System Components - Avaya 3641 Installation, Configuration And Administration

Part B: Avaya 3641/3645 Wireless IP Telephone
1.4

System Components

Avaya 3641/3645 Wireless IP Telephone
The Avaya 3641 Wireless IP Telephone is a lightweight, durable handset specifically
designed for mobile workplace use. The Avaya 3645 Wireless IP Telephone has the same
features and function, but in a more durable design and includes push-to-talk or
emergency call capability.
Handset telephony features are provided by emulating the Avaya 4612 IP Telephone. Like
a wired desk phone, the handset can receive calls directly, receive transferred calls,
transfer calls to other extensions, and make outside and long distance calls. The Wireless
IP Telephones can only be used on-premises within the WLAN coverage area.
AVPP Server (used with SpectraLink Voice Priority QoS method)
As described in Section 1.1, the AVPP Server is a wired LAN device that is required when
using SpectraLink Voice Priority for QoS.
Wi-Fi Access Points (APs)
Enterprise-grade Wi-Fi access points provide the connection between the wired LAN and
the wireless client device. 802.11a/b/g/n APs must be positioned in all areas where
Wireless IP Telephones will be used to ensure seamless radio coverage. The number, type
and placement of access points will affect the coverage area and capacity of the wireless
system. Careful planning of the WLAN is necessary to ensure good voice quality. See the
Best Practices Guide for Deploying SpectraLink 8020/8030 Wireless Telephones for
additional guidance.
Access points may use SpectraLink Voice Priority (SVP) in conjunction with an AVPP
Server, CCXv4 (Cisco APs only) or Wi-Fi Standard QoS (including WMM, WMM Power Save
and WMM Admission Control). APs must be properly configured to support the
corresponding QoS and security methods selected for the handset.
 Normally all APs in a given facility use the same 802.11 band. However,
facility expansion, technology upgrades and other situations can result in
different bands being used. Band roaming between 802.11a and 802.11b
bands is possible if enabled in the Admin menu. See section 4.1 The Admin
Menu for more information.
Ethernet Switch
One or more Ethernet switches interconnect multiple wired devices, including the AVPP
Server (if used for QoS), the Avaya IP telephony system, Avaya IP phones, TFTP Server,
RADIUS authentication server and WLAN access points. Enterprise Ethernet switches
provide the highest performance networks, which can handle combined voice and data
traffic, and are required when using the Wireless IP Telephones.
Although a single Ethernet switch network is recommended, the Wireless IP Telephones
and the AVPP Server can operate in larger, more complex networks, including networks
with multiple Ethernet switches, routers, VLANs, and/or multiple subnets, as long as the
AVPP Server and handsets are on the same subnet. However, in such networks, it is
possible for the quality of service (QoS) features of the AVPP Server to be compromised,
and consequently voice quality may suffer. Any network that consists of more than a single
Ethernet switch should be thoroughly tested to ensure any quality issues are addressed.
See the Best Practices Guide for Deploying SpectraLink 8020/8030 Wireless Telephones
for additional guidance.
40 Avaya Voice Priority Processor, Avaya 3641/3645 Wireless IP Telephone, Handset Administration Tool