From: Daniel Knaggs
Sent: 27 March 2012 10:22
To: 'FreeSWITCH Users Help'
Subject: RE: [Freeswitch-users] Strange DTMF Tones On Inbound Calls

OK, it does NOT appear in the recordings.

Here is a spectrum analysis of the call when it happened: -

Frequency (Hz) Level (dB)

15.625000 -59.445583

31.250000 -69.136353

46.875000 -71.569084

62.500000 -72.445877

78.125000 -67.142319

93.750000 -63.964447

109.375000 -61.157677

125.000000 -58.849174

140.625000 -62.083492

156.250000 -51.071819

171.875000 -48.957565

187.500000 -48.156109

203.125000 -48.908588

218.750000 -47.891460

234.375000 -46.257698

250.000000 -43.011139

265.625000 -48.706509

281.250000 -53.241238

296.875000 -52.513802

312.500000 -50.387054

328.125000 -53.275459

343.750000 -56.096489

359.375000 -54.788857

375.000000 -52.283993

390.625000 -50.975601

406.250000 -49.737530

421.875000 -49.870571

437.500000 -50.445431

453.125000 -50.647591

468.750000 -49.450035

484.375000 -48.767914

500.000000 -48.281902

515.625000 -49.419975

531.250000 -52.635048

546.875000 -52.856857

562.500000 -51.675240

578.125000 -50.667599

593.750000 -51.584862

609.375000 -48.992435

625.000000 -48.492191

640.625000 -49.701382

656.250000 -53.005512

671.875000 -54.269699

687.500000 -54.937397

703.125000 -53.922794

718.750000 -51.949009

734.375000 -52.763660

750.000000 -53.731155

765.625000 -54.977795

781.250000 -54.029835

796.875000 -54.375313

812.500000 -54.419693

828.125000 -54.796967

843.750000 -55.052872

859.375000 -53.625359

875.000000 -54.649513

890.625000 -56.736855

906.250000 -57.202946

921.875000 -56.587177

937.500000 -57.263260

953.125000 -56.744713

968.750000 -57.710808

984.375000 -58.118694

1000.000000 -60.595867

1015.625000 -60.736752

1031.250000 -57.966949

1046.875000 -58.101311

1062.500000 -59.093056

1078.125000 -59.889881

1093.750000 -59.972092

1109.375000 -59.728626

1125.000000 -58.060120

1140.625000 -56.506371

1156.250000 -55.109329

1171.875000 -54.278183

1187.500000 -56.115913

1203.125000 -57.535069

1218.750000 -58.304485

1234.375000 -58.614723

1250.000000 -58.873520

1265.625000 -61.268688

1281.250000 -62.702538

1296.875000 -63.828163

1312.500000 -63.712082

1328.125000 -65.020050

1343.750000 -64.481941

1359.375000 -62.652424

1375.000000 -61.640785

1390.625000 -61.719952

1406.250000 -61.451962

1421.875000 -58.490433

1437.500000 -57.193993

1453.125000 -56.973965

1468.750000 -57.940182

1484.375000 -59.935654

1500.000000 -61.829227

1515.625000 -63.259266

1531.250000 -62.169945

1546.875000 -61.958508

1562.500000 -62.018082

1578.125000 -60.562317

1593.750000 -59.146374

1609.375000 -58.868763

1625.000000 -60.028801

1640.625000 -59.241119

1656.250000 -60.101322

1671.875000 -60.429554

1687.500000 -60.538834

1703.125000 -61.073635

1718.750000 -60.375114

1734.375000 -60.152672

1750.000000 -59.529144

1765.625000 -59.783649

1781.250000 -61.850414

1796.875000 -63.506111

1812.500000 -63.869320

1828.125000 -62.442127

1843.750000 -62.519482

1859.375000 -63.814472

1875.000000 -63.300858

1890.625000 -61.998482

1906.250000 -62.199738

1921.875000 -61.745621

1937.500000 -61.611210

1953.125000 -61.174740

1968.750000 -60.504318

1984.375000 -60.277737

2000.000000 -61.696060

2015.625000 -61.693054

2031.250000 -62.755184

2046.875000 -63.983723

2062.500000 -63.584675

2078.125000 -62.943420

2093.750000 -63.238541

2109.375000 -62.929970

2125.000000 -62.243599

2140.625000 -60.967789

2156.250000 -60.915421

2171.875000 -61.997654

2187.500000 -63.702518

2203.125000 -64.316109

2218.750000 -63.577995

2234.375000 -63.250530

2250.000000 -63.107010

2265.625000 -62.953743

2281.250000 -62.933647

2296.875000 -61.956242

2312.500000 -62.948036

2328.125000 -64.375603

2343.750000 -64.296860

2359.375000 -63.552139

2375.000000 -62.556362

2390.625000 -62.979954

2406.250000 -64.505875

2421.875000 -65.626236

2437.500000 -65.732819

2453.125000 -66.130798

2468.750000 -65.920502

2484.375000 -64.183731

2500.000000 -63.387459

2515.625000 -63.110027

2531.250000 -64.085106

2546.875000 -64.269905

2562.500000 -64.181808

2578.125000 -64.600060

2593.750000 -63.998692

2609.375000 -63.854473

2625.000000 -65.015961

2640.625000 -65.751480

2656.250000 -66.293800

2671.875000 -66.494102

2687.500000 -66.300240

2703.125000 -66.383118

2718.750000 -66.466385

2734.375000 -65.733604

2750.000000 -65.110283

2765.625000 -65.537567

2781.250000 -66.125465

2796.875000 -65.979088

2812.500000 -64.833984

2828.125000 -63.773678

2843.750000 -64.419113

2859.375000 -64.800369

2875.000000 -64.710480

2890.625000 -64.088387

2906.250000 -64.790306

2921.875000 -65.160469

2937.500000 -65.285408

2953.125000 -66.030342

2968.750000 -65.027481

2984.375000 -64.623558

3000.000000 -65.082748

3015.625000 -63.680820

3031.250000 -62.836716

3046.875000 -62.210663

3062.500000 -61.578278

3078.125000 -62.397720

3093.750000 -63.185940

3109.375000 -62.439983

3125.000000 -62.382778

3140.625000 -63.123928

3156.250000 -64.276588

3171.875000 -65.444725

3187.500000 -65.891289

3203.125000 -65.480240

3218.750000 -64.761063

3234.375000 -65.140015

3250.000000 -66.010643

3265.625000 -66.964401

3281.250000 -67.296051

3296.875000 -66.430000

3312.500000 -66.564758

3328.125000 -67.878830

3343.750000 -67.748436

3359.375000 -68.965981

3375.000000 -70.426888

3390.625000 -71.400375

3406.250000 -72.067627

3421.875000 -71.944176

3437.500000 -72.285637

3453.125000 -71.983047

3468.750000 -72.565109

3484.375000 -72.350845

3500.000000 -72.335533

3515.625000 -72.608849

3531.250000 -72.417786

3546.875000 -73.100441

3562.500000 -73.461548

3578.125000 -73.558250

3593.750000 -73.218422

3609.375000 -73.994888

3625.000000 -74.379204

3640.625000 -74.896202

3656.250000 -74.944405

3671.875000 -74.958710

3687.500000 -75.029655

3703.125000 -74.314133

3718.750000 -74.855209

3734.375000 -76.021591

3750.000000 -76.441444

3765.625000 -77.122787

3781.250000 -77.733589

3796.875000 -79.138847

3812.500000 -80.206360

3828.125000 -80.391960

3843.750000 -81.214249

3859.375000 -81.434105

3875.000000 -82.234749

3890.625000 -82.529884

3906.250000 -82.929169

3921.875000 -83.735237

3937.500000 -84.770660

3953.125000 -84.203438

3968.750000 -84.455025

3984.375000 -85.116302

2012-03-27 09:50:40.412101 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=320/320/2000 seq=38825 lw=28160

2012-03-27 09:50:40.433101 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=480/480/2000 seq=38826 lw=28320

2012-03-27 09:50:40.454100 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=640/640/2000 seq=38827 lw=28480

2012-03-27 09:50:40.475100 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=800/800/2000 seq=38828 lw=28640

2012-03-27 09:50:40.496100 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=960/960/2000 seq=38829 lw=28800

2012-03-27 09:50:40.517100 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=1120/1120/2000 seq=38830 lw=28960

2012-03-27 09:50:40.538100 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=1280/1280/2000 seq=38831 lw=29120

2012-03-27 09:50:40.559099 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=1440/1440/2000 seq=38832 lw=29280

2012-03-27 09:50:40.580099 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=1600/1600/2000 seq=38833 lw=29440

2012-03-27 09:50:40.601099 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=1760/1760/2000 seq=38834 lw=29600

2012-03-27 09:50:40.622098 [DEBUG] switch_rtp.c:2323 Send middle packet for [B] ts=28000 dur=1920/1920/2000 seq=38835 lw=29760

2012-03-27 09:50:40.643098 [DEBUG] switch_rtp.c:2323 Send end packet for [B] ts=28000 dur=2080/2080/2000 seq=38836 lw=29760

2012-03-27 09:50:40.643098 [DEBUG] switch_rtp.c:2323 Send end packet for [B] ts=28000 dur=2080/2080/2000 seq=38837 lw=29760

2012-03-27 09:50:40.643098 [DEBUG] switch_rtp.c:2323 Send end packet for [B] ts=28000 dur=2080/2080/2000 seq=38838 lw=29760

Any ideas?

From: freeswitch-users-bounces@lists.freeswitch.org [mailto:freeswitch-users-bounces@lists.freeswitch.org] On Behalf Of Michael Collins
Sent: 26 March 2012 18:39
To: FreeSWITCH Users Help
Subject: Re: [Freeswitch-users] Strange DTMF Tones On Inbound Calls

On Mon, Mar 26, 2012 at 3:01 AM, Daniel Knaggs <Daniel.Knaggs@realitysolutions.co.uk> wrote:

OK, call recording has been setup – waiting for it to happen now.

Interestingly, before I issue the “record_session” application (and of course the “RECORD_*” variables) I had to execute “ring_ready” then “pre_answer” otherwise the caller gets silence (changing the order of those two commands results in silence).

I find it odd that just doing a pre_answer wouldn't be sufficient. A pre_answer will send a 183 w/SDP whereas ring_ready simply sends a 180. In any case, I'm glad you got your recordings. I also find it curious that only the "letter" DTMFs are being detected. Let us know if you actually hear those tones in the audio stream.

-MC