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         $loop->addTimer(5, function() use ($connection) {
             $deliverSm = new DeliverSm();
             $deliverSm->setSourceAddress(new Address(Ton::international(), Npi::isdn(), '1234567890'));
             $deliverSm->setDestinationAddress(new Address(Ton::international(), Npi::isdn(), '1234567890'));
             return $connection->send($deliverSm);
         });