1. Start by reading all questions
2. Note all important points and routing requirments
3. Start configuration by device: Switch, R1, R2, R2, CUCM, CUC, CUPS, UCCX
4. Test your configuration (1 hour)
5. Verify, Verify, Verify (if u have time left)

Device-Based Strategy as explained by CCIE Voice GURU (http://ciscovoiceguru.com/1878/device-based-lab-strategy/)

Jad Houdeib CCIE Voice #35919