} else if (commandId == SmppConstants.CMD_ID_CANCEL_SM) {
pdu = new CancelSm();
} else if (commandId == SmppConstants.CMD_ID_QUERY_SM) {
pdu = new QuerySm();
} else if (commandId == SmppConstants.CMD_ID_BIND_TRANSCEIVER) {
pdu = new BindTransceiver();
} else if (commandId == SmppConstants.CMD_ID_BIND_TRANSMITTER) {
pdu = new BindTransmitter();
} else if (commandId == SmppConstants.CMD_ID_BIND_RECEIVER) {
pdu = new BindReceiver();
} else if (commandId == SmppConstants.CMD_ID_UNBIND) {