This document provides example configurations of voice and video traffic for different link speeds. The amount of bandwidth that can be set aside for priority traffic is configured into the network devices. It can be changed, but not "on-the-fly." A maximum of 70% of the link speed is available for such priority traffic.
The division between voice and video calls must also be made at configuration time and can't vary "on-the-fly."
Use this table for a DS-1 or T-1 link.
| 384 kbps video, max. number of... | 768 kbps video, max. number of... | |||
|---|---|---|---|---|
| configured max | video | voice | video | voice |
| 1151 kbps (70%) | 0 | 14 | 0 | 14 |
| 1151 kbps | 1 | 8 | 1 | 1 |
| 1151 kbps | 2 | 1 | - | - |
| 1000 kbps | 0 | 12 | 0 | 12 |
| 1000 kbps | 1 | 6 | 1 | 0 |
| 1000 kbps | 2 | 0 | - | - |
| 800 kbps | 0 | 10 | 0 | 10 |
| 800 kbps | 1 | 3 | - | - |
So, if you want to use 384 kbps video and only reserve 1000 kbps for priority traffic, you can have no video and 12 voice calls, 1 video and 6 voice calls, or 2 video and no voice calls.
Use this table for two DS-1 links bonded together.
| 384 kbps video, max. number of... | 768 kbps video, max. number of... | |||
|---|---|---|---|---|
| configured max | video | voice | video | voice |
| 2100 kbps (70%) | 0 | 26 | 0 | 25 |
| 2100 kbps | 1 | 20 | 1 | 13 |
| 2100 kbps | 2 | 13 | 2 | 1 |
| 2100 kbps | 3 | 7 | - | - |
| 2100 kbps | 4 | 1 | - | - |
| 1500 kbps | 0 | 18 | 0 | 18 |
| 1500 kbps | 1 | 12 | 1 | 6 |
| 1500 kbps | 2 | 6 | - | - |
| 1500 kbps | 3 | 0 | - | - |
| 1000 kbps | 0 | 12 | 0 | 12 |
| 1000 kbps | 1 | 6 | 1 | 0 |
| 1000 kbps | 2 | 0 | - | - |
Assumptions:
Sites with link speeds faster than 3000 kbps can contact MN.IT for configuration limits.
At sites where multiple circuits are used, the circuits are bonded together using Multi-Link PPP in order to aggregate bandwidth. (The second table above assumes such a link.) The use of multi-link PPP ensures that packets stay ordered correctly and provides for good load balancing across the circuits.
