Appendix A - Connection parameters
85
CSD-specific parameters
TCP/IP optimisation
To take full advantage of the high bandwidth of the PC Card, the TCP/IP window size parameter
TCPWindowSize should be changed from the default Windows setting of 16k for Windows 2000,
or 64k for Windows XP. Sony Ericsson recommends a TCP/IP packet size of 43200 for optimum
performance with the PC Card. An MTU size of 1450 is also considered optimal for EDGE networks.
These settings are made automatically when the Wireless Manager is installed. You can display and,
if necessary, change the properties of the Sony Ericsson Wireless WAN network adapter.
To optimise the TCP/IP properties for your Sony Ericsson PC card
1. From the Windows desktop, select
Start
Settings
Network and Dial-up Connections
.
2. Locate the Sony Ericsson Wireless WAN adapter in the list, right-click on it and select
Properties
.
3. Click
Configure
on the Advanced tab. If directed by your network operator, you may change
the settings by selecting TCPWindowSize or MTU and changing the value. Changes to these
settings require the network adapter to be re-started by rebooting your computer.
Required
Useful information
Preferred
Connection Speed
(bits/s)
(Where selection is available) Select your preferred network connection speed from
the drop-down list provided. If in doubt, start at 9600.
Connection Mode
Select the method you want to use to connect to the network from the options provided:
analogue, ISDN V.110 or ISDN V.120
Compression
Use to speed up data transfer. You can select to
Enable Data Compression
and
Header Compression.
Callback Number
Enter the number the callback should be made to. You can only use Callback
if you are connecting to a source that gives permission for callbacks to be made,
for example your company server.
