diff --git a/radio/1.4/IRadio.hal b/radio/1.4/IRadio.hal
index 511aa05..a3407a1 100644
--- a/radio/1.4/IRadio.hal
+++ b/radio/1.4/IRadio.hal
@@ -102,14 +102,14 @@
     oneway setDataProfile_1_4(int32_t serial, vec<DataProfileInfo> profiles);
 
     /**
-     * Initiate emergency voice call, with zero or more emergency service category(s) and routing
-     * information for handling the call. Android uses this request to make its emergency call
-     * instead of using @1.0::IRadio.dial if the 'address' in the 'dialInfo' field is identified
-     * as an emergency number by Android.
+     * Initiate emergency voice call, with zero or more emergency service category(s), zero or
+     * more emergency Uniform Resource Names (URN), and routing information for handling the call.
+     * Android uses this request to make its emergency call instead of using @1.0::IRadio.dial
+     * if the 'address' in the 'dialInfo' field is identified as an emergency number by Android.
      *
-     * In multi-sim senario, this radio request is sent through the IRadio service that serves
-     * the subscription the emergency number belongs to, no matter of the PUK/PIN state of the
-     * subscription and the service state.
+     * In multi-sim scenario, if the emergency number is from a specific subscription, this radio
+     * request is sent through the IRadio service that serves the subscription, no matter of the
+     * PUK/PIN state of the subscription and the service state of the radio.
      *
      * Some countries or carriers require some emergency numbers that must be handled with normal
      * call routing or emergency routing. If the 'routing' field is specified as
@@ -119,22 +119,29 @@
      * @1.4::EmergencyNumberRouting#UNKNOWN, Android does not know how to handle the call.
      *
      * If the dialed emergency number does not have a specified emergency service category, the
-     * 'categories' field is set to @1.4::EmergencyServiceCategory#UNSPECIFIED; if the underlying
-     * technology used to request emergency services does not support the emergency service
-     * category, the categories may be ignored.
+     * 'categories' field is set to @1.4::EmergencyServiceCategory#UNSPECIFIED; if the dialed
+     * emergency number does not have specified emergency Uniform Resource Names, the 'urns' field
+     * is set to an empty list. If the underlying technology used to request emergency services
+     * does not support the emergency service category or emergency uniform resource names, the
+     * field 'categories' or 'urns' may be ignored.
      *
-     * Reference: 3gpp TS 22.101, Section 10 - Emergency Calls
+     * Reference: 3gpp 22.101, Section 10 - Emergency Calls;
+     *            3gpp 23.167, Section 6 - Functional description;
+     *            3gpp 24.503, Section 5.1.6.8.1 - General;
+     *            RFC 5031
      *
      * @param serial Serial number of request.
      * @param dialInfo the same @1.0::Dial information used by @1.0::IRadio.dial.
      * @param categories bitfield<@1.4::EmergencyServiceCategory> the Emergency Service Category(s)
      *     of the call.
+     * @param urns the emergency Uniform Resource Names (URN)
      * @param routing @1.4::EmergencyCallRouting the emergency call routing information.
      *
      * Response function is IRadioResponse.emergencyDialResponse()
      */
     oneway emergencyDial(int32_t serial, Dial dialInfo,
-            bitfield<EmergencyServiceCategory> categories, EmergencyCallRouting routing);
+            bitfield<EmergencyServiceCategory> categories, vec<string> urns,
+            EmergencyCallRouting routing);
 
     /**
      * Query the preferred network type bitmap.
diff --git a/radio/1.4/IRadioIndication.hal b/radio/1.4/IRadioIndication.hal
index a58d19c..58b7b70 100644
--- a/radio/1.4/IRadioIndication.hal
+++ b/radio/1.4/IRadioIndication.hal
@@ -27,22 +27,24 @@
      * Report the current list of emergency numbers
      *
      * Each emergency number (@1.4::EmergencyNumber) in the emergency number list contains a
-     * dialing number, zero or more service category(s), mobile country code, mobile network code,
-     * and source(s) that indicate where it comes from.
+     * dialing number, zero or more service category(s), zero or more emergency uniform resource
+     * names, mobile country code, mobile network code, and source(s) that indicate where it comes
+     * from.
      *
      * Radio must report all the valid emergency numbers with known mobile country code, mobile
-     * network code and emergency service categories from all available sources including network
-     * signaling, sim, modem/oem configuration, and default configuration (112 and 911 must be
-     * always available; additionally, 000, 08, 110, 999, 118 and 119 must be available when sim
-     * is not present). Radio shall not report emergency numbers that are invalid in the current
-     * locale. The reported emergency number list must not have duplicate @1.4::EmergencyNumber
-     * entries. Please refer the documentation of @1.4::EmergencyNumber to construct each
-     * emergency number to report.
+     * network code, emergency service categories, and emergency uniform resource names from all
+     * available sources including network signaling, sim, modem/oem configuration, and default
+     * configuration (112 and 911 must be always available; additionally, 000, 08, 110, 999, 118
+     * and 119 must be available when sim is not present). Radio shall not report emergency numbers
+     * that are invalid in the current locale. The reported emergency number list must not have
+     * duplicate @1.4::EmergencyNumber entries. Please refer the documentation of
+     * @1.4::EmergencyNumber to construct each emergency number to report.
      *
      * Radio must report the complete list of emergency numbers whenever the emergency numbers in
      * the list are changed or whenever the client and the radio server are connected.
      *
-     * Reference: 3gpp 22.101, Section 10 - Emergency Calls
+     * Reference: 3gpp 22.101, Section 10 - Emergency Calls;
+     *            3gpp 24.008, Section 9.2.13.4 - Emergency Number List
      *
      * @param type Type of radio indication
      * @param emergencyNumberList Current list of emergency numbers known to radio.
diff --git a/radio/1.4/types.hal b/radio/1.4/types.hal
index 74613af..38ee8e5 100644
--- a/radio/1.4/types.hal
+++ b/radio/1.4/types.hal
@@ -52,20 +52,27 @@
 };
 
 /**
- * Emergency number contains information of number, one or more service category(s), mobile country
- * code (mcc), mobile network country (mnc) and source(s) that indicate where it comes from.
+ * Emergency number contains information of number, one or more service category(s), zero or more
+ * emergency uniform resource names, mobile country code (mcc), mobile network country (mnc) and
+ * source(s) that indicate where it comes from.
  *
- * If the source of the emergency number is associated with country, field ‘mcc’ must be provided;
- * otherwise the field ‘mcc’ must be an empty string.
+ * If the emergency number is associated with country, field ‘mcc’ must be provided, otherwise
+ * field ‘mcc’ must be an empty string. If the emergency number is associated with network
+ * operator, field ‘mcc’ and 'mnc' must be provided, otherwise field ‘mnc’ must be an empty
+ * string. If the emergency number is specified with emergency service category(s), field
+ * 'categories' must be provided, otherwise field 'categories' must be
+ * @1.4::EmergencyServiceCategories::UNSPECIFIED. If the emergency number is specified with
+ * emergency uniform resource names (URN), field 'urns' must be provided, otherwise field 'urns'
+ * must be an empty list.
  *
- * If the source of the emergency number is associated with network operator, field ‘mcc’ and
- * 'mnc' must be provided; otherwise the field ‘mnc’ must be an empty string.
+ * A unique EmergencyNumber has a unique combination of ‘number’, ‘mcc’, 'mnc', 'categories' and
+ * 'urns' fields. Multiple @1.4::EmergencyNumberSource should be merged into one 'sources' field
+ * via bitwise-OR combination for the same EmergencyNumber.
  *
- * A unique EmergencyNumber has a unique combination of ‘number’, ‘mcc’, 'mnc' and 'categories'
- * fields. Multiple @1.4::EmergencyNumberSource should be merged into the bitfield for the same
- * EmergencyNumber.
- *
- * Reference: 3GPP TS 22.101 version 9.1.0 Release 9
+ * Reference: 3gpp 22.101, Section 10 - Emergency Calls;
+ *            3gpp 23.167, Section 6 - Functional description;
+ *            3gpp 24.503, Section 5.1.6.8.1 - General;
+ *            RFC 5031
  */
 struct EmergencyNumber{
     /**
@@ -87,6 +94,10 @@
      */
     bitfield<EmergencyServiceCategory> categories;
     /**
+     * The list of emergency Uniform Resource Names (URN).
+     */
+    vec<string> urns;
+    /**
      * The bitfield of @1.4::EmergencyNumberSource(s). See @1.4::EmergencyNumberSource for the
      * value of each bit.
      */