Calculations
PVCs
- If you have N sites, there are N(N-1)/2 possible connections
- In this case, you would have 4(3)/2 or 6 possible connections
- Some vendors count this as 6 PVCs, others as 12 PVCs
Access Lines
- You would need four access lines (one for each site)
- Each will multiplex 3 PVCs
- Must be fast enough for the needs of communication with the three other sites