I'll only recommend a vendor-authored white paper if it has something of value. If the paper is basically struttin' peacock marcom in the guise of expertise, I won't waste your time.
So with that caveat, I urge you to check out Six Steps To Getting Your Network Ready for Voice Over IP, a new report from enterprise VoIP solutions provider Telchemy.
I won't hold you in suspense any longer. The six steps (all of which are explained in detail in the paper) are:
1. Define High-Level VoIP requirements;
2. Map Existing Wide Area Network/VPN Capabilities;
3. Verify LAN Readiness;
4. Verify Inter-site Readiness;
5. (Address) Service Provider Relationships;
6. Define Performance Management Architecture and Tools.
I realize these requirements sound quite general, but when you read this excellent white paper, you'll get all the explanation and initial direction you'd expect from a paid consultant.