There are two organelles that play a role in the process of glycosylation. We have the rough endoplasmic reticulum as well as the Golgi apparatus, the Golgi complex. Now, within our endoplasmic reticulum, this is where the N linkages are actually formed. So N link glycosylation between the sparring and that respective oligosaccharide begins at the endoplasm reticulum and is completed at the Golgi apparatus. On the other hand, the old linkages are only formed exclusively and entirely inside the Golgi apparatus. Now, to see exactly how the process takes place, let's take a look at this diagram.