Avaya Voice Priority Processor
Installation
2. Avaya Voice Priority Processor Overview
Avaya Voice Priority Processor utilizes Spectralink Voice Priority (SVP) as the 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 delay.
SVP is fully compliant with the IEEE 802.11 and 802.11b standards.
The Avaya Voice Priority Processor is an Ethernet LAN device that works with the AP to provide QoS
on the wireless LAN. All voice packets to and from the NetLink Wireless Telephones are intercepted
by the Avaya Voice Priority Processor and encapsulated for prioritization as they are routed to and
from the an IP server or gateway.
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 802.11
technology partners will adopt the new specification. When the 802.11e specification replaces SVP,
the Wireless Telephones can be upgraded and the Avaya Voice Priority Processor can be removed
from the system.
2.1 Avaya Voice Priority Processor Capacity
The Avaya Voice Priority Processor requires a CAT 5 cable connection between its Network port and
the Ethernet switch. The Avaya Voice Priority Processor auto-negotiates to the type of port on the
Ethernet switch and supports 10Base-T, 100Base-T, Full Duplex and Half Duplex port types. The
maximum number of calls the Avaya Voice Priority Processor is able to handle depends on LAN
factors per the following table:
10Base-T
100Base-T
IP Gateway
10
80
NetLink Telephony Gateway
10
120
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555-301-102, Issue 2
July
2003