, -19}, {0}}”.
“2” is the number of frequency/dB pairs, “350, -19” and “440, -19”. “0” is the number of on/
off transitions in the tone pattern, which means that it is a constant tone. The second “0” indicates that
thetonewillbeplayeduntilotherwiseinstructed.Therstpairoffrequency/dB“350, -19” means
thatthersttoneisat350Hzwithalevelof-19dB.Thesecondpair“440, -19” means that the second
toneisat440Hzwithalevelof-19dB.Thenal“{0}” means that there are no on/off times and that the
tone is constant.
Parameter Description Default
ipbx initial dial tone Initial composite dial tone pat-
tern
{2, 0, 0, {350, -19, 440, -19}, {0}}
ipbx alternate dial tone Alternate dial tone pattern used
with primary VoIP provider not
available
{1, 0, 0, {400, -16}, {0}}
ipbx secondary dial tone Outside line composite dial tone
pattern
{2, 0, 0, {420, -19, 520, -19}, {0}}
ipbx stuttered dial tone Stuttered composite dial tone
pattern
{2, 7, 0, {350, -19, 440, -19},
{100, 110, 100, 110, 100, 110,
0}}
ipbx message wait dial tone Message waiting composite dial
tone pattern
{2, 2, 0, {350, -19, 440, -19},
{160, 160}}
ipbx call forward dial tone Call forward composite dial tone
pattern
{2, 3, 0, {350, -19, 440, -19},
{250, 400, 0}}
ipbx pre ringback tone Pre-ringback tone pattern se-
quence
{4, -8, 0, {440, -16, 494, -19,
523, -19, 587, -19}, {340, 160,
340, 160, 340, 160, 340, 160}}
ipbx ringback tone Ringback composite tone pattern {2, 2, 0, {440, -19, 480, -19},
{2000, 4000}}
ipbx call waiting tone default Non-blocking call waiting single
tone pattern
{1, 2, 0, {440, -16}, {300, 9700}}