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SpectraLink Wireless Telephone Overview
PN: 1725-36038-001_B.doc 13
System Components
SpectraLink 8020/8030 Wireless Telephone
The SpectraLink 8020/8030 Wireless Telephone is a lightweight,
durable handset specifically designed for mobile workplace use
within a facility using SIP and an 802.11 wireless LAN. The handsets
are to be used on-premises; they are not cellular or satellite phones.
SpectraLink 8020/8030 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 8000 SVP Server
SVP is the SpectraLink quality of service (QoS) mechanism that is
implemented in the 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 standard.
The SpectraLink 8000 SVP Server is an Ethernet LAN appliance that
works with the AP to provide QoS on the wireless LAN. All SIP
packets to and from the SpectraLink 8020/8030 Wireless Telephones
pass through the SpectraLink 8000 SVP Server and are encapsulated
for prioritization as they are routed to and from other SIP devices.
Access points
Supplied by third-party vendors, APs provide the connection
between the wired Ethernet LAN and the wireless (802.11) LAN.
Access points must be positioned in all areas where handsets will be
used. The number and placement of APs will affect the coverage area
and capacity of the wireless system. Typically, the requirements for
use of SpectraLink 8020/8030 Wireless Telephones are similar to that
of wireless data devices.
Access points must utilize SpectraLink Voice Priority (SVP). See the
Polycom WLAN Compatibility Table for information about APs that
support SVP.