Hi everybody! I'm trying this code for generate a waiting call tone in loop. But it don't hear nothing. What i'm wrong? public synchronized int startPjMediaWaitingTone() { int status = ensureDialtoneGen(); if (status != pjsua.PJ_SUCCESS) { return status; } stopSending(); pjmedia_tone_desc[] tone = new pjmedia_tone_desc[1]; tone[0] = new pjmedia_tone_desc(); tone[0].setVolume((short) 0); tone[0].setOn_msec((short) 100); tone[0].setOff_msec((short) 200); tone[0].setFreq1((short)440); tone[0].setFreq2((short)350); pjsua.pjmedia_tonegen_play(dialtoneGen, 1, tone, pjsuaConstants.PJMEDIA_TONEGEN_LOOP); return status; } Thank you! -- Informatica Milano di Joas Scicchitano Via Vincenzo Monti 30 - Sesto San Giovanni (MI) Tel./Cell: 338.11.87.999 Orari di apertura: Dal Luned? al Venerd? 08.45 / 12.30 - 14.00 / 17.15