SMS raw pdu in Android

Question

Hello,

1) Is there any way that I can send a raw SMS PDU from an Android device?

Or,

2) are there any classes available that can give me access to the PDU headers (for example TP-DCS) so that I can construct the PDU as I like?

I have searched the net and found: http://www.androidjavadoc.com/1.0_r1_src/com/android/internal/telephony/gsm/ISms.html but the above classes are private and as such are not available to me(haven't actually understood why).

Is what I'm asking possible in any way or not? If not then why can't I have that kind of functionallity?

Thanx