Move determination of system packet to System::class

app/Models/System.php

@@ -7,6 +7,7 @@ use Illuminate\Database\Eloquent\Model;
 use Illuminate\Support\Collection;
 use Illuminate\Support\Facades\Auth;
 
+use App\Classes\FTN\Packet;
 use App\Jobs\AddressPoll;
 
 class System extends Model
@@ -249,6 +250,17 @@ class System extends Model
 		});
 	}
 
+	/**
+	 * Return the packet that this system uses
+	 *
+	 * @return Packet
+	 */
+	public function packet(): Packet
+	{
+		return new (collect(Packet::PACKET_TYPES)
+			->get($this->pkt_type ?: config('fido.packet_default')));
+	}
+
 	public function poll(): ?Job
 	{
 		return Job::where('queue',AddressPoll::QUEUE)