Could not establish connection to network

Hi,
I developed a solution in a pocket pc who connect to web service via gprs connection.
I'm used the ras api of hhp.connection.
the problem is: when I calls the function dial of the ras api, it return true, but, when i call the web service it return this message:"Could not establish connection to network"

can you help me?

best regards

Hi,

This is a French-speaking forum, no posts in English please...

Regards

EDIT: eh, mais tu postes en français d'habitude ! ;)