Enable systems to configure their packet type

app/Models/Address.php

@@ -650,8 +650,9 @@ class Address extends Model
 		if (! $ao)
 			return NULL;
 
-		// @todo make packet type configurable by each system
-		$o = new Packet\FSC48;
+		// Get packet type
+		$type = collect(Packet::PACKET_TYPES)->get($this->system->pkt_type ?: config('app.default_pkt'));
+		$o = new $type;
 		$o->addressHeader($ao,$this);
 
 		// $oo = Netmail/Echomail Model