diff --git a/api/system-current.txt b/api/system-current.txt
index cdb83c6fb89ef..aea4aa71c1f1d 100644
--- a/api/system-current.txt
+++ b/api/system-current.txt
@@ -6711,6 +6711,7 @@ package android.telephony.ims {
     method public int getServiceType();
     method public static int getVideoStateFromCallType(int);
     method public static int getVideoStateFromImsCallProfile(android.telephony.ims.ImsCallProfile);
+    method public boolean isEmergencyCallTesting();
     method public boolean isVideoCall();
     method public boolean isVideoPaused();
     method public static int presentationToOir(int);
@@ -6719,6 +6720,7 @@ package android.telephony.ims {
     method public void setCallExtraInt(String, int);
     method public void setCallRestrictCause(int);
     method public void setEmergencyCallRouting(int);
+    method public void setEmergencyCallTesting(boolean);
     method public void setEmergencyServiceCategories(int);
     method public void setEmergencyUrns(java.util.List<java.lang.String>);
     method public void updateCallExtras(android.telephony.ims.ImsCallProfile);
diff --git a/telephony/java/android/telephony/emergency/EmergencyNumber.java b/telephony/java/android/telephony/emergency/EmergencyNumber.java
index a5f56bbebd750..e68256d086bc1 100644
--- a/telephony/java/android/telephony/emergency/EmergencyNumber.java
+++ b/telephony/java/android/telephony/emergency/EmergencyNumber.java
@@ -27,6 +27,7 @@ import android.telephony.Rlog;
 import java.lang.annotation.Retention;
 import java.lang.annotation.RetentionPolicy;
 import java.util.ArrayList;
+import java.util.Collections;
 import java.util.HashSet;
 import java.util.List;
 import java.util.Objects;
@@ -176,6 +177,12 @@ public final class EmergencyNumber implements Parcelable, Comparable<EmergencyNu
      * Bit-field which indicates the number is from the platform-maintained database.
      */
     public static final int EMERGENCY_NUMBER_SOURCE_DATABASE =  1 << 4;
+    /**
+     * Bit-field which indicates the number is from test mode.
+     *
+     * @hide
+     */
+    public static final int EMERGENCY_NUMBER_SOURCE_TEST =  1 << 5;
     /** Bit-field which indicates the number is from the modem config. */
     public static final int EMERGENCY_NUMBER_SOURCE_MODEM_CONFIG =
             EmergencyNumberSource.MODEM_CONFIG;
@@ -326,6 +333,21 @@ public final class EmergencyNumber implements Parcelable, Comparable<EmergencyNu
         return mEmergencyServiceCategoryBitmask;
     }
 
+    /**
+     * Returns the bitmask of emergency service categories of the emergency number for
+     * internal dialing.
+     *
+     * @return bitmask of the emergency service categories
+     *
+     * @hide
+     */
+    public @EmergencyServiceCategories int getEmergencyServiceCategoryBitmaskInternalDial() {
+        if (mEmergencyNumberSourceBitmask == EMERGENCY_NUMBER_SOURCE_DATABASE) {
+            return EMERGENCY_SERVICE_CATEGORY_UNSPECIFIED;
+        }
+        return mEmergencyServiceCategoryBitmask;
+    }
+
     /**
      * Returns the emergency service categories of the emergency number.
      *
@@ -577,6 +599,7 @@ public final class EmergencyNumber implements Parcelable, Comparable<EmergencyNu
                 emergencyNumberList.remove(i--);
             }
         }
+        Collections.sort(emergencyNumberList);
     }
 
     /**
@@ -613,6 +636,12 @@ public final class EmergencyNumber implements Parcelable, Comparable<EmergencyNu
         if (first.getEmergencyCallRouting() != second.getEmergencyCallRouting()) {
             return false;
         }
+        // Never merge two numbers if one of them is from test mode but the other one is not;
+        // This supports to remove a number from the test mode.
+        if (first.isFromSources(EMERGENCY_NUMBER_SOURCE_TEST)
+                ^ second.isFromSources(EMERGENCY_NUMBER_SOURCE_TEST)) {
+            return false;
+        }
         return true;
     }
 
@@ -638,4 +667,13 @@ public final class EmergencyNumber implements Parcelable, Comparable<EmergencyNu
         }
         return null;
     }
+
+    /**
+     * Validate Emergency Number address that only allows '0'-'9', '*', or '#'
+     *
+     * @hide
+     */
+    public static boolean validateEmergencyNumberAddress(String address) {
+        return address.matches("[0-9*#]+");
+    }
 }
diff --git a/telephony/java/android/telephony/ims/ImsCallProfile.java b/telephony/java/android/telephony/ims/ImsCallProfile.java
index 525a96a4dae92..59167b7d5bba3 100644
--- a/telephony/java/android/telephony/ims/ImsCallProfile.java
+++ b/telephony/java/android/telephony/ims/ImsCallProfile.java
@@ -347,6 +347,9 @@ public final class ImsCallProfile implements Parcelable {
     private @EmergencyCallRouting int mEmergencyCallRouting =
             EmergencyNumber.EMERGENCY_CALL_ROUTING_UNKNOWN;
 
+    /** Indicates if the call is for testing purpose */
+    private boolean mEmergencyCallTesting = false;
+
     /**
      * Extras associated with this {@link ImsCallProfile}.
      * <p>
@@ -534,9 +537,10 @@ public final class ImsCallProfile implements Parcelable {
                 + ", callType=" + mCallType
                 + ", restrictCause=" + mRestrictCause
                 + ", mediaProfile=" + mMediaProfile.toString()
-                + ", emergencyServiceCategories=" + mEmergencyCallRouting
+                + ", emergencyServiceCategories=" + mEmergencyServiceCategories
                 + ", emergencyUrns=" + mEmergencyUrns
-                + ", emergencyCallRouting=" + mEmergencyCallRouting + " }";
+                + ", emergencyCallRouting=" + mEmergencyCallRouting
+                + ", emergencyCallTesting=" + mEmergencyCallTesting + " }";
     }
 
     @Override
@@ -554,6 +558,7 @@ public final class ImsCallProfile implements Parcelable {
         out.writeInt(mEmergencyServiceCategories);
         out.writeStringList(mEmergencyUrns);
         out.writeInt(mEmergencyCallRouting);
+        out.writeBoolean(mEmergencyCallTesting);
     }
 
     private void readFromParcel(Parcel in) {
@@ -564,6 +569,7 @@ public final class ImsCallProfile implements Parcelable {
         mEmergencyServiceCategories = in.readInt();
         mEmergencyUrns = in.createStringArrayList();
         mEmergencyCallRouting = in.readInt();
+        mEmergencyCallTesting = in.readBoolean();
     }
 
     public static final Creator<ImsCallProfile> CREATOR = new Creator<ImsCallProfile>() {
@@ -784,9 +790,11 @@ public final class ImsCallProfile implements Parcelable {
      * @hide
      */
     public void setEmergencyCallInfo(EmergencyNumber num) {
-        setEmergencyServiceCategories(num.getEmergencyServiceCategoryBitmask());
+        setEmergencyServiceCategories(num.getEmergencyServiceCategoryBitmaskInternalDial());
         setEmergencyUrns(num.getEmergencyUrns());
         setEmergencyCallRouting(num.getEmergencyCallRouting());
+        setEmergencyCallTesting(num.getEmergencyNumberSourceBitmask()
+                == EmergencyNumber.EMERGENCY_NUMBER_SOURCE_TEST);
     }
 
     /**
@@ -842,6 +850,15 @@ public final class ImsCallProfile implements Parcelable {
         mEmergencyCallRouting = emergencyCallRouting;
     }
 
+    /**
+     * Set if this is for testing emergency call, only valid if {@link #getServiceType} returns
+     * {@link #SERVICE_TYPE_EMERGENCY}.
+     */
+    @VisibleForTesting
+    public void setEmergencyCallTesting(boolean isTesting) {
+        mEmergencyCallTesting = isTesting;
+    }
+
     /**
      * Get the emergency service categories, only valid if {@link #getServiceType} returns
      * {@link #SERVICE_TYPE_EMERGENCY}
@@ -892,4 +909,11 @@ public final class ImsCallProfile implements Parcelable {
     public @EmergencyCallRouting int getEmergencyCallRouting() {
         return mEmergencyCallRouting;
     }
+
+    /**
+     * Get if the emergency call is for testing purpose.
+     */
+    public boolean isEmergencyCallTesting() {
+        return mEmergencyCallTesting;
+    }
 }
diff --git a/telephony/java/com/android/internal/telephony/ITelephony.aidl b/telephony/java/com/android/internal/telephony/ITelephony.aidl
index 26fcf8344921c..2b4349b7e85f8 100644
--- a/telephony/java/com/android/internal/telephony/ITelephony.aidl
+++ b/telephony/java/com/android/internal/telephony/ITelephony.aidl
@@ -42,6 +42,7 @@ import android.telephony.ServiceState;
 import android.telephony.SignalStrength;
 import android.telephony.TelephonyHistogram;
 import android.telephony.VisualVoicemailSmsFilterSettings;
+import android.telephony.emergency.EmergencyNumber;
 import android.telephony.ims.aidl.IImsCapabilityCallback;
 import android.telephony.ims.aidl.IImsConfig;
 import android.telephony.ims.aidl.IImsConfigCallback;
@@ -1793,6 +1794,16 @@ interface ITelephony {
      */
     int setImsProvisioningString(int subId, int key, String value);
 
+    /**
+     * Update Emergency Number List for Test Mode.
+     */
+    void updateEmergencyNumberListTestMode(int action, in EmergencyNumber num);
+
+    /**
+     * Get the full emergency number list for Test Mode.
+     */
+    List<String> getEmergencyNumberListTestMode();
+
     /**
      * Enable or disable a logical modem stack associated with the slotIndex.
      */