Dont accept connections when application down

app/Classes/Protocol.php

@@ -124,6 +124,8 @@ abstract class Protocol
 	protected bool $originate;
 	/** Our comms details */
 
+	protected bool $down = FALSE;
+
 	private array $comms;
 
 	protected bool $force_queue = FALSE;
@@ -366,6 +368,9 @@ abstract class Protocol
 		// We are an IP node
 		$this->optionSet(self::O_TCP);
 		$this->client = $client;
+		// @todo This appears to be a bug in laravel? Need to call app()->isDownForMaintenance() twice?
+		app()->isDownForMaintenance();
+		$this->down = app()->isDownForMaintenance();
 
 		switch ($mo->name) {
 			case 'EMSI':