IN_ITC_A31KHZ 510 src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_support.c return IN_ITC_A31KHZ; IN_ITC_A31KHZ 543 src/ftmod/ftmod_sangoma_isdn/ftmod_sangoma_isdn_support.c case IN_ITC_A31KHZ: