We have managed to make it work with DAHDI_CHUNKSIZE 40.
We use:
- Sangoma A 108
- Chan_ss7 1.3
- Dahdi-linux-2.2.1
It works but we don't know for sure how stable it is. I would be very
thankful if someone tries and give us some feedback.
Patch on chan_ss7
diff -ur chan_ss7-1.3/mtp.c chan_ss7-chunk40-1.3/mtp.c
--- chan_ss7-1.3/mtp.c 2009-12-06 10:34:42.000000000 +0100
+++ chan_ss7-chunk40-1.3/mtp.c 2010-03-15 11:09:07.000000000 +0100
@@ -1829,7 +1829,8 @@
gettimeofday(&now, NULL);
tdiff = timediff_usec(now, last);
#ifndef MTP_OVER_UDP
- if (tdiff > 5000)
+ //if (tdiff > 5000)
+ if (tdiff > 25000)
if (n_mtp2_state)
fifo_log(m, LOG_NOTICE, "Excessive poll delay %d!\n", tdiff);//xxxx
#endif
diff -ur chan_ss7-1.3/transport.h chan_ss7-chunk40-1.3/transport.h
--- chan_ss7-1.3/transport.h 2009-12-06 10:34:42.000000000 +0100
+++ chan_ss7-chunk40-1.3/transport.h 2010-03-15 10:49:10.000000000 +0100
@@ -37,7 +37,8 @@
#ifdef MTP_OVER_UDP
ZAP_BUF_SIZE = 64,
#else
- ZAP_BUF_SIZE = 16,
+ //ZAP_BUF_SIZE = 16,
+ ZAP_BUF_SIZE = 80,
#endif
};
Patch on dahdi
diff -ur dahdi-linux-2.2.1/drivers/dahdi/dahdi-base.c
/var/tmp/dahdi-linux-2.2.1/drivers/dahdi/dahdi-base.c
--- dahdi-linux-2.2.1/drivers/dahdi/dahdi-base.c 2009-12-28
20:16:37.000000000 +0100
+++ /var/tmp/dahdi-linux-2.2.1/drivers/dahdi/dahdi-base.c 2010-03-15
13:20:23.000000000 +0100
@@ -3047,7 +3047,8 @@
case DAHDI_TONE_MFR1_ST2P:
case DAHDI_TONE_MFR1_ST3P:
/* signaling control tones are always 100ms */
- t->tonesamples = 100 * DAHDI_CHUNKSIZE;
+ /* t->tonesamples = 100 * DAHDI_CHUNKSIZE; */
+ t->tonesamples = 100 * DAHDI_DEFAULT_CHUNKSIZE;
break;
default:
t->tonesamples = global_dialparams.mfv1_tonelen;
@@ -4249,27 +4250,37 @@
continue;
for (i = 0; i < ARRAY_SIZE(z->dtmf); i++) {
- z->dtmf[i].tonesamples = global_dialparams.dtmf_tonelen
* DAHDI_CHUNKSIZE;
+ // z->dtmf[i].tonesamples =
global_dialparams.dtmf_tonelen * DAHDI_CHUNKSIZE;
+ z->dtmf[i].tonesamples = global_dialparams.dtmf_tonelen
* DAHDI_DEFAULT_CHUNKSIZE;
}
/* for MFR1, we only adjust the length of the digits */
for (i = DAHDI_TONE_MFR1_0; i <= DAHDI_TONE_MFR1_9; i++) {
- z->mfr1[i - DAHDI_TONE_MFR1_BASE].tonesamples =
global_dialparams.mfv1_tonelen * DAHDI_CHUNKSIZE;
+ //z->mfr1[i - DAHDI_TONE_MFR1_BASE].tonesamples =
global_dialparams.mfv1_tonelen * DAHDI_CHUNKSIZE;
+ z->mfr1[i - DAHDI_TONE_MFR1_BASE].tonesamples =
global_dialparams.mfv1_tonelen * DAHDI_DEFAULT_CHUNKSIZE;
}
for (i = 0; i < ARRAY_SIZE(z->mfr2_fwd); i++) {
- z->mfr2_fwd[i].tonesamples =
global_dialparams.mfr2_tonelen * DAHDI_CHUNKSIZE;
+ //z->mfr2_fwd[i].tonesamples =
global_dialparams.mfr2_tonelen * DAHDI_CHUNKSIZE;
+ z->mfr2_fwd[i].tonesamples =
global_dialparams.mfr2_tonelen * DAHDI_DEFAULT_CHUNKSIZE;
}
for (i = 0; i < ARRAY_SIZE(z->mfr2_rev); i++) {
- z->mfr2_rev[i].tonesamples =
global_dialparams.mfr2_tonelen * DAHDI_CHUNKSIZE;
+ //z->mfr2_rev[i].tonesamples =
global_dialparams.mfr2_tonelen * DAHDI_CHUNKSIZE;
+ z->mfr2_rev[i].tonesamples =
global_dialparams.mfr2_tonelen * DAHDI_DEFAULT_CHUNKSIZE;
}
}
write_unlock(&zone_lock);
-
+
+ /**
dtmf_silence.tonesamples = global_dialparams.dtmf_tonelen *
DAHDI_CHUNKSIZE;
mfr1_silence.tonesamples = global_dialparams.mfv1_tonelen *
DAHDI_CHUNKSIZE;
mfr2_silence.tonesamples = global_dialparams.mfr2_tonelen *
DAHDI_CHUNKSIZE;
+ */
+
+ dtmf_silence.tonesamples = global_dialparams.dtmf_tonelen *
DAHDI_DEFAULT_CHUNKSIZE;
+ mfr1_silence.tonesamples = global_dialparams.mfv1_tonelen *
DAHDI_DEFAULT_CHUNKSIZE;
+ mfr2_silence.tonesamples = global_dialparams.mfr2_tonelen *
DAHDI_DEFAULT_CHUNKSIZE;
break;
}
diff -ur dahdi-linux-2.2.1/drivers/dahdi/digits.h
/var/tmp/dahdi-linux-2.2.1/drivers/dahdi/digits.h
--- dahdi-linux-2.2.1/drivers/dahdi/digits.h 2008-08-06
01:56:00.000000000 +0200
+++ /var/tmp/dahdi-linux-2.2.1/drivers/dahdi/digits.h 2010-03-15
13:23:02.000000000 +0100
@@ -19,10 +19,14 @@
#ifndef _DIGITS_H
#define _DIGITS_H
-#define DEFAULT_DTMF_LENGTH 100 * DAHDI_CHUNKSIZE
-#define DEFAULT_MFR1_LENGTH 68 * DAHDI_CHUNKSIZE
-#define DEFAULT_MFR2_LENGTH 100 * DAHDI_CHUNKSIZE
-#define PAUSE_LENGTH 500 * DAHDI_CHUNKSIZE
+//#define DEFAULT_DTMF_LENGTH 100 * DAHDI_CHUNKSIZE
+#define DEFAULT_DTMF_LENGTH 100 * DAHDI_DEFAULT_CHUNKSIZE
+//#define DEFAULT_MFR1_LENGTH 68 * DAHDI_CHUNKSIZE
+#define DEFAULT_MFR1_LENGTH 68 * DAHDI_DEFAULT_CHUNKSIZE
+//#define DEFAULT_MFR2_LENGTH 100 * DAHDI_CHUNKSIZE
+#define DEFAULT_MFR2_LENGTH 100 * DAHDI_DEFAULT_CHUNKSIZE
+//#define PAUSE_LENGTH 500 * DAHDI_CHUNKSIZE
+#define PAUSE_LENGTH 500 * DAHDI_DEFAULT_CHUNKSIZE
/* At the end of silence, the tone stops */
static struct dahdi_tone dtmf_silence = {
diff -ur dahdi-linux-2.2.1/include/dahdi/kernel.h
/var/tmp/dahdi-linux-2.2.1/include/dahdi/kernel.h
--- dahdi-linux-2.2.1/include/dahdi/kernel.h 2009-11-12
21:02:24.000000000 +0100
+++ /var/tmp/dahdi-linux-2.2.1/include/dahdi/kernel.h 2010-03-15
13:13:00.000000000 +0100
@@ -94,9 +94,11 @@
/*! Default chunk size for conferences and such -- static right now,
might make
variable sometime. 8 samples = 1 ms = most frequent service
interval possible
for a USB device */
-#define DAHDI_CHUNKSIZE 8
+/*! oroginal #define DAHDI_CHUNKSIZE 8 */
+#define DAHDI_CHUNKSIZE 40
#define DAHDI_MIN_CHUNKSIZE DAHDI_CHUNKSIZE
-#define DAHDI_DEFAULT_CHUNKSIZE DAHDI_CHUNKSIZE
+/*! original #define DAHDI_DEFAULT_CHUNKSIZE DAHDI_CHUNKSIZE */
+#define DAHDI_DEFAULT_CHUNKSIZE 8
#define DAHDI_MAX_CHUNKSIZE DAHDI_CHUNKSIZE
#define DAHDI_CB_SIZE 2
marek cervenka schrieb:
>> Dear folk,
>>
>> I've found this interesting document
>> http://www.sangoma.com/assets/docs/misc/2009_10_09_How_to_Reduce_Asterisk_System_Loads.pdf.
>>
>> After having read it I've tried to set chunk size to 40 for using
>> sangoma + chan_ss7. But it doesn't work. Chan_ss7 seems not to be able
>> able to setup link on mtp level. I got this permanently:
>> ...
>>
>> Has someone already struggled with the same problem? Is there any patch
>> for this?
>>
>
> i have the same problem. no solution
>
> ---------------------------------------
> jabber - cervajs at njs.netlab.cz
> Marek Cervenka
> =======================================
>
>
>
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