freetdm: OPENZAP-158 --resolve map operator calling party category in the openr2 module

libs/freetdm/src/ftmod/ftmod_r2/ftmod_r2.c

@@ -436,6 +436,13 @@ static __inline openr2_calling_party_category_t ftdm_r2_ftdm_cpc_to_openr2_cpc(f
 	case FTDM_CPC_PAYPHONE:
 		return OR2_CALLING_PARTY_CATEGORY_PAY_PHONE;
 
+	case FTDM_CPC_OPERATOR_FRENCH:
+	case FTDM_CPC_OPERATOR_ENGLISH:
+	case FTDM_CPC_OPERATOR_GERMAN:
+	case FTDM_CPC_OPERATOR_RUSSIAN:
+	case FTDM_CPC_OPERATOR_SPANISH:
+		return OR2_CALLING_PARTY_CATEGORY_COLLECT_CALL;
+
 	case FTDM_CPC_INVALID:
 		return OR2_CALLING_PARTY_CATEGORY_UNKNOWN;
 	}