Table of Contents

Common Mistakes

Incoming messages not received

Possible reasons why you don't receive incoming messages

  • SMPP account doesn't have right to receive SMS messages.
  • Wrong SMS routing configuration on SMPP server.
  • SMPP client has been bound as Transmitter.
  • SMPP client was not attached to evDeliverSm event handler.
  • SMPP account is used in two or more applications. SMSC sends messages to application where DeliverSm is not expected.

Wrong message text encoding

Please clarify with SMPP provider which encoding (character set) is expected for DataCodings value.

Read more about encoding on page "Mapping DataCodings to .NET Encoding".

Message concatenation does not work

Please ask your SMPP provider which type of concatenation is supported.

Read more about contatenation on page "Concatenation".

Library version was changed

If you observe plenty of syntax errors or command syntax changes, probably you are using outdated library version. Otherwise you might have library updated but using older version codebase.

Read more on page "Migration from v1.x to 2.x".