Large Enterprise with Multiple Locations
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Transcript of Large Enterprise with Multiple Locations
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Large Enterprise with Multiple Locations
Source: Avaya
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• 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.
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• 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.
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Mid-to-Large Enterprises
Source: Avaya
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• 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.
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• 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.
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Small to Medium Enterprises
Source: Avaya
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• 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.
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Simple VoIP Application
Source: Adtran
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Power over Ethernet Solutions
Source: Adtran
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VoIP Considerations
Switches Routers Switch/RoutersNetVanta 3000NetVanta 4000NetVanta 5000
Layer 2802.1Q VLAN Tag/Trunk 802.1p Ethernet PriorityWeighted Round Robin QueingStrict Priority Queuing
Layer 3Inter-VLAN RoutingDiffServ Awareness Weighted Fair Queuing (WFQ) Low Latency Queuing (LLQ) Frame Relay Fragmentation
SecurityVLAN Segmentation SIP/H.323 ALGs DiffServ Preservation in IPSec
NetVanta 1224NetVanta 1224ST
NetVanta 1224RNetVanta 1224STR
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VoIP Migration: Before
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VoIP Migration: After
Source: Adtran
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Analog Telephony Setup: Before
Source: Adtran
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Analog Telephony Setup: After
Source: Adtran
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