Extensive testing of this software has been carried out to ensure that its results are accurate. However, users should be aware of the following:
| • | All analyses are carried out against established traffic models which make assumptions about the nature of telephone traffic. |
| • | Exceptional conditions (e.g. high peak traffic in response to television advertising) can produce unexpected results. |
| • | For Voice over IP, the network design process does not simply involve selecting the VoIP parameters that result in the lowest bandwidth per link. Delay characteristics vary for each voice compression scheme and a designer should always keep in mind that a network must meet quality of service targets such as delay and jitter. |
| • | Users should carefully read the terms of their software licence before using the VoIP Calculator. |
