Q931SetLogCB     2776 src/ftmod/ftmod_isdn/ftmod_isdn.c 	Q931SetLogCB(&isdn_data->q931, &ftdm_isdn_q931_log, span);
Q931SetLogCB     1159 src/isdn/include/Q931.h void Q931SetLogCB(Q931_TrunkInfo_t *trunk, Q931LogCB_t func, void *priv);