AASTRA SIP-DECT (Release 2.1)- OM System Manual - Installation, Administration and Maintenance EN - Manual (Page 156)

SIP – DECT OM System Manual Release 2.1 7 Configuration und Administration Aspects
depl-1230/1.3 Page: 156 (196)
The access point can be assigned to a VLAN that conforms to 802.1q. All the data that is
received from and that is to be forwarded to the WLAN clients is then carried by the
configured VLAN. All other data, such as VoIP packets, configuration data or authentication
data (Radius), is given the VLAN tag configured for the RFP. The switch port of the network
component to which the access point is connected must be configured as a trunk port.
Note: The RFP 42/L42 must be connected via an 100BaseT Ethernet link in order to
activate the RFP’s WLAN function.
7.13.2 Optimizing the WLAN
Beacon Interval
Transmitting beacons requires transmission channel capacity. A shorted beacon interval
increases the WLAN network's ability to detect signals, thus improving its availability. At the
same time, it increases the network's ability to adjust the mutually negotiated signal strength.
A longer beacon interval saves WLAN air time and also reduces the power consumption of
mobile WLAN clients.
RTS Threshold
If the network throughput is low or if many retransmissions occur, the RTS/CTS handshake
can be activated by reducing the RTS threshold value below 1500 byte. This can improve
throughput, especially in environments where reflection and attenuation cause problems for
HF.
Fragmentation Threshold
In environments where there is lot of interference and poor radio quality, reducing the
fragment size below 1500 bytes can improve the effective throughput. However, transmitted
data frames have to be fragmented, which means a higher load on the RFP’s processor.
DTIM Period
The DTIM period specifies the interval between transmissions of the broadcast and multicast
packets. All WLAN clients must be active during this interval. Increasing the DTIM period