To analyze your problem can you provide log information from demo application and System.Diagnostics log file in your app.config descibed in thread http://www.inetlab.ru/support/viewtopic.php?t=519

as usual at
http://www.inetlab.ru/Products/ALT.SMS. ... x#download

What version do you use?

1) If you want to know how many parts will be send you have to use methods
PrepareSubmit and then SubmitAsync or Submit.

2) SubmitText method returns array of SubmitSmResp. The length of this array is a number of submited parts.

Hello,

Can you send me you code via Private Messages?

Please use evDeliverySm event and following code to get text message

string messageText = SmppClient.GetMessageText(data.UserDataPdu.ShortMessage, data.DataCoding);

SmppClientDemo has also example how to receive concatenated messages.

Please try DefaultFlashSMS coding with version 2.5.8.

When you get EnquireLink timeout it raises evDisconnect event.
Please download last version and check this.

Please try version 2.5.5.

Please try version 2.5.5.

SubmitMode used only in methods SubmitText, SubmitTextAsync and PrepareSubmit.
SubmitMode identifies the way how to send user data in the submit_sm PDU.

Please download version 2.5.5 and try again.
it should let you to send Unicode characters.

You can use methods client.SubmitText or client.SubmitTextAsync.

Which error did you get?

Do you use IPv6?

Could you try with another method?
public bool Connect(IPEndPoint endPoint)