2. Large Enterprise with Multiple Locations Source: Avaya

3. An Avaya S8100 Media Server, networked to an Avaya S8700 Media Server, could be implemented that executes Avaya MultiVantage Software locally, but accesses the centralized communications applications, such as messaging, over the WAN. The Avaya S8100 Server is integrated with the Avaya G600 Media Gateway to provide trunk access to the PSTN for local calling.

4. Alternatively, the enterprise could install an Avaya G700 Media Gateway and utilize the system at the main site to provide both Avaya MultiVantage Software capabilities and communications applications over the WAN. In this case, the Avaya G700 Gateway could be equipped an Avaya S8300 Server module with a Local Survivable Processor (LSP). In the event of a WAN link failure, Headquarters system failure, or extreme congestion, the Avaya S8300 Server would immediately activate and run Avaya MultiVantage Software locally to maintain the remote site functionality.

5. Mid-to-Large Enterprises Source: Avaya

6. The Avaya ECLIPS distributed architecture can also be applied to a campus network for a mid to large enterprise, as depicted in Figure 18. In this example, the enterprise has installed the S8700 Media Server at one location on the campus and deployed Avaya G600 Media Gateways at other main buildings on the campus. These modules are networked over the campus LAN. An Avaya G600 Media Gateway could also be installed at a remote location that is not located on the campus. In this case, the remote gateway is connected over the enterprise WAN. The enterprise could also deploy the Avaya G700 Media Gateway with survivability at the remote location.

7. Roaming users can communicate with this system in two ways. The AvayaTM EC500 Extension to Cellular transparently bridges calls received at a user’s desktop phone to the user’s digital cellular phone. In addition, call bridging allows a person to continue an Avaya EC500 cellular call at their desk, seamless switching the call from the cell phone to the desktop set. The AvayaTM IP Softphone for Pocket PC provides access to the office telephone features, similar to the Avaya IP Softphone on a PC/laptop. The connectivity to the enterprise communications system is via the 802.11b wireless LAN. The Avaya PDA Softphone for Pocket PC supports PDA devices using Windows Pocket PC 2000 and 2002.

8. Small to Medium Enterprises Source: Avaya

9. A small to mid-sized enterprise with multiple locations can also take advantage of the networking capabilities that Avaya ECLIPS offers. The Avaya S8300 Media Server, in combination with Avaya G700 Media Gateways at remote locations, can serve up to 450 users. As shown in Figure 19, the Avaya S8300 Server at the main location is integrated with the Avaya G700 Media Gateway, which can provide access to the PSTN and support for digital or analog devices. The gateways at the remote locations would be connected to the S8300 Media Server over the enterprise WAN. Each of these remote Avaya G700 Gateways could be equipped with the Local Survivable Processor (LSP) processors. This would enable the remote system to continue to operate if the WAN were to fail or become extremely congested.

10. Simple VoIP Application Source: Adtran

11. Power over Ethernet Solutions Source: Adtran

12. VoIP Considerations

13. VoIP Migration: Before

14. VoIP Migration: After Source: Adtran

15. Analog Telephony Setup: Before Source: Adtran

16. Analog Telephony Setup: After Source: Adtran