My SMPP client received a message with user data coded as following (UDHI is set):
050D 0A03 200C 0439 332B 3131
I see that
05 is udh length
0D - information element identifier for predefined animation
But why is the next octet 0A??
Information element identifier must be followed by information element data length (IEDL), as I know from specs.
If 0A is IEDL why is it more then UDH length? Or it's not IEDL? If so what else information elements have no IEDL and how to know their length?
I need this information so that I could correctly decode UDH. In fact I want just to skip such information elements, but without knowing their length I couldn't do it correctly.