citer            3751 src/ftdm_io.c  	ftdm_iterator_t *citer = NULL;
citer            3766 src/ftdm_io.c  		citer = ftdm_span_get_chan_iterator(span, NULL);
citer            3767 src/ftdm_io.c  		if (!citer) {
citer            3770 src/ftdm_io.c  		for (curr = citer ; curr; curr = ftdm_iterator_next(curr)) {
citer            3784 src/ftdm_io.c  		ftdm_iterator_free(citer);