If I update a contact on outlook.com, it doesn't sync (waited now 20 minutes) onto my Nokia 920 WP8.  If I click manually on SYNC on the Phone, then it syncs.

How can I enable automatic syncing (PUSH) from OUTLOOK.COM to my WP8?   Or is this PULL technology, in which case, what is the delay between PULL's and is this configurable?

Thank-you.