Short Burst Data (SBD)

Iridium Short Burst Data (SBD) is a simple and efficient network transport capability for transmitting short data messages between equipment and centralized host computer systems. It is integrated by Iridium’s Value-added Resellers into vertical market applications in industries such as Oil and Gas, Rail, Maritime, Aeronautical, Utilities and Government/Military. Message size for MO-SBD is between 1 and 1960 bytes (0 byte messages are referred to as "mailbox checks"). Message size for MT-SBD is between 1 and 1890 bytes. The maximum message size depends on whether an Iridium 9601 or 9522B transceiver is used. The 9601 has shorter message lengths, but the hardware is lower in cost and supports up to 340 bytes MO-SBD and 270 bytes MT-SBD.

Melrose Labs Iridium Satellite
Melrose Labs Compression