Designing Your Perimeter Network for Office Communications Server 2007 White Paper

Microsoft Released this two days ago, and it fills the gap between the Edge Deployment document and real world deployment questions.

Some of the topics covered include:

Commonly Asked Questions

Architecture and Networking Best Practices

How to Set Up Load Balancers

How to Set Up a Firewall

Summary of Best Practices

A lot of this info has previously only been available via forums and/or newsgroups. Nice to see this formalised and released as guidance.

Grab it here