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tonezone: Fix congestion tone for Australia

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The Congestion tone in Australia must be reduced by 10 to 15 dB
at every other cadence and the frequencies for both at cadences are 425 Hz.

From: Armen Karlozian <armeniki@hotmail.com>
Signed-off-by: Russ Meyerriecks <rmeyerriecks@digium.com>
remotes/origin/2.10.y
Armen Karlozian 11 years ago committed by Russ Meyerriecks
parent 6c40704fec
commit a109763160
2 changed files with 28 additions and 7 deletions
Show Stats Download Patch File Download Diff File

22
tonezone.c
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@ -89,18 +89,19 @@ static int build_tone(void *data, size_t size, struct tone_zone_sound *t, int *c
int firstnobang = -1;
int freq1, freq2, time;
int modulate = 0;
float gain;
float db, gain;
int used = 0;
dup = strdup(t->data);
s = strtok(dup, ",");
while(s && strlen(s)) {
/* Handle optional ! which signifies don't start here*/
if (s[0] == '!')
if (s[0] == '!') {
s++;
else if (firstnobang < 0) {
} else if (firstnobang < 0) {
PRINT_DEBUG("First no bang: %s\n", s);
firstnobang = *count;
}
if (sscanf(s, "%d+%d/%d", &freq1, &freq2, &time) == 3) {
/* f1+f2/time format */
PRINT_DEBUG("f1+f2/time format: %d, %d, %d\n", freq1, freq2, time);
@ -111,18 +112,31 @@ static int build_tone(void *data, size_t size, struct tone_zone_sound *t, int *c
} else if (sscanf(s, "%d+%d", &freq1, &freq2) == 2) {
PRINT_DEBUG("f1+f2 format: %d, %d\n", freq1, freq2);
time = 0;
db = 1.0;
} else if (sscanf(s, "%d*%d", &freq1, &freq2) == 2) {
PRINT_DEBUG("f1+f2 format: %d, %d\n", freq1, freq2);
modulate = 1;
time = 0;
db = 1.0;
} else if (sscanf(s, "%d/%d", &freq1, &time) == 2) {
PRINT_DEBUG("f1/time format: %d, %d\n", freq1, time);
freq2 = 0;
db = 1.0;
} else if (sscanf(s, "%d@/%d", &freq1, &time) == 2) {
/* The "@" character has been added to enable an
* approximately -20db tone generation of any frequency This has been done
* primarily to generate the Australian congestion tone.
* Example: "425/375,0/375,425@/375,0/375"
*/
PRINT_DEBUG("f1 reduced amplitude/time format: %d, %d\n", freq1,time);
db = 0.3;
freq2 = 0;
} else if (sscanf(s, "%d", &freq1) == 1) {
PRINT_DEBUG("f1 format: %d\n", freq1);
firstnobang = *count;
freq2 = 0;
time = 0;
db = 1.0;
} else {
fprintf(stderr, "tone component '%s' of '%s' is a syntax error\n", s,t->data);
return -1;
@ -137,7 +151,7 @@ static int build_tone(void *data, size_t size, struct tone_zone_sound *t, int *c
td = data;
/* Bring it down -8 dbm */
gain = pow(10.0, (LEVEL - 3.14) / 20.0) * 65536.0 / 2.0;
gain = db*(pow(10.0, (LEVEL - 3.14) / 20.0) * 65536.0 / 2.0);
td->fac1 = 2.0 * cos(2.0 * M_PI * (freq1 / 8000.0)) * 32768.0;
td->init_v2_1 = sin(-4.0 * M_PI * (freq1 / 8000.0)) * gain;

13
zonedata.c
Unescape View File

@ -59,11 +59,18 @@ struct tone_zone builtin_zones[] =
.description = "Australia",
.ringcadence = { 400, 200, 400, 2000 },
.tones = {
{ DAHDI_TONE_DIALTONE, "413+438" },
{ DAHDI_TONE_DIALTONE, "415+440" },
{ DAHDI_TONE_BUSY, "425/375,0/375" },
{ DAHDI_TONE_RINGTONE, "413+438/400,0/200,413+438/400,0/2000" },
/* XXX Congestion: Should reduce by 10 db every other cadence XXX */
{ DAHDI_TONE_CONGESTION, "425/375,0/375,420/375,0/375" },
/* The Australian congestion tone is 425Hz, 375ms On, 375ms Off, with the
* second cadence being half the amplitude of the first; so the first cadence
* is approximately -10dB with the second one being -20dB. Using the update
* ToneZone.c file, this can be accomplished by adding the "@" symbol in front
* of the frequency to reduce amplification, as in the following entry for
* Congestion:
*/
{ DAHDI_TONE_CONGESTION, "425/375,0/375,425@/375,0/375" },
{ DAHDI_TONE_CALLWAIT, "425/100,0/200,425/200,0/4400" },
{ DAHDI_TONE_DIALRECALL, "413+428" },
{ DAHDI_TONE_RECORDTONE, "!425/1000,!0/15000,425/360,0/15000" },

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