Use I75 Vowifi Handset To Verify The Vowifi System Deployment; Scan The Channels; Scan All Channels; Scan A Specific Channel - ASCOM i75 Configuration Manual

Configuration Manual
Ascom i75 VoWiFi Handset
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Use i75 VoWiFi Handset to Verify the VoWiFi System Deployment

We recommend doing site surveys with the built-in tools in the VoWiFi handset. This
provides a true measurement of the RF environment based upon the radio of the handset.
Other wireless analysers may be used to provide additional assistance during a site survey.
It is recommended to use i75 VoWiFi handset v 1.2 for site surveys. Release v 1.1 has a
limited site survey that only shows the strongest AP for each ESSID.
9.1

Scan the Channels

To be able to use the site survey functions in the VoWiFi Handset it must be configured
correctly.
Default configuration for the handset is to use channels 1, 6 and 11. If the handset is
intended for site survey use, scanning all channels will be limited to 1, 6 and 11. The result
is stored in the handset in a table with max. 16 entries. The table is upgraded regularly,
starting with scanning channel 1, then 6 and last 11. In between the handset is in sleeping
mode. The handset consults this table when making roaming decisions.
To enable scanning of all channels the parameter "802.11b/g channels" should be set to
"All". It is strongly recommended to set back the handset to "1,6,11" when in normal
use.
The World mode regulatory domain will also affect which channels that may be used. To
scan channels 1-11 it is recommended that the handset is configured so the "World mode
regulatory domain" parameter is set to "USA". If also scanning of channels 12 and 13 is
of interest use value "ETSI".
There are three ways of scanning channels:

• Scan all channels

• Scan a specific channel

• Scan for unknown systems
9.1.1 Scan all Channels
This gives a list of the channels in the ESSID found during the scan.
1 Press "*#77#" on the handset to access the site survey menu.
2 Select "Scan all channels".
3 Select the ESSID to display its associated APs.
4 Select an AP to display information such as ESSID, MAC address or QoS.
9.1.2 Scan a Specific Channel
This gives a list of all the APs found on that channel in the specified ESSID.
1 Press "*#77#" on the handset to access the site survey menu.
2 Enter the channel number to scan.
3 Select an AP to display information such as ESSID, MAC address or QoS.
2008-11-20/ Ver. B
TD 92431GB
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