My issue was solved

I don't know why, but SMSC has banned my IP-adress.

Thanks for all.

I tired to connect with both overloads of Connect method. Results are the same. I have 1 network card, and can ping destination server. I created handler for Error event, but there is no error and program don't rich this code. May be you can advise me any tools that will allow to monitor which messa...

Hello. I have problem with connecting to SMSC. Here is my source code: client.AddrNpi = 1; client.AddrTon = 1; client.SystemType = ""; client.Connect(<ip address>, <port>); I don't get any messages, just have client.Status == ConnectionStatus.Closed. I'm sure that all data is correct and that SMSC i...