<!-- ##### SECTION Title ##### -->
heartbeat

<!-- ##### SECTION Short_Description ##### -->


<!-- ##### SECTION Long_Description ##### -->
<para>

</para>

<!-- ##### SECTION See_Also ##### -->
<para>

</para>

<!-- ##### SECTION Stability_Level ##### -->


<!-- ##### SECTION Image ##### -->


<!-- ##### MACRO HEARTBEAT_DEFAULT_POLICY ##### -->
<para>

</para>



<!-- ##### MACRO HEARTBEAT_REQUEST ##### -->
<para>

</para>



<!-- ##### MACRO HEARTBEAT_RESPONSE ##### -->
<para>

</para>



<!-- ##### MACRO LOCAL_ALLOWED_TO_SEND ##### -->
<para>

</para>



<!-- ##### MACRO LOCAL_NOT_ALLOWED_TO_SEND ##### -->
<para>

</para>



<!-- ##### MACRO MAX_HEARTBEAT_LENGTH ##### -->
<para>

</para>



<!-- ##### VARIABLE ext_mod_heartbeat ##### -->
<para>

</para>


