diff --git a/asterisk/var_lib_asterisk/scripts/supervisor/ssupervisor.php b/asterisk/var_lib_asterisk/scripts/supervisor/ssupervisor.php
index 210e86d..d1cb0a0 100644
--- a/asterisk/var_lib_asterisk/scripts/supervisor/ssupervisor.php
+++ b/asterisk/var_lib_asterisk/scripts/supervisor/ssupervisor.php
@@ -216,6 +216,16 @@ function GetDaemon($notDaemon) {
         exit(0); //success
     }
 
+    /* PIDFile SYSTEMD
+     *  SYSTEMD irá monitorar esse pid para verificar se ainda ativo
+     */
+    $PIDFile = fopen( "/var/lock/subsys/superivisor.pid", "w+" );
+    $pid = getmypid( )
+    if( $pid == false ){
+        exit( 1 );
+    }
+    fwrite( $PIDFile, $pid);
+    fclose( $PIDFile );
     //  posix_setsid();
 }
 
diff --git a/asterisk/var_lib_asterisk/scripts/supervisor/supervisor.service b/asterisk/var_lib_asterisk/scripts/supervisor/supervisor.service
index 0ecc9bc..4a5554e 100644
--- a/asterisk/var_lib_asterisk/scripts/supervisor/supervisor.service
+++ b/asterisk/var_lib_asterisk/scripts/supervisor/supervisor.service
@@ -1,9 +1,30 @@
+#
+# ExecStartPre
+# If more than one command is specified, the
+# commands are invoked sequentially in the
+# order they appear in the unit file. If one
+# of the commands fails (and is not prefixed
+# with "-"), other lines are not executed,
+# and the unit is considered failed.
+#
+
 [Unit]
-Description=Service Supervisor Simples IP
+Description=Supervisor - Simples IP
+
 [Service]
 Type=forking
+
+# verifica se o serviço está rodando
+ExecStartPre=/bin/bash -c '! /usr/bin/systemctl is-active --quiet supervisor.service'
+
+# Limpa pid em /var/lock/subsys/superivisor.pid
+ExecStartPre=/bin/bash -c "echo > /var/lock/subsys/superivisor.pid"
+
+ExecStart=/var/lib/asterisk/scripts/supervisor/ssupervisor.php --log=/var/log/superivisor.log
+PIDFile=/var/lock/subsys/superivisor.pid
+
 Restart=always
 RestartSec=1
-ExecStart=/usr/bin/php /var/lib/asterisk/scripts/supervisor/ssupervisor.php
+
 [Install]
 WantedBy=multi-user.target