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;