Ascom Vowifi System Components; Vowifi Handset; Access Point (Ap); Controller - ASCOM VoWiFi System System Description

System Description
Ascom VoWiFi System
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Ascom VoWiFi System Components

The Ascom VoWiFi system is created using Ascom developed products, as well as third-party
products. This section gives a brief description of the components needed.
5.1

VoWiFi Handset

The VoWiFi Handset includes functionality such as wireless telephony, alarm and messaging.
The VoWiFi Handset functions are license dependant and are available in three versions:
Talker, Messenger, and Protector. The VoWiFi Handset is also upgradeable with additional
functions via a license.
In addition to ordinary telephony the VoWiFi Handset supports a push-to-talk (PTT)
function. The PTT function can be described as a group/conference call. A PTT session can be
triggered from the system by an alarm or by a user that sends an invitation to a PTT group
from the VoWiFi Handset.
Alarms activated from the VoWiFi Handset includes push-button alarm and emergency
alarm. The emergency alarm is triggered when a user calls an external or internal number
specified in the system as emergency number.
Messages can be received in and sent from the VoWiFi Handset. The VoWiFi Handset also
supports interactive messaging, which means that a user can communicate with external
sources such as a building management system, hospital system or a production process
system. Interactive messaging can be used for remote control of a machine, a door etc.
The VoWiFi Handset supports presence management
specify when and for how long the user is busy, on a meeting etc.
The configuration, installation and management of the VoWiFi Handset is easily done by
means of the Portable Device Manager (PDM).
The VoWiFi Handset can be charged in a desktop charger or a wall mounted charging rack. A
wall mounted battery pack charger can be used for charging the batteries alone.
The VoWiFi Handset supports the WLAN standards IEEE 802.11a/b/g/n, MCS 0–7.
5.2

Access Point (AP)

APs connect the VoWiFi Handsets to the wired network. The number of APs in a WLAN
installation depends on the size of the area to be covered. Each AP provides radio coverage
for a certain area called a micro-cell. To enable a user to move freely within the network it is
important that APs are placed so that the micro-cells overlap. Fast hand-over increases the
performance.
Note: APs are third-party products.
5.3

Controller

Depending on network size and infrastructure, Controllers can be used. The Controller
provides mobility, security, and RF services as an overlay on top of an existing LAN
infrastructure.
Note: Controllers are third-party products.
1. Requires some type of conference bridge in the system.
2. Requires a Presence Management System.
7 September 2011 / Ver. G
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, making it possible for the user to
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