InetLab

I have set my project up in C # and it works fine with sending sms, but I have problems with delivery reports - very few times I got feedback on the event: "DeliverSmEventHandler" - I try to send the same item again and again. but sometimes the callback disappears.

Can some help me?

My settings are as follows:

SourceAddrTon = 0;
SourceAddrNpi = 1;
DestAddrTon = 0;
DestAddrNpi = 1;
DataCoding = DataCodings.Default;
RegisteredDelivery = 1;

I'm using version: 1.1.20.0

Hello marcus,

Do you mean that DeliverSm event handler sometimes has not been invoked?

It think at first you need to be sure that server sends all DeliverSm PDU to you.
Try to analyze SMPP traffic between client and server.
http://wiki.inetlab.com/doku.php/smpp/tracing

Another question. Do you use your SMPP account only in one application? It can be that another application receives a delivery receipt, where you are not expecting.