SARA-R4/N4 series - AT Commands ManualUBX-17003787 - R09 9 Short Messages ServicePage 66 of 3079 Short Messages Service9.1 IntroductionFor a complete overview of SMS, see 3GPP TS 23.040 [8] and 3GPP TS 27.005 [16].In case of errors all the SMS related AT commands return an error result code as defined in Appendix A.2.9.1.1 Class 0 SMSThe storing of a class 0 SMS depends on the module series:• SARA-R4 / SARA-N4 - not stored.9.1.2 parameter rangeThe parameter range depends on the memory storage type:ME (ME message), SM ((U)SIM message) MT (ME + SM):• SARA-R4 / SARA-N4o Values between 0 and 23: SMS stored in ME.o Values between 0 and n: SMS stored in SIM (n depends on SIM card used).BM (Broadcast Message):• SARA-R4 / SARA-N4 - Broadcast Message storage is not supported.SR (Status Report)• SARA-R4 / SARA-N4 - Status Report storage is not supported.9.1.3 LimitationsThe following limitations apply related to the SMS usage:Single SMS• 160 characters if = "GSM 7 bit default alphabet data"• 140 octets if = "8-bit data"• 70 UCS2 characters (2 bytes for each one) if ="16-bit uncompressed UCS2 data"Concatenated SMS (where supported) - "8-bit reference number" type• 153 characters if = "GSM 7 bit default alphabet data"• 134 octets if = "8-bit data"• 67 UCS2 characters (2 bytes for each one) if ="16-bit uncompressed UCS2 data"Concatenated SMS (where supported) - "16-bit reference number" type• The limits are the same as the "8-bit reference number" type, but are decreased by one unit.A concatenated SMS can have as many as 255 parts.9.2 Select message service +CSMS+CSMSSARA-R404M SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModulesSARA-N4Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributesfull Yes No No - +CMS Error9.2.1 DescriptionSelects the message service. It returns the types of messages supported by the MT.
