Specifications

ISU AT Command Reference Table of Contents
Iridium Proprietary Version 2.45
20 June 2011 v
Table of Contents
1 Introduction .................................................................................................................... 1
1.1 Scope .................................................................................................................................................................. 1
1.2 Reference ............................................................................................................................................................ 1
1.3 Terms /and Abbreviations .................................................................................................................................. 1
2 Modem Overview ........................................................................................................... 5
2.1 DTE-ISU Interchange Circuits ........................................................................................................................... 5
2.2 9-Wire and 3-Wire Operation ............................................................................................................................. 5
2.3 Configuration Settings ........................................................................................................................................ 5
2.4 Mode of Operation ............................................................................................................................................. 5
2.5 Hardware Failure Reporting ............................................................................................................................... 6
2.6 Ring Indicate Signal ........................................................................................................................................... 6
3 Command Overview ...................................................................................................... 7
3.1 Command Types ................................................................................................................................................. 7
3.2 Basic Commands ................................................................................................................................................ 7
3.3 Extended Commands .......................................................................................................................................... 7
3.4 Command and Response Characters .................................................................................................................. 8
3.5 Command Entry ................................................................................................................................................. 9
3.6 Command Responses........................................................................................................................................ 10
4 Phased Implementation by Software Release ........................................................... 11
5 Phase I AT Commands ................................................................................................ 16
5.1 AT - ATtention Code........................................................................................................................................ 16
5.2 A/ - Repeat Last Command .............................................................................................................................. 16
5.3 +++ - Escape Sequence .................................................................................................................................... 16
5.4 A - Answer (Initial implementation; revised in Phase III) ............................................................................... 16
5.5 Bn - Communication Standards ........................................................................................................................ 16
5.6 Cn - Carrier Control.......................................................................................................................................... 16
5.7 D - Dial (Initial implementation; revised in Phase III) ..................................................................................... 17
5.7.1 Direct Dial From Phonebook (Initial implementation; revised in Phase III) ..................................... 17
5.8 En - Echo .......................................................................................................................................................... 18
5.9 Fn - Line Modulation........................................................................................................................................ 18
5.10 Hn - Hangup (Initial implementation; revised in Phase III) ............................................................................. 18
5.11 In – Identification (Initial implemenation; revised in Phase VI) ...................................................................... 18
5.12 Ln - Loudspeaker Volume ................................................................................................................................ 18
5.13 Mn - Speaker Control ....................................................................................................................................... 18
5.14 Nn - Automode Enable ..................................................................................................................................... 19
5.15 On - Online ....................................................................................................................................................... 19
5.16 P - Pulse Dial .................................................................................................................................................... 19
5.17 Qn - Quiet Mode ............................................................................................................................................... 19