SMSGW: mail-sms gateway

Techbase NPE is a device that comes with 180MHz 32-bit ARM processor, 64 MB of RAM, 4MB of writable FLASH memory, SD card reader and Sim600 GSM EDGE modem. Device is handled by Linux 2.6.20 with BusyBox tools, there is JamVM – embedded Java Virtual Machine more or less compatible with Sun JVM 1.4.

Device was chosen to be a part or IT infrastructure monitoring. All alerts are sent to device via SMTP mail protocol and then delivered as a SMS.

Software used for assembling of application:

• SMSLib
  
• RXTX
• Java Email Server
  
• dnsjava
  
• backport of java.util.concurrent to Java 1.4
  
• Simple Logging Facade for Java

SMSGW with documentation is avaliable from systest.googlecode.com

To integrate SMSLib I had to port it from Java 1.5 to JamVM 1.4 (note that GNU Classpath doesn't support POSIX extensions to regular expressions), fix SLFJ startup checks and change usage of RXTX to direct way instead of reflection. RXTX used by me didn't have mappings for B115200 and B230400 and I had to look them up in termios.h (file is available in Linux kernel sources), found values should be used in port.setSerialPortParams().