sngisdn_set_trace_flag 218 src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_cntrl.c sngisdn_set_trace_flag(signal_data, SNGISDN_TRACE_Q921); sngisdn_set_trace_flag 228 src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_stack_cntrl.c sngisdn_set_trace_flag(signal_data, SNGISDN_TRACE_Q931);