diff --git a/src/com/android/phone/PhoneInterfaceManager.java b/src/com/android/phone/PhoneInterfaceManager.java
index b22b66d..e5e9fe7 100755
--- a/src/com/android/phone/PhoneInterfaceManager.java
+++ b/src/com/android/phone/PhoneInterfaceManager.java
@@ -18,6 +18,7 @@
 
 import static android.content.pm.PackageManager.PERMISSION_GRANTED;
 
+import static com.android.internal.telephony.PhoneConstants.PHONE_TYPE_IMS;
 import static com.android.internal.telephony.PhoneConstants.SUBSCRIPTION_KEY;
 
 import android.Manifest.permission;
@@ -149,6 +150,8 @@
 import com.android.internal.telephony.emergency.EmergencyNumberTracker;
 import com.android.internal.telephony.euicc.EuiccConnector;
 import com.android.internal.telephony.ims.ImsResolver;
+import com.android.internal.telephony.imsphone.ImsPhone;
+import com.android.internal.telephony.imsphone.ImsPhoneCallTracker;
 import com.android.internal.telephony.metrics.TelephonyMetrics;
 import com.android.internal.telephony.uicc.IccCardApplicationStatus.AppType;
 import com.android.internal.telephony.uicc.IccIoResult;
@@ -7219,4 +7222,32 @@
             Binder.restoreCallingIdentity(identity);
         }
     }
+
+    /**
+     * Updates whether conference event pacakge handling is enabled.
+     * @param isCepEnabled {@code true} if CEP handling is enabled (default), or {@code false}
+     *                                 otherwise.
+     */
+    @Override
+    public void setCepEnabled(boolean isCepEnabled) {
+        TelephonyPermissions.enforceShellOnly(Binder.getCallingUid(), "setCepEnabled");
+
+        final long identity = Binder.clearCallingIdentity();
+        try {
+            Rlog.i(LOG_TAG, "setCepEnabled isCepEnabled=" + isCepEnabled);
+            for (Phone phone : PhoneFactory.getPhones()) {
+                Phone defaultPhone = phone.getImsPhone();
+                if (defaultPhone != null && defaultPhone.getPhoneType() == PHONE_TYPE_IMS) {
+                    ImsPhone imsPhone = (ImsPhone) defaultPhone;
+                    ImsPhoneCallTracker imsPhoneCallTracker =
+                            (ImsPhoneCallTracker) imsPhone.getCallTracker();
+                    imsPhoneCallTracker.setConferenceEventPackageEnabled(isCepEnabled);
+                    Rlog.i(LOG_TAG, "setCepEnabled isCepEnabled=" + isCepEnabled + ", for imsPhone "
+                            + imsPhone.getMsisdn());
+                }
+            }
+        } finally {
+            Binder.restoreCallingIdentity(identity);
+        }
+    }
 }
diff --git a/src/com/android/phone/TelephonyShellCommand.java b/src/com/android/phone/TelephonyShellCommand.java
index a59c9c4..a34abc0 100644
--- a/src/com/android/phone/TelephonyShellCommand.java
+++ b/src/com/android/phone/TelephonyShellCommand.java
@@ -53,6 +53,10 @@
     private static final String IMS_GET_CARRIER_SERVICE = "get-ims-service";
     private static final String IMS_ENABLE = "enable";
     private static final String IMS_DISABLE = "disable";
+    // Used to disable or enable processing of conference event package data from the network.
+    // This is handy for testing scenarios where CEP data does not exist on a network which does
+    // support CEP data.
+    private static final String IMS_CEP = "conference-event-package";
 
     private static final String SMS_GET_APPS = "get-apps";
     private static final String SMS_GET_DEFAULT_APP = "get-default-app";
@@ -131,6 +135,8 @@
         pw.println("  ims disable [-s SLOT_ID]");
         pw.println("    disables IMS for the SIM slot specified, or for the default voice SIM");
         pw.println("    slot if none is specified.");
+        pw.println("  ims conference-event-package [enable/disable]");
+        pw.println("    enables or disables handling or network conference event package data.");
     }
 
     private void onHelpSms() {
@@ -190,6 +196,9 @@
             case IMS_DISABLE: {
                 return handleDisableIms();
             }
+            case IMS_CEP: {
+                return handleCepChange();
+            }
         }
 
         return -1;
@@ -466,6 +475,22 @@
         return 0;
     }
 
+    private int handleCepChange() {
+        Log.i(LOG_TAG, "handleCepChange");
+        String opt = getNextArg();
+        if (opt == null) {
+            return -1;
+        }
+        boolean isCepEnabled = opt.equals("enable");
+
+        try {
+            mInterface.setCepEnabled(isCepEnabled);
+        } catch (RemoteException e) {
+            return -1;
+        }
+        return 0;
+    }
+
     private int getDefaultSlot() {
         int slotId = SubscriptionManager.getDefaultVoicePhoneId();
         if (slotId <= SubscriptionManager.INVALID_SIM_SLOT_INDEX