This log from your demo client:
17:10:53: INFO : 1: (SmppClientDemo) SmppClient connected
17:10:53: INFO : 1: (SmppClientDemo) Binding SmppClient for SystemId: *****
17:10:53: DEBUG: 17: (SmppClient) PDU has been sent: BindTransceiver, Length: 49, Status: ESME_ROK, Sequence: 3
17:10:53: TRACE: 17 ...

Hello!

We are use your Dll and getting errors:

System.IndexOutOfRangeException occurred
HResult=-2146233080
Message=Index was outside the bounds of the array.
Source=Inetlab.SMPP
StackTrace:
at utdy1bh0bC9HjfEulK.cXyIKp5yVi0vuDJZ6B.PZjXqv0afC(Int32& )
InnerException:

Call stack из студии ...