Empowered by Innovation - NEC UX5000

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Issue 2.0 UX5000 PVAU NAT Traversal Section 4 Considerations for Choosing a NAT Router When choosing a NAT router for inter-working with UX5000 voice over IP implementations, the following features are required on the router: The NAT Router must support port forwarding the internet protocol. Typically, NAT router manufacturers specify this feature as “port forwarding” or “Port Trigger” o Note: Make sure the router supports protocol (TCP or UDP) based port forwarding. The Local Interface to which the VoIP terminal and/or software terminal connects must meet 802.3 ethernet standards – preferably 100Mbps ethernet ports on intranet/LAN side. A NAT router which is optimized for real-time data traffic is preferred. These are typically identified as supporting internet games or other real-time high traffic applications. 4.1 Considerations for Voice Quality When Using NAT When using a NAT router, especially the ones that are readily available for home or small office usage, the following must be considered with respect to voice quality. • Not all NAT routers are same. Depending on the quality of the router functions, the quality of NAT router varies with respect to its ability to handle large quantities of data within a short span of time – typically known as throughput, or the ability to block/unblock voice or SIP traffic. • Depending on the capability of a NAT router used in a home office environment, it may support one or sometimes more than one IP terminal. • Peer-to-Peer integration will not be supported by NAT-enabled UX5000 IP terminals. All voice traffic will travel through the network location where the UX5000 with SIP Station application is located. • Packet loss of 1% or less is recommended with the maximum of 3% from end to end. • Bandwidth will vary depending on the media, payload and audio algorithms utilized. 8
UX5000 PVAU NAT Traversal Issue 2.0 Section 5 Installation When purchased, the Packet Voiced Application blade [PVAU blade] will support multiple applications. Users can load specific compact flash solutions such as the PVAU NAT application. 1. The PVAU blade with PVAU NAT application can be installed in the chassis in any available slot, it does not require UX5000 blade type configuration. Upon a successful initialization, the far right LED will flash green. This process may take up to 3 minutes. 9
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Empowered by Innovation - NEC UX5000

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