how can I open a data call?

[burlizzi]

I have to establish a direct data callbetwen two phones, server part is in c++ for client i would use J2ME (for more compatibility). no problem for c++ but I have no idea on how to originate a data call in java.

maybe it is a stupid question, don't blame me, I searched the forum and the whole internet (almost whole..) and i found nothing but "problems in closing data call" and unanswered similar questions.

I tried platformRequest("modem:<num>") as described in RFC but i got just anoter exception.

please, help....
...please...