diff --git a/dom/telephony/ipc/PTelephony.ipdl b/dom/telephony/ipc/PTelephony.ipdl
index 229525b5894..25c9a4d43af 100644
--- a/dom/telephony/ipc/PTelephony.ipdl
+++ b/dom/telephony/ipc/PTelephony.ipdl
@@ -30,11 +30,17 @@ struct USSDRequest
   nsString ussd;
 };
 
+struct HangUpConferenceRequest
+{
+  uint32_t clientId;
+};
+
 union IPCTelephonyRequest
 {
   EnumerateCallsRequest;
   DialRequest;
   USSDRequest;
+  HangUpConferenceRequest;
 };
 
 sync protocol PTelephony {
diff --git a/dom/telephony/ipc/TelephonyIPCService.cpp b/dom/telephony/ipc/TelephonyIPCService.cpp
index 1d31ae5c743..a2cec3994e8 100644
--- a/dom/telephony/ipc/TelephonyIPCService.cpp
+++ b/dom/telephony/ipc/TelephonyIPCService.cpp
@@ -253,6 +253,13 @@ TelephonyIPCService::SeparateCall(uint32_t aClientId, uint32_t aCallIndex)
   return NS_OK;
 }
 
+NS_IMETHODIMP
+TelephonyIPCService::HangUpConference(uint32_t aClientId,
+                                      nsITelephonyCallback *aCallback)
+{
+  return SendRequest(nullptr, aCallback, HangUpConferenceRequest(aClientId));
+}
+
 NS_IMETHODIMP
 TelephonyIPCService::HoldConference(uint32_t aClientId)
 {
diff --git a/dom/telephony/ipc/TelephonyParent.cpp b/dom/telephony/ipc/TelephonyParent.cpp
index 4cb5fe4714a..309a27c82e6 100644
--- a/dom/telephony/ipc/TelephonyParent.cpp
+++ b/dom/telephony/ipc/TelephonyParent.cpp
@@ -45,6 +45,8 @@ TelephonyParent::RecvPTelephonyRequestConstructor(PTelephonyRequestParent* aActo
       return actor->DoRequest(aRequest.get_DialRequest());
     case IPCTelephonyRequest::TUSSDRequest:
       return actor->DoRequest(aRequest.get_USSDRequest());
+    case IPCTelephonyRequest::THangUpConferenceRequest:
+      return actor->DoRequest(aRequest.get_HangUpConferenceRequest());
     default:
       MOZ_CRASH("Unknown type!");
   }
@@ -451,6 +453,20 @@ TelephonyRequestParent::DoRequest(const USSDRequest& aRequest)
   return true;
 }
 
+bool
+TelephonyRequestParent::DoRequest(const HangUpConferenceRequest& aRequest)
+{
+  nsCOMPtr<nsITelephonyService> service =
+    do_GetService(TELEPHONY_SERVICE_CONTRACTID);
+  if (service) {
+    service->HangUpConference(aRequest.clientId(), this);
+  } else {
+    return NS_SUCCEEDED(NotifyError(NS_LITERAL_STRING("InvalidStateError")));
+  }
+
+  return true;
+}
+
 nsresult
 TelephonyRequestParent::SendResponse(const IPCTelephonyResponse& aResponse)
 {
diff --git a/dom/telephony/ipc/TelephonyParent.h b/dom/telephony/ipc/TelephonyParent.h
index e88710e092d..cfaec304ff5 100644
--- a/dom/telephony/ipc/TelephonyParent.h
+++ b/dom/telephony/ipc/TelephonyParent.h
@@ -129,6 +129,9 @@ private:
 
   bool
   DoRequest(const USSDRequest& aRequest);
+
+  bool
+  DoRequest(const HangUpConferenceRequest& aRequest);
 };
 
 END_TELEPHONY_NAMESPACE