Firewall; Wlan Handset 2210/2211/2212 And Avaya 6120/6140 Wlan Handset - Avaya Communication Server 1000 Installation And Commissioning Manual

Firewall

The firewall is an optional element that is often used to separate the wireless and wired
domains.
WLAN Handset 2210/2211/2212 and Avaya 6120/6140 WLAN
Handset
The WLAN Handset 2210/2211/2212 and Avaya WLAN Handset 6120/6140 uses Voice over
IP (VoIP) technology on IEEE 802.11-compliant Wireless Local Area Networks (WLANs).
Access points (AP) use radio frequencies to transmit signals to and from the wireless handsets.
Important:
In this document, handsets means the WLAN Handset 2210/2211/2212 and Avaya WLAN
Handset 6120/6140. Where the feature refers only to a specific handset, the full handset
name is used.
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 Avaya 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 Avaya 2050 IP Softphone series of IP Phones, with the
exception of some media-related constraints described in
The frequencies that are allocated are governed by IEEE guidelines for WLANs and are part
of the free spectrum. The Avaya 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 Succession 3.0 (and later) environment coordinated with a CS
1000 or Avaya Business Communications Manager (Avaya BCM) Server. These handsets
communicate with the Avaya 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.
Avaya WLAN IP Telephony Installation and Commissioning
Codecs on page 87.
November 2010
Firewall
21