Hi all. Take a look at this:

http://www.cisco.com/en/US/docs/voice_ip_comm/sbcs/hardware/quick/guide/uc5_tele.html

Now basically i need to set up a network for a new customer, and its going to be exactly like that, but with a 2801 instead of a UC520.

At head office ill have a 2801, that will be connected to a DSL router.

At the remote site ill have an 877, and im hoping to make a VPN tunnel through and terminate it on the 2801. Is this possible?

Also another question I have, I need to install an SBS server at head office too. This will need to be visible on the Internet because it'll have exchange on it. Can I set the router to pass all traffic through to the 2801, then let the 2801 send traffic off to the SBS server?