TD 92408EN
9 December 2011 / Ver. G
System Planning
Ascom VoWiFi System
41
Due to the different characteristics of the handsets a complementary site survey and quality
assessment must be done for the i62s, if the i75s and the i62s will be running on the same
band using the same Voice SSID.
This may lead to the need to change power levels of
APs, add more APs and/or change the
location of the APs placement.
If the i62s will run in the 5GHz band, the WLAN needs two SSIDs. In t
his case, the planning
process must be repeated for the deployment of the a/n radio.
There are several additional scenarios using different radios for the two types of handsets,
which wil
l require careful planning of APs placements and power levels. A site may have to
install more APs running a-radios than APs that are running g-radios.
Summary:
When migrating from i75 to i62 it is very important to do a ne
w site survey to assure the
best possible quality in the network. Since i62 is a completely new telephone with a new
WLAN driver the network settings may need to be changed to fit the i62.
A.6.7 Adding i62 VoWiFi Handsets in an Existing i75 VoW
i
Fi Handset Installation
If the i62 VoWiFi Handset will be used in parallel with
the i75 VoWiFi Handset, which forces
the use of the 2.4 GHz band, a voice quality walk and talk test should be performed. The test
must conclude that wherever an i75 VoWiFi Handset is functioning correctly, an i62 VoWiFi
Handset, wi
ll do the same.
In addition to the test of the WLAN environment, all other ser
vices installed at the customer
site must also be tested. Unite solutions must be carefully evaluated that they function with
both type of VoWiFi Handsets.
Also, the setup of the VoIP protocol in the IP-PBX mu
st be configured to support both the
i75 VoWiFi Handset and the i62 VoWiFi Handset.
