Sony Ericsson Wireless Manager 4.0 User Manual page 94

If you have previously optimised TCPWindowSize, for example, as directed by a broadband Internet
service provider, then check whether that setting is global or specific to the network adapter over which
the broadband connection is made. It is preferable that all TCPWindowSize settings are specific to
the network adapter involved. This ensures that each individual connection is appropriately optimised.
In some cases it might be necessary to set TCPWindowSize globally. For information and a utility
on how to do this, go to the support section of www.sonyericsson.com.
86 Appendix A - Connection parameters