If you are looking for short description of the software which you can find on this site, please, visit the Introduction page (use a shortcut to Java SMPP Library, SMSC Simulator and Java Test Application description.)

The SMPP Open Source documentation

All Javadoc documentation is available online. Since version 1.2 the Javadoc documentation is available as tar-ed gzipped package as well, so you can download it and use localy from your computer.

• The Javadoc for the Java SMPP library version 1.3 (latest) (tar.gz), 1.2 (tar.gz), 1.1, 1.0.
• The Javadoc for the SMSC Simulator version 1.1 (latest). (tar.gz), 1.0.
• The Javadoc for the Test Application version 1.1 (latest) (tar.gz).
  There is no Javadoc for the previous version of the test application.

The protocol specifications

• The version 3.3 of the SMPP Protocol Specification can be downloaded from our site.
  
• SMPP Protocol Specification v3.4 Issue 1.2 can be downloaded from SMS Forum's documentation page.