Air and ResKey

Can I connect AirB calendar to Reskey directly or do I need something to link them indirectly?

Need to use iCal links

We don't have them connected. We have air clients request a room and then we do it ourselves. We block the room they want and accept the reservation from air.

We drive our availability calendar on Air using iCal links from our ResKey data, but reservations that come through on Air, we manually enter into ResKey. I don't worry about double booking, although I suppose there is always a possibility of that happening....

As they say, iCal. I think it's one-way, at least it used to be, and it's not real time. That is, your ResKey calendar will automatically update on Air a few times/day, but not instantly as changes are made. So it IS possible for a room to book, but still look available for a while on Air.
Air will show your ResKey availability, but reservations made via Air need to be manually entered in ResKey. Still a LOT better than keeping your availability calendar on Air updated manually.

I'm using MyA and have direct API connection.