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AMPS: Add DTX support

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When DTX is enabled (-S dtx=2 or 3), a missing SAT tone causes the receiver
to mute audio and insert a low level of comfort noise.
Also the missing SAT tone will not cause the connection to be terminated.
This commit is contained in:
Andreas Eversberg
2017-05-25 09:57:22 +02:00
parent 2c1ab89723
commit bb64c6b3ba
7 changed files with 65 additions and 26 deletions
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4
src/amps/sysinfo.c
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@@ -42,7 +42,7 @@ static struct sysinfo_acc_attempt default_acc_attempt = {
10,
};
void init_sysinfo(amps_si *si, int cmac, int vmac, int dcc, int sid1, int regh, int regr, int pureg, int pdreg, int locaid, int regincr, int bis)
void init_sysinfo(amps_si *si, int cmac, int vmac, int dtx, int dcc, int sid1, int regh, int regr, int pureg, int pdreg, int locaid, int regincr, int bis)
{
int i;
@@ -70,7 +70,7 @@ void init_sysinfo(amps_si *si, int cmac, int vmac, int dcc, int sid1, int regh,
si->word2.e = 1;
si->word2.regh = regh;
si->word2.regr = regr;
si->word2.dtx = 0; /* DTX seems not to work with Dynatac 8000 */
si->word2.dtx = dtx; /* DTX seems not to work with my White Dynatac 8000 */
si->word2.n_1 = 20;
si->word2.rcf = (bis) ? 0 : 1; /* must be set to ignore B/I bit */
si->word2.cpa = 1; /* must be set for combined CC+PC */