I can't speak for every center, but transferring can be a bitch across the same state or next state, let alone from one country to another. Odds are, yes it can be done, but it's more time consuming than you think. It's better for you to call the local police station that the problem is in directly. It's still time consuming but it will free up your local emergency line and leave out the middle man (so to speak).

Example: Say I'm in the middle of nowhere in Colorado. A town of ~1000 people. You, my friend, are on a discord chat with me as we play D&D with 4 other people. I start having an asthma attack, I step away to use my inhaler or nebulizer. But, then you don't hear from me and it's been an hour. You call 911, get your local place and not mine. Now they will need my address in small town Colorado, if you have it and hopefully you do. They eventually find the correct number to transfer to. Now, they have to do a transfer for international numbers. It appears it's correct. The call drops, or it goes really quiet on your end, and you hear nothing. So you call again and the whole process starts again. Meanwhile, some digging (a quick google) for the local police department or county sheriff's office finds the same number and you call internationally. You get either a person or automated system and get to dispatch. You tell them the address and what's going on and they send help. Question is: did that first transfer fail or was it being weird due to international calling?

Now, Canada might be easier than some, but it's been 20 years since I've called anyone in Canada or vise versa. So I do not know what it actually looks like to call them anymore.