Sms Forum is a web site setup by LogicaCMG to promote the use of SMPP (Short message peer-to-peer protocol) as a SMS (Short Messaging Service) protocol between SMSC (SMS Centre) and Content Provider’s Application (aka . Here, you can get the specification for SMPP (a TCP/IP protocol), MMAP (a HTTP XML-based protocol) to communicate with SMSC.

LogicaCMG has also released a Java based library for SMPP which is available at Source Forge.