packBytes(macPdu, &bytePos, &bitPos, FBit, FBitSize);
packBytes(macPdu, &bytePos, &bitPos, lcid, lcidSize);
packBytes(macPdu, &bytePos, &bitPos, lenField, lenFieldSize);
packBytes(macPdu, &bytePos, &bitPos, FBit, FBitSize);
packBytes(macPdu, &bytePos, &bitPos, lcid, lcidSize);
packBytes(macPdu, &bytePos, &bitPos, lenField, lenFieldSize);