Update

src/PDUProcessor/Preprocessor/Client/GSM0338Preprocessor.ts

@@ -0,0 +1,17 @@
+import {PDU} from "../../../CommonObjects";
+import SmppSession from "../../../SmppSession";
+import Preprocessor from "../Preprocessor";
+
+export default class GSM0338Preprocessor extends Preprocessor {
+    applicableCommands: string[] = ['submit_sm', 'deliver_sm'];
+
+    constructor(type: string) {
+        super(type);
+    }
+
+    protected doProcess(session: any, pdu: PDU, entity?: SmppSession | undefined): Promise<any> {
+        return new Promise<any>((resolve, reject) => {
+            pdu.data_coding = 0xf6;
+        });
+    }
+}