Hello Jeremy, I've not understood the problem, and the solution you are looking for. You want gsmopen not to recognize DTMFs, so you can analyze the audio with spandsp? Can you give more info ? -giovanni On Wed, Apr 22, 2015 at 2:58 PM, jhorsburgh <jhorsburgh@gmail.com> wrote:
Hello All, I am having some issues detecting DTMF tones and was hoping someone could shed some light on the problem.
*Background* I am using Freeswitch (1.4.14~32bit) with GSMopen to receive calls and process high-speed DTMF signal for use with Alarm Systems. Unfortunately the standard inband DTMF detection is not quite up to the task but spandsp works perfectly.
*Problem* The problem I am having is that the standard inband DTMF detection remains enabled when spandsp is enabled producing duplicates of each detected tone.
Is there a way of disabling DTMF detection with the exception of spandsp?
Any help would be greatly appreciated.
Kind regards, Jeremy
2015-04-22 12:18:22.129468 [DEBUG] mod_gsmopen.cpp:919 rev 1.4.14~32bit [(nil)|37 ][DEBUG_GSMOPEN 919 ][interface1][-1, 5, 5] gsmopen/interface1 CHANNEL got SWITCH_MESSAGE_INDICATE_TRANSCODING_NECESSARY 2015-04-22 12:18:22.569494 [DEBUG] switch_channel.c:488 RECV DTMF 5:2000 2015-04-22 12:18:22.569494 [DEBUG] mod_gsmopen.cpp:745 rev 1.4.14~32bit [(nil)|37 ][DEBUG_GSMOPEN 745 ][interface1][-1, 5, 5] DTMF DETECTED: [5] new_dtmf_timestamp: 1652802529, delta_t: 515839955 2015-04-22 12:18:22.569494 [DEBUG] mod_spandsp_dsp.c:373 DTMF BEGIN DETECTED: [5] 2015-04-22 12:18:22.569494 [DEBUG] switch_channel.c:488 RECV DTMF 5:2000 2015-04-22 12:18:22.749457 [DEBUG] mod_spandsp_dsp.c:385 DTMF END DETECTED: [5], duration = 178 ms 2015-04-22 12:18:23.049446 [DEBUG] switch_channel.c:488 RECV DTMF 3:2000 2015-04-22 12:18:23.049446 [DEBUG] mod_gsmopen.cpp:745 rev 1.4.14~32bit [(nil)|37 ][DEBUG_GSMOPEN 745 ][interface1][-1, 5, 5] DTMF DETECTED: [3] new_dtmf_timestamp: 1653282480, delta_t: 479951 2015-04-22 12:18:23.049446 [DEBUG] mod_spandsp_dsp.c:373 DTMF BEGIN DETECTED: [3] 2015-04-22 12:18:23.049446 [DEBUG] switch_channel.c:488 RECV DTMF 3:2000 2015-04-22 12:18:23.229447 [DEBUG] mod_spandsp_dsp.c:385 DTMF END DETECTED: [3], duration = 165 ms 2015-04-22 12:18:23.529449 [DEBUG] switch_channel.c:488 RECV DTMF 5:2000 2015-04-22 12:18:23.529449 [DEBUG] mod_gsmopen.cpp:745 rev 1.4.14~32bit [(nil)|37 ][DEBUG_GSMOPEN 745 ][interface1][-1, 5, 5] DTMF DETECTED: [5] new_dtmf_timestamp: 1653762488, delta_t: 480008 2015-04-22 12:18:23.549464 [DEBUG] mod_spandsp_dsp.c:373 DTMF BEGIN DETECTED: [5] 2015-04-22 12:18:23.549464 [DEBUG] switch_channel.c:488 RECV DTMF 5:2000 2015-04-22 12:18:23.689495 [DEBUG] mod_spandsp_dsp.c:385 DTMF END DETECTED: [5], duration = 140 ms 2015-04-22 12:18:24.029440 [DEBUG] switch_channel.c:488 RECV DTMF 2:2000 2015-04-22 12:18:24.029440 [DEBUG] mod_gsmopen.cpp:745 rev 1.4.14~32bit [(nil)|37 ][DEBUG_GSMOPEN 745 ][interface1][-1, 5, 5] DTMF DETECTED: [2] new_dtmf_timestamp: 1654262471, delta_t: 499983 2015-04-22 12:18:24.029440 [DEBUG] mod_spandsp_dsp.c:373 DTMF BEGIN DETECTED: [2] 2015-04-22 12:18:24.029440 [DEBUG] switch_channel.c:488 RECV DTMF 2:2000 2015-04-22 12:18:24.169442 [DEBUG] mod_spandsp_dsp.c:385 DTMF END DETECTED: [2], duration = 153 ms 2015-04-22 12:18:24.489445 [DEBUG] switch_channel.c:488 RECV DTMF 5:2000 2015-04-22 12:18:24.489445 [DEBUG] mod_gsmopen.cpp:745 rev 1.4.14~32bit [(nil)|37 ][DEBUG_GSMOPEN 745 ][interface1][-1, 5, 5] DTMF DETECTED: [5] new_dtmf_timestamp: 1654722477, delta_t: 460006 2015-04-22 12:18:24.489445 [DEBUG] mod_spandsp_dsp.c:373 DTMF BEGIN DETECTED: [5] 2015-04-22 12:18:24.489445 [DEBUG] switch_channel.c:488 RECV DTMF 5:2000 2015-04-22 12:18:24.649447 [DEBUG] mod_spandsp_dsp.c:385 DTMF END DETECTED: [5], duration = 153 ms 2015-04-22 12:18:25.609450 [INFO] switch_cpp.cpp:1328 Failed to validate Checksum - '5533552255'
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