We don't have polarity reversal before first ring I think so. Not confirmed.
I able to see and hear dtmf and ring tones while playing recorded wave file using audacity. As per the instruction given by Mr. Pezhman Lai. I found somthing while googling . The bug instructions as follows https://issues.asterisk.org/view.php?id=9096&nbn=2. I am using 8 port digium tdm card. So I decided edit wctdm24xxp/base.c as per the instruction written in above issue. As of now I didn't touch asterisk chan_dahdi.c. I modified base.c code as follows, static void wctdm_dtmfcheck_fakepolarity(struct wctdm *wc, int card, u8 sample8) { u32 sample16; struct fxo *const fxo = &(wc->mods[card].fxo); /* only look for sound on the line if dtmf flag is on, it is an fxo * card and line is onhook */ if (!dtmf || !(wc->cardflag & (1 << card)) || (wc->modtype[card] != MOD_TYPE_FXO) || fxo->offhook) { return; } /* don't look for noise if we're already processing it, or there is a * ringing tone */ if (!fxo->readcid && !fxo->wasringing && wc->intcount > fxo->cidtimer + 400) { sample16 = DAHDI_XLAW(sample8, wc->chans[card]); if (sample16 > 2000 || sample16 < -2000) { fxo->readcid = 1; fxo->cidtimer = wc->intcount; if (debug && ( card == 2 )) { printk(KERN_DEBUG "DTMF CLIP on <<<%i>>> <%X>\n", card + 1,sample16); } // dahdi_qevent_lock(wc->chans[card], // DAHDI_EVENT_POLARITY); } } else if (fxo->readcid && wc->intcount > fxo->cidtimer + 2000) { /* reset flags if it's been a while */ fxo->cidtimer = wc->intcount; fxo->readcid = 0; } } After compilation of above, I just restarted dahdi and monitored kernel message. I got following messages before receiving call DTMF CLIP on <<<3>>> <68> DTMF CLIP on <<<3>>> <84> DTMF CLIP on <<<3>>> <58> DTMF CLIP on <<<3>>> <78> DTMF CLIP on <<<3>>> <60> DTMF CLIP on <<<3>>> <48> DTMF CLIP on <<<3>>> <60> RING on 1/3! NO RING on 1/3! DTMF CLIP on <<<3>>> <84> DTMF CLIP on <<<3>>> <78> RING on 1/3! NO RING on 1/3! DTMF CLIP on <<<3>>> <68> DTMF CLIP on <<<3>>> <68> DTMF CLIP on <<<3>>> <70> DTMF CLIP on <<<3>>> <A4> DTMF CLIP on <<<3>>> <70> But some calls, I am getting long hexadecimall value as follows, DTMF CLIP on <<<3>>> <48> DTMF CLIP on <<<3>>> <FFFFB64> RING on 1/3! NO RING on 1/3! DTMF CLIP on <<<3>>> <84> DTMF CLIP on <<<3>>> <78> RING on 1/3! NO RING on 1/3! Can u guide me on right Mr.Lali and Cohen.. ? Thanks & Regards, Ashik Ali On Sun, May 29, 2011 at 12:13 PM, Tzafrir Cohen <[email protected]> wrote: > On Sat, May 28, 2011 at 02:34:36PM +0300, Ashik Ali wrote: >> Hi dears, >> >> I am from saudi arabia and using asterisk 1.6.2.13,Dahdi-2.3.0 and >> Digium, Inc. Wildcard AEX800 8-port analog card (PCI-Express) . >> >> I am facing problem with detecting caller id before first ring.I >> recorded the dahdi channel using dahdi_monitor command. Where I am >> able to see and hear caller-id dtmf tones. > > Is there a polarity reversal before the caller ID string is sent? > > -- > Tzafrir Cohen > icq#16849755 jabber:[email protected] > +972-50-7952406 mailto:[email protected] > http://www.xorcom.com iax:[email protected]/tzafrir > > -- > _____________________________________________________________________ > -- Bandwidth and Colocation Provided by http://www.api-digital.com -- > New to Asterisk? Join us for a live introductory webinar every Thurs: > http://www.asterisk.org/hello > > asterisk-users mailing list > To UNSUBSCRIBE or update options visit: > http://lists.digium.com/mailman/listinfo/asterisk-users > -- _____________________________________________________________________ -- Bandwidth and Colocation Provided by http://www.api-digital.com -- New to Asterisk? Join us for a live introductory webinar every Thurs: http://www.asterisk.org/hello asterisk-users mailing list To UNSUBSCRIBE or update options visit: http://lists.digium.com/mailman/listinfo/asterisk-users
