Method and system for determining network capacity to implement voice over IP communications

1. A method of predicting the capacity of a data network to have voice over IP communications implemented thereon, comprising:

collecting information corresponding to network data transmission traffic on an organization's network on which it is desired to implement voice over IP communication;

collecting information corresponding to telephone call traffic on the PSTN for said organization;

determining what load the telephone call traffic would impose on the organization's network if implemented on the network as voice over IP traffic from said collected telephone call information; and

determining whether the organization's network is capable of having said call traffic implemented on the network by comparing the network's total capacity to the combined traffic load to be imposed on the network based on the collected information corresponding to network data transmission traffic combined with determined load the call traffic would impose if implemented as voice over IP on the network.

2. The method of claim 1 , wherein said information corresponding to network data transmission traffic is collected from an appliance connected by a router connected to the network for polling the router for current network utilization.

3. The method of claim 1 , wherein said information corresponding to telephone call traffic is obtained from a PBX at a user's site.

4. The method of claim 2 , wherein said information corresponding to telephone call traffic is obtained from a PBX at a user's site.

5. The method of claim 2 , wherein said router is polled with an SNMP collector.

6. The method of claim 2 , wherein said appliance is a personal computer.

7. The method of claim 1 , further comprising assembling said information corresponding to network data transmission traffic and telephone traffic in a database.

8. The method of claim 1 , further comprising collecting said network traffic information and said telephone call traffic information for multiple local area networks interconnected through a frame relay network.

9. The method of claim 8 , further comprising reporting the collected information from all the local area networks to one local area network comprising a headquarters site.

10. A system for determining the capacity of a data network to have voice over IP communications implemented thereon, comprising:

a module for collecting and assembling information corresponding to network data transmission traffic on an organization's network on which it is desired to implement voice over IP communications;

a module for collecting and assembling information corresponding to telephone call traffic on the PSTN for said organization;

a module for assembling said information about network data transmission traffic and telephone call traffic, and for determining the total traffic load on the network if said telephone call traffic is implemented as voice over IP traffic on the network; and

a reporting module for reporting what the total load on the network would be if telephone calling was implemented on the network as voice over IP traffic.

11. The system of claim 10 , further comprising a database for storing the assembled information about network data transmission traffic and telephone call traffic in implemented as voice over IP traffic.

12. The system of claim 10 , wherein said module for assembling said information is connectable to a router, and is configured for polling the router to obtain network data transmission traffic information.

13. The system of claim 10 , wherein the system is implemented on a personal computer connected to the network.

14. The system of claim 10 , wherein said module for collecting and assembling information corresponding to telephone call traffic is configured for receiving data from a PBX at the user's site reflecting telephone call traffic.

15. The system of claim 14 , further comprising means for connecting said telephone call traffic data to data representative of traffic flow on a data network as voice over IP traffic.