I'm just going off of what I remember from school but this is what my notes say;
Zone Table
Zone Intrazone Interzone
1. Best Quality: 100,000 Best Bandwidth: 500
2. Best Quality: 10,000 Best Bandwidth: 128
3. Best Quality: 10,000 Best Bandwidth: 500
Each zone zone has a interzone and a intrazone. Main Office should be configured as zone #1 using settings above. Zone #2 would be a Branch office using the settings above. Zone #3 would be a Router>Remote LAN with a Branch Office using setting #3.