[asterisk-ss7] dahdi chunk_size chan_ss7

Goke M Aruna goksie at gmail.com
Sat Mar 27 11:23:02 CDT 2010


Can you tell me what version of wanpipe do you use?

Am having error Zaptel device failed to come up.

Possible cause Udev not installed.

Can someone help. I have confimed I have udev

On 3/15/10, Ngo-Vi Hoai-Anh <hoaianh at gmx.de> wrote:
> 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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