It is entirely possible that they meant some sort of "militia" Janissary. By 1700 the Janissary had degenerated. With the Devshirme practice ended, the Janissaries began recruiting from local Muslim populations. There were local Janissary units and of course the main force in Istanbul.

I suppose that is what CA was alluding to?

Historical note: The Janissaries were effectively finished as a fighting force with the loss of the slave-soldier status. The Ottomans essentially fought a static front war with the Austrians and later the Russians for well over two centuries, from the early 1600s to the 1800s. So, with the prospect of booty gone, the free men who joined the Janissary regiments would rather stay at home. The musket armed units raised by the Pashas who were the governors of the various districts performed better than most Janissary units at this time.