diff --git a/specs.json b/specs.json
index 0bf58f5..280cbfd 100644
--- a/specs.json
+++ b/specs.json
@@ -87,6 +87,7 @@
       "passDtmf": "boolean",
       "playBeep": "boolean",
       "disableBidirectionalAudio": "boolean",
+      "bidirectionalAudio": "#bidirectionalAudio",
       "timeout": "number"
     },
     "required": [
@@ -363,6 +364,7 @@
       "passDtmf": "boolean",
       "playBeep": "boolean",
       "disableBidirectionalAudio": "boolean",
+      "bidirectionalAudio": "#bidirectionalAudio",
       "sampleRate": "number",
       "timeout": "number",
       "transcribe": "#transcribe",
@@ -959,5 +961,12 @@
       "retries": "number",
       "actions": "array"
     }
+  },
+  "bidirectionalAudio" : {
+    "properties": {
+      "enabled": "boolean",
+      "streaming": "boolean",
+      "sampleRate": "number"
+    }
   }
 }
\ No newline at end of file
diff --git a/test/jambonz-verb-test.js b/test/jambonz-verb-test.js
index a6d9c6c..9d9688f 100644
--- a/test/jambonz-verb-test.js
+++ b/test/jambonz-verb-test.js
@@ -314,6 +314,29 @@ test("validate correct verbs", async (t) => {
       "url": "wss://myrecorder.example.com/calls",
       "mixType" : "stereo"
     },
+    {
+      "verb": "listen",
+      "url": "wss://myrecorder.example.com/calls",
+      "mixType" : "stereo",
+      "bidirectionalAudio": {
+        enabled: true,
+        streaming: true,
+        sampleRate: 8000
+     }
+    },
+    {
+      "verb": "config",
+      "listen": {
+        "enable": true,
+        "url": "wss://myrecorder.example.com/calls",
+        "mixType" : "stereo",
+        "bidirectionalAudio": {
+          enabled: true,
+          streaming: true,
+          sampleRate: 8000
+       }
+      }
+    },
     {
       "verb": "message",
       "to": "15083084809",