+=item nas_heartbeat
+
+Heartbeats the nas associated with this session (see L<FS::nas>).
+
+=cut
+
+sub nas_heartbeat {
+ my $self = shift;
+ my $port = qsearchs('port',{'portnum'=>$self->portnum});
+ my $nas = qsearchs('nas',{'nasnum'=>$port->nasnum});
+ $nas->heartbeat(shift);
+}
+