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26 Overview
Employees carry wireless handsets to make and receive calls as they move
throughout the building. The handsets are used only on the premises; they
are not cellular phones. The handsets communicate with the CS 1000 and
with the WLAN IP Telephony Manager 2245. Just like wired telephones, the
wireless handsets receive calls directly, receive transferred calls, transfer
calls to other extensions, and make outside and long-distance calls (subject
to corporate restrictions).
The handsets interoperate with other IP Line and IP Trunk features and
devices, such as IP Peer, and the IP Phone 20xx and IP Softphone 2050
series of IP Phones, with the exception of some media-related constraints
described in "Codecs" (page 79).
The frequencies that are allocated are governed by IEEE guidelines for
WLANs and are part of the free spectrum. The WLAN Handset 6120/6140
uses a, b, and g frequencies, and the WLAN Handset 2210/2211/2212
uses the b frequency.
The handsets work only in a Nortel Succession 3.0 (and later) environment
coordinated with a Communication Server (CS) 1000 or Business
Communications Server (BCM). These handsets communicate with the
Nortel call server through the Unified Network IP Stimulus (UNIStim)
protocol. The media path of the voice call goes from the handset directly to
the destination device (through the WLAN Telephony Manager 2245). In
addition, the handset encapsulates all traffic in the SpectraLink Voice Priority
(SVP) protocol. The WLAN Telephony Manager 2245 deencapsulates the
VoIP traffic from SVP and passes it onto the network—it does not translate
between UNIStim and SVP. Therefore, the Telephony Manager 2245 is in
the path of all communication to and from the handset. Likewise, signaling
goes from the handset to the Telephony Manager 2245 to the call server.
The WLAN Handset 2211 and the WLAN Handset 6140 are the most
durable and they are the only handsets that support Push-to-talk (PTT).
For more information about the handsets, see the following publications:
•
WLAN Handset 2210 User Guide (NN10300-077)
•
WLAN Handset 2211 User Guide (NN10300-078)
•
WLAN Handset 2212 User Guide (NN10300-071)
•
WLAN Handset 6120 User Guide (NN43150-100)
•
WLAN Handsets Fundamentals (NN43001-505)
Components
The WLAN Handset Series 2200 offers the following components for local
configuration:
•
Nortel WLAN Handset 2200 Series Configuration Cradle
Software—software only
Nortel Communication Server 1000
WLAN IP Telephony Installation and Commissioning
NN43001-504 01.02 Standard
Release 5.0 15 June 2007
Copyright © 2004-2007, Nortel Networks
.