Specifications

ISU AT Command Reference Command Overview
Iridium Proprietary Version 2.45
20 June 2011 8
Extended Cellular Commands
 +C prefix
 Used for GSM cellular phone-like functions
 Standards: ETSI specifications GSM 07.07 (reference [2]) and GSM 07.05 (reference [3])
Extended Data Compression Commands
 +D prefix
 Used for data compression
 Standard: V.25ter (reference [1])
Extended Generic Commands
 +G prefix
 Used for generic DCE issues such as identities and capabilities
 Standard: V.25ter (reference [1])
Extended Interface Control Commands
 +I prefix
 Used to control the DTE interface
 Standard: V.25ter (reference [1])
Extended Short Burst Data Commands
 +S prefix
 Used for Short Burst Data messaging
Motorola Satellite Product Proprietary Commands
 -MS prefix
 Proprietary to the Motorola Satellite Series product line
3.4 Command and Response Characters
The execution of a command string follows a left-to-right execution of each command followed by the
reporting of a result code for the entire string.
The ASCII character set (CCITT T.50 International Alphabet 5, American Standard Code for Information
Interchange) is used for the issuance of commands and responses. Only the low-order 7 bits of each
character are used for commands or parameters; the high-order bit is ignored. Upper case characters are
equivalent to lower case characters.