diff --git a/config.sample.json b/config.sample.json
index baa5e68..78a1ad1 100644
--- a/config.sample.json
+++ b/config.sample.json
@@ -14,6 +14,7 @@
         {
             "name": "SENDER-AS13",
             "disabled": true,
+            "outgoing": true,
             "imsi": null,
             "prefix": []
         }
diff --git a/lib/modems.js b/lib/modems.js
index f2ee0ed..16f74f1 100644
--- a/lib/modems.js
+++ b/lib/modems.js
@@ -14,8 +14,13 @@ exports.enabledModems = (arrayOfModem) => {
     return modems.filter((modem) => !modem.disabled);
 };
 
+exports.outgoingModems = (arrayOfModem) => {
+    const modems = arrayOfModem || config.modems || [];
+    return modems.filter((modem) => !modem.disabled && modem.outgoing);
+};
+
 exports.randomModem = (arrayOfModem) => {
-    const modems = this.enabledModems(arrayOfModem);
+    const modems = this.outgoingModems(arrayOfModem);
     const modemCount = modems.count;
 
     if (!modemCount) return null;