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SpectraLink Corporation Setup and Administration—NetLink e340/i640 Wireless Telephone
Mitel Networks ICP and 5220 IP Phone emulation
PN: 72-1084-02-B.doc Page 8
2.3 System Components
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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.
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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.
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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.