my_write_sample     3 src/testcid.c  ftdm_status_t my_write_sample(int16_t *buf, ftdm_size_t buflen, void *user_data);
my_write_sample    70 src/testcid.c  		ftdm_fsk_modulator_init(&fsk_trans, FSK_BELL202, 8000, &fsk_data, -14, 180, 5, 300, my_write_sample, &foo);