The SMS Server Tools send and receive short messages through GSM modems or mobile phones. Messages are stored as text files in spool directories. External programs or scripts of any language can be used to filter, inspect, and answer messages automatically. Events and alarms can be passed to scripts for integration in monitoring tools. The program generates performance statistics as well. This daemon supports 7, 8, and 16 bit character sets as well as binary data (ringtones, logos, wap-push), user data header, flash, and delivery reports.
The SMS Server Tools 3 is a SMS gateway that can send and receive short messages through GSM modems and mobile phones. Messages are sent by simply storing text files into a special spool directory. It also stores received messages into another directory as text files. Binary messages including Unicode text and ring tones are also supported, and it is possible to send WAP Push and system messages. The program can run scripts after events like the reception of a message, successful sending, and when the program detects a problem.