sig_write        3971 src/ftdm_io.c  	if (ftdmchan->span->sig_write) {
sig_write        3972 src/ftdm_io.c  		status = ftdmchan->span->sig_write(ftdmchan, data, *datalen);
sig_write        1606 src/ftmod/ftmod_r2/ftmod_r2.c 	span->sig_write = NULL;
sig_write         502 src/include/private/ftdm_core.h 	ftdm_channel_sig_write_t sig_write;