Text messages with UDH, bad DCS

I tried to send text messages with UDH with emi2 driver. This feature
appears as y? (driver probably has this feature, has not been tested). I
would like generate TP-DCS = 00h (it's good also 11h or 12h), I need 7 bit
coding in DCS

I use these parameters:

        UDHI = 1;
        MClass = 2; // this should be for 12h; or MClass = '1' for 11h; or
MClass = '' for 00h
        Coding = 1;
        MWI = '';
        DLRmask = 0;
        PID = 0;
        AltDCS = 0;

Note: UDH is 8bit encoded, Body is 7 bit encoded!

But i get DCS = 14h, that's 8 bit coding, not 7 bit!

kannel userguide says: "If unset, defaults to 7 bits unless a udh is
defined, which sets coding to 8bits."

Is this a bug in emi2 kannel driver or doesn't emi2 support text messages
with UDH ?

Please reply, this bug should interest a lot of developers!