orgTon=0
orgNpi=0
destination=3333
desTon=1
desNpi=1
msisdn=123456789
msgBody ...

please help me, i faced some problem. My code sample is here

private ALT.SMS.SmppClient Altsmpp = new ALT.SMS.SmppClient();
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Altsmpp.SubmitText(SubmitMode.Payload, orgTon, orgNpi, destination, desTon, desNpi, msisdn, DataCodings.Default, msgBody); // this line shows the problem ...