Spectralink SpectraLink IP Phone 72-1084-02 Manual Do Utilizador

PN: 72-1084-02-B.doc 

Page 8 

••••    

 – 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.  

••••    

 – 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). 

• 

 – 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 3300 ICP

/SX-200 ICP VoIP solution. 

• 

 – 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.