ISU AT Command Reference

ISU AT Command ReferenceIntroduction1 Introduction1.1 ScopeThis document is intended as a reference guide to the usage of the AT command set for the Iridium TM/SM subscriberunit. This document only applies to the Motorola satellite series.The intended audience for this document are the field test engineers, product and intelligent peripheraldevelopers.1.2 Reference[1] ITU-T Recommendation V.25ter, 08/95.[2] ETS 300 642: Digital Cellular Telecommunications System (Phase 2); AT Command Set for GSMMobile Equipment (GSM 07.07).[3] ETS 300 585: Digital Cellular Telecommunications System (Phase 2); Use of DTE-DCE InterfaceSMS and CBS (GSM 07.05)[4] ITU-T Recommendation V.24, 03/93.1.3 Terms /and AbbreviationsAsynchronousA serial data transmission method that uses Start and Stop bits to synchronize reception.AT CommandsA group of commands that can be sent by a terminal or host computer to control the ISU in Commandmode.BaudOne signalling element per second. This is a measure of the signalling rate on the telephone line. Itshould not be confused with Bits Per Second (bps) which can differ from the Baud rate.BCDBinary Coded DecimalBit Mapped RegistersBit mapping is a technique that allows a single S-Register to hold up to 8 binary variables e.g.:Reg Type Val Default FunctionS14 Bit Mapped 170 Register S14 is a bit-mapped registerand provides the following functions:Bit 0 ReservedBit 1 Echo commands to DTEBit 2 ResponsesBit 3 Word or number responsesBit 4 ReservedBit 5 Dialing methodBit 6 ReservedBit 7 Answer/Originate operationVersion 2.6March 30, 2006 1