Oh and just to mention the MessageComposer class doesn't have any events like you mention. I can see them in your example here http://wiki.inetlab.com/doku.php/smpp/messagecomposer however Inetlab.SMPP.dll version 1.1.11.2 doesn't have them?

Thanks for the response. This is what I suspected however the evDeliverSm only fires once for a multi-part message and composer.IsLastSegment never evaluates as true...

I'm having a little trouble processing concatenated messages received from my SMS aggregator and I'm wondering if anyone can help. From looking at the demo code and the example found here http://wiki.inetlab.com/doku.php/smpp/client_getting_started it should be as simple as adding each message part ...

Never mind. Think I have solved the issue.

I'm wondering if anyone could help me find the cause of this occasional error we get when using the library in a vb.net project. I haven't managed to replicate this in testing but occasionally when we send a large amount of message we get a null pdu exception. Here is a simplified version of the cod...