299 bloor call control.

I'm hoping you may be a kind to help a lady writing a book. In YouTube video, TTC Victoria Park Subway 36, announcer says "299 Bloor," "299 St. George." Could you please tell me what the 299 meant or stood for? I see in your name 'call control,' but that doesn't clarify it for me. It is very important to the story in my book about the Victoria Park Subway station in 1975. Thank you ever so much. I am most grateful.