Installation guide

TD 92408EN
9 December 2011 / Ver. G
System Planning
Ascom VoWiFi System
31
10.7 Recommended Settings
10.7.1 Basic Configuration
b/g/n
Item Recommended
Settings
Description
Radio 802.11g With a g only network the stations do not need
to use pr
otection against b o
nly stations. The
transmission rate will be up to 54 Mbps.
802.11b/g Mixed mode where b only and g stations coexist
will
affect the g stations to use protection and
the throughput will be decreased.
Transmitting power Set to match desired
cell s
ize.
The default setting for the VoWiFi Handset is
Auto power. Auto power settings for the APs
should be used to ensure a symmetric link.
If the output power is manually set in the AP,
make sure the A
Ps and cli
ents are configured to
use the same output power to avoid
asymmetric communication link budgets. Refer
to 10.6 Transmission Power on pag
e 30.
Ra
dio channel 1, 6, 11 Do not configure a channel for use that is
four
or less channels from other channels within the
RF range. Doing so will lower the throughput of
the WLAN for the stations within those
channels.
Regulatory domain
(802.1
1d)
En
abled
Radio preamble Short Long preamble will work but will decrease
overall throughp
ut when using b data rates
Beacon period 100 ms Higher value will increase battery life and
decreas
e throughput. Lower value will decrease
battery life and increase throughput.
DTIM interval 5 DTIM setting is related to the beacon interval.
The value of 5 is recommende
d when the
beacon interval is 100ms.
Antenna diversity Enable Disabled antenna diversity may introduce RF
shadows at certain spots.
Short slot time En
able This feature will increase the throughput if no
b
stations are associated at the AP.
a/n
Item Recommended
Settings
Description
Radio 802.11a The transmission rate will be up to 65 Mbps.