SpectraLink 72-1084-02 manual System Components

2.3System Components

•NetLink e340 Wireless Telephone – The NetLink e340 Wireless Telephone is a lightweight, durable handset specifically designed for mobile workplace use within a facility using the supported Mitel Networks IP telephony system and 802.11b APs in a wireless LAN.

•NetLink i640 Wireless Telephone – The NetLink i640 Wireless Telephone offers a durable design with push-to-talk functionality.

Wireless Telephone functionality is provided by emulating the Mitel Networks 5220 IP Telephone. Among other features, the Wireless Telephone can receive calls directly, receive transferred calls, transfer calls to other extensions, and make outside and long distance calls (subject to the restrictions applied in your facility.) The Wireless Telephones are to be used on-premises; they are not cellular or satellite phones.

NetLink e340/i640 Wireless Telephones use Direct Sequence Spread Spectrum radio technology (DSSS) to transmit audio packets over wireless LAN APs that support SpectraLink Voice Priority (SVP).

•NetLink SVP Server – SpectraLink Voice Priority (SVP) is the SpectraLink quality of service (QoS) mechanism that is implemented in the Wireless Telephone and AP to enhance voice quality over the wireless network. SVP gives preference to voice packets over data packets on the wireless medium, increasing the probability that all voice packets are transmitted efficiently and with minimum or no delay. SVP is fully compatible with the IEEE 802.11b standards.

The NetLink SVP Server is an Ethernet LAN appliance that works with the AP to provide QoS on the wireless LAN. All MiNET packets to and from the SpectraLink e340/i640 Wireless Telephones pass through the NetLink SVP Server and are encapsulated for prioritization as they are routed to and from the supported Mitel Networks VoIP solution or other Wireless Telephone.

SVP is required for QoS because the current IEEE 802.11b wireless LAN standard provides no mechanism for differentiating audio packets from data packets. This standard is undergoing revision to version 802.11e to provide all the functionality of SVP in an industry standard, thus ensuring high-quality voice in a mixed client environment. Once 802.11e is ratified, SpectraLink and its 802.11b technology partners will adopt the new specification.

•Mitel Networks IP System - Mitel Networks 3300 ICP/SX-200 ICP VoIP solution.

•Access Points – supplied by third party vendors, access points provide the connection between the wired Ethernet LAN and the wireless (802.11b) LAN. Access points must be positioned in all areas where Wireless Telephones will be used. The number and placement of access points will affect the coverage area and capacity of the wireless system. Typically, the requirements for use of SpectraLink e340/i640 Wireless Telephones are similar to that of wireless data devices.