CSD Specific Parameters
Required | Useful information |
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Preferred | Select your preferred network connection speed from the drop down list |
Connection | provided: |
Speed (bits/s) | 9600 or14400. |
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Connection | Select the method you want to use to connect to the network from the |
Mode | options provided: |
| analogue, ISDN V.110 or ISDN V.120 |
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Compression | Use to speed up data transfer. You can select to Enable Data |
| Compression and Header Compression. |
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Callback | Enter the number the callback should be made to. You can only use |
Number | Callback if you are connecting to a source that gives permission for |
| callbacks to be made, for example your company server. |
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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. They may be viewed and, if necessary, changed in the properties of the Sony Ericsson Wireless WAN network adaptor.
Select Start 
Settings 
Network and
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 adaptor to be restarted. It is recommended that the laptop is rebooted.
104 | Appendix A - Connection Parameters |