User Manual

ManualsBrandsSensize ManualsElectronicsSensize Tracker v2 CAT-M

Table Of Contents

Preface
- Applicable products
- How to use this Manual
- Summary table
- u-⁠blox Technical Documentation
- Questions
- Technical Support
Contents
1 AT command settings
- 1.1 Definitions
- 1.2 Storing of AT commands setting
- 1.3 S-parameters
- 1.4 +UDCONF AT command
2 General operation
- 2.1 Start up and initialization
  - 2.1.1 Auto-⁠registration
  - 2.1.2 Operational restrictions
- 2.2 AT commands types
3 IPC - Inter Processor Communication
- 3.1 Multiplexing mode +CMUX
  - 3.1.1 Description
  - 3.1.2 Syntax
  - 3.1.3 Defined values
  - 3.1.4 Notes
4 General
- 4.1 Manufacturer identification +CGMI
  - 4.1.1 Description
  - 4.1.2 Syntax
  - 4.1.3 Defined values
- 4.2 Manufacturer identification +GMI
  - 4.2.1 Description
  - 4.2.2 Syntax
  - 4.2.3 Defined values
- 4.3 Model identification +CGMM
  - 4.3.1 Description
  - 4.3.2 Syntax
  - 4.3.3 Defined values
  - 4.3.4 Notes
- 4.4 Model identification +GMM
  - 4.4.1 Description
  - 4.4.2 Syntax
  - 4.4.3 Defined values
  - 4.4.4 Notes
- 4.5 Firmware version identification +CGMR
  - 4.5.1 Description
  - 4.5.2 Syntax
  - 4.5.3 Defined values
- 4.6 Firmware version identification +GMR
  - 4.6.1 Description
  - 4.6.2 Syntax
  - 4.6.3 Defined values
- 4.7 Request product serial number identification +CGSN
  - 4.7.1 Description
  - 4.7.2 Syntax
  - 4.7.3 Defined values
  - 4.7.4 Notes
- 4.8 IMEI identification +GSN
  - 4.8.1 Description
  - 4.8.2 Syntax
  - 4.8.3 Defined values
- 4.9 Identification information I
  - 4.9.1 Description
  - 4.9.2 Syntax
  - 4.9.3 Defined values
  - 4.9.4 Notes
- 4.10 TE character set configuration +CSCS
  - 4.10.1 Description
  - 4.10.2 Syntax
  - 4.10.3 Defined values
  - 4.10.4 Notes
- 4.11 International mobile subscriber identification +CIMI
  - 4.11.1 Description
  - 4.11.2 Syntax
  - 4.11.3 Defined values
- 4.12 Card identification +CCID
  - 4.12.1 Description
  - 4.12.2 Syntax
  - 4.12.3 Defined values
  - 4.12.4 Notes
- 4.13 Repeat last command A/
  - 4.13.1 Description
  - 4.13.2 Syntax
5 Mobile equipment control and status
- 5.1 Phone activity status +CPAS
  - 5.1.1 Description
  - 5.1.2 Syntax
  - 5.1.3 Defined values
- 5.2 Module switch off +CPWROFF
  - 5.2.1 Description
  - 5.2.2 Syntax
  - 5.2.3 Notes
- 5.3 Set module functionality +CFUN
  - 5.3.1 Description
  - 5.3.2 Syntax
  - 5.3.3 Defined values
  - 5.3.4 Notes
- 5.4 Indicator control +CIND
  - 5.4.1 Description
  - 5.4.2 Syntax
  - 5.4.3 Defined values
  - 5.4.4 Notes
- 5.5 Configuration of indicator control +UCIND
  - 5.5.1 Description
  - 5.5.2 Syntax
  - 5.5.3 Defined values
- 5.6 Mobile termination event reporting +CMER
  - 5.6.1 Description
  - 5.6.2 Syntax
  - 5.6.3 Defined values
- 5.7 Clock +CCLK
  - 5.7.1 Description
  - 5.7.2 Syntax
  - 5.7.3 Defined values
  - 5.7.4 Notes
- 5.8 Set greeting text +CSGT
  - 5.8.1 Description
  - 5.8.2 Syntax
  - 5.8.3 Defined values
  - 5.8.4 Notes
- 5.9 Automatic time zone update +CTZU
  - 5.9.1 Description
  - 5.9.2 Syntax
  - 5.9.3 Defined values
- 5.10 Report mobile termination error +CMEE
  - 5.10.1 Description
  - 5.10.2 Syntax
  - 5.10.3 Defined values
  - 5.10.4 Notes
6 Call control
- 6.1 Dial command D
  - 6.1.1 Description
  - 6.1.2 Syntax
  - 6.1.3 Defined values
  - 6.1.4 Notes
- 6.2 Call answer A
  - 6.2.1 Description
  - 6.2.2 Syntax
  - 6.2.3 Notes
7 Network service
- 7.1 Network parameters definition
- 7.2 Subscriber number +CNUM
  - 7.2.1 Description
  - 7.2.2 Syntax
  - 7.2.3 Defined values
- 7.3 Signal quality +CSQ
  - 7.3.1 Description
  - 7.3.2 Syntax
  - 7.3.3 Defined values
  - 7.3.4 Notes
- 7.4 Extended signal quality +CESQ
  - 7.4.1 Description
  - 7.4.2 Syntax
  - 7.4.3 Defined values
- 7.5 Operator selection +COPS
  - 7.5.1 Description
  - 7.5.2 Syntax
  - 7.5.3 Defined values
  - 7.5.4 Notes
- 7.6 Radio Access Technology (RAT) selection +URAT
  - 7.6.1 Description
  - 7.6.2 Syntax
  - 7.6.3 Defined values
  - 7.6.4 Notes
- 7.7 Network registration status +CREG
  - 7.7.1 Description
  - 7.7.2 Syntax
  - 7.7.3 Defined values
  - 7.7.4 Notes
- 7.8 Network selection control +PACSP
  - 7.8.1 Description
  - 7.8.2 Syntax
  - 7.8.3 Defined values
  - 7.8.4 Notes
- 7.9 Channel and network environment description +UCGED
  - 7.9.1 Description
  - 7.9.2 Syntax
  - 7.9.3 Defined values
  - 7.9.4 Notes
- 7.10 Edit Verizon wireless APN table +VZWAPNE
  - 7.10.1 Description
  - 7.10.2 Syntax
  - 7.10.3 Defined values
  - 7.10.4 Notes
- 7.11 Read RSRP values +VZWRSRP
  - 7.11.1 Description
  - 7.11.2 Syntax
  - 7.11.3 Defined values
  - 7.11.4 Notes
- 7.12 Read RSRQ values +VZWRSRQ
  - 7.12.1 Description
  - 7.12.2 Syntax
  - 7.12.3 Defined values
  - 7.12.4 Notes
- 7.13 Signalling connection status +CSCON
  - 7.13.1 Description
  - 7.13.2 Syntax
  - 7.13.3 Defined values
- 7.14 eDRX setting +CEDRXS
  - 7.14.1 Description
  - 7.14.2 Syntax
  - 7.14.3 Defined values
  - 7.14.4 Notes
- 7.15 eDRX read dynamic parameters +CEDRXRDP
  - 7.15.1 Description
  - 7.15.2 Syntax
  - 7.15.3 Defined values
- 7.16 Set MNO profile +UMNOPROF
  - 7.16.1 Description
    - 7.16.1.1 SIM ICCID selection
  - 7.16.2 Syntax
  - 7.16.3 Defined values
  - 7.16.4 Notes
- 7.17 Band selection bitmask +UBANDMASK
  - 7.17.1 Description
  - 7.17.2 Syntax
  - 7.17.3 Defined values
- 7.18 Device service domain configuration +USVCDOMAIN
  - 7.18.1 Description
  - 7.18.2 Syntax
  - 7.18.3 Defined values
  - 7.18.4 Notes
- 7.19 CIoT optimization configuration +CCIOTOPT
  - 7.19.1 Description
  - 7.19.2 Syntax
  - 7.19.3 Defined values
  - 7.19.4 Notes
- 7.20 NB-⁠IoT band scan tuning +UDCONF=77
  - 7.20.1 Description
  - 7.20.2 Syntax
  - 7.20.3 Defined values
8 Device lock
- 8.1 Enter PIN +CPIN
  - 8.1.1 Description
  - 8.1.2 Syntax
  - 8.1.3 Defined values
  - 8.1.4 Notes
- 8.2 Facility lock +CLCK
  - 8.2.1 Description
  - 8.2.2 Syntax
  - 8.2.3 Defined values
  - 8.2.4 Notes
- 8.3 Change password +CPWD
  - 8.3.1 Description
  - 8.3.2 Syntax
  - 8.3.3 Defined values
  - 8.3.4 Notes
9 Short Messages Service
- 9.1 Introduction
  - 9.1.1 Class 0 SMS
  - 9.1.2 parameter range
  - 9.1.3 Limitations
- 9.2 Select message service +CSMS
  - 9.2.1 Description
  - 9.2.2 Syntax
  - 9.2.3 Defined values
  - 9.2.4 Notes
- 9.3 Preferred message storage +CPMS
  - 9.3.1 Description
  - 9.3.2 Syntax
  - 9.3.3 Defined values
  - 9.3.4 Notes
- 9.4 Preferred message format +CMGF
  - 9.4.1 Description
  - 9.4.2 Syntax
  - 9.4.3 Defined values
  - 9.4.4 Notes
- 9.5 Save settings +CSAS
  - 9.5.1 Description
  - 9.5.2 Syntax
  - 9.5.3 Defined values
- 9.6 Restore settings +CRES
  - 9.6.1 Description
  - 9.6.2 Syntax
  - 9.6.3 Defined values
- 9.7 Show text mode parameters +CSDH
  - 9.7.1 Description
  - 9.7.2 Syntax
  - 9.7.3 Defined values
  - 9.7.4 Notes
- 9.8 New message indication +CNMI
  - 9.8.1 Description
  - 9.8.2 Syntax
  - 9.8.3 Defined values
  - 9.8.4 Notes
- 9.9 Read message +CMGR
  - 9.9.1 Description
  - 9.9.2 Syntax
  - 9.9.3 Defined values
- 9.10 New message acknowledgement to MT +CNMA
  - 9.10.1 Description
  - 9.10.2 Syntax
  - 9.10.3 Defined values
- 9.11 List message +CMGL
  - 9.11.1 Description
  - 9.11.2 Syntax
  - 9.11.3 Defined values
  - 9.11.4 Notes
- 9.12 Send message +CMGS
  - 9.12.1 Description
  - 9.12.2 Syntax
  - 9.12.3 Defined values
  - 9.12.4 Notes
- 9.13 Write message to memory +CMGW
  - 9.13.1 Description
  - 9.13.2 Syntax
  - 9.13.3 Defined values
- 9.14 Send message from storage +CMSS
  - 9.14.1 Description
  - 9.14.2 Syntax
  - 9.14.3 Defined values
- 9.15 Set text mode parameters +CSMP
  - 9.15.1 Description
  - 9.15.2 Syntax
  - 9.15.3 Defined values
- 9.16 Delete message +CMGD
  - 9.16.1 Description
  - 9.16.2 Syntax
  - 9.16.3 Defined values
- 9.17 Service center address +CSCA
  - 9.17.1 Description
  - 9.17.2 Syntax
  - 9.17.3 Defined values
- 9.18 Read concatenated message +UCMGR
  - 9.18.1 Description
  - 9.18.2 Syntax
  - 9.18.3 Defined values
- 9.19 List concatenated message +UCMGL
  - 9.19.1 Description
  - 9.19.2 Syntax
  - 9.19.3 Defined values
- 9.20 Send concatenated message +UCMGS
  - 9.20.1 Description
  - 9.20.2 Syntax
  - 9.20.3 Defined values
- 9.21 Write concatenated message to memory +UCMGW
  - 9.21.1 Description
  - 9.21.2 Syntax
  - 9.21.3 Defined values
- 9.22 More messages to send +CMMS
  - 9.22.1 Description
  - 9.22.2 Syntax
  - 9.22.3 Defined values
- 9.23 Sending of originating data via the control plane +CSODCP
  - 9.23.1 Description
  - 9.23.2 Syntax
  - 9.23.3 Defined values
  - 9.23.4 Notes
- 9.24 Terminating data reporting via control plane +CRTDCP
  - 9.24.1 Description
  - 9.24.2 Syntax
  - 9.24.3 Defined values
  - 9.24.4 Notes
10 V24 control and V25ter
- 10.1 Introduction
- 10.2 Circuit 109 behavior &C
  - 10.2.1 Description
  - 10.2.2 Syntax
  - 10.2.3 Defined values
  - 10.2.4 Notes
- 10.3 Circuit 108/2 behavior &D
  - 10.3.1 Description
  - 10.3.2 Syntax
  - 10.3.3 Defined values
  - 10.3.4 Notes
- 10.4 DSR override &S
  - 10.4.1 Description
  - 10.4.2 Syntax
  - 10.4.3 Defined values
  - 10.4.4 Notes
- 10.5 DTE-⁠DCE character framing +ICF
  - 10.5.1 Description
  - 10.5.2 Syntax
  - 10.5.3 Defined values
  - 10.5.4 Notes
- 10.6 DTE-⁠DCE local flow control +IFC
  - 10.6.1 Description
  - 10.6.2 Syntax
  - 10.6.3 Defined values
  - 10.6.4 Notes
- 10.7 Set flow control \Q
  - 10.7.1 Description
  - 10.7.2 Syntax
  - 10.7.3 Defined values
  - 10.7.4 Notes
- 10.8 UART data rate configuration +IPR
  - 10.8.1 Description
  - 10.8.2 Syntax
  - 10.8.3 Defined values
  - 10.8.4 Notes
- 10.9 Return to on-⁠line data state O
  - 10.9.1 Description
  - 10.9.2 Syntax
  - 10.9.3 Defined values
  - 10.9.4 Notes
- 10.10 Escape character S2
  - 10.10.1 Description
  - 10.10.2 Syntax
  - 10.10.3 Defined values
  - 10.10.4 Notes
- 10.11 Command line termination character S3
  - 10.11.1 Description
  - 10.11.2 Syntax
  - 10.11.3 Defined values
- 10.12 Response formatting character S4
  - 10.12.1 Description
  - 10.12.2 Syntax
  - 10.12.3 Defined values
- 10.13 Command line editing character S5
  - 10.13.1 Description
  - 10.13.2 Syntax
  - 10.13.3 Defined values
- 10.14 Pause before blind dialling S6
  - 10.14.1 Description
  - 10.14.2 Syntax
  - 10.14.3 Defined values
- 10.15 Connection completion timeout S7
  - 10.15.1 Description
  - 10.15.2 Syntax
  - 10.15.3 Defined values
- 10.16 Command dial modifier time S8
  - 10.16.1 Description
  - 10.16.2 Syntax
  - 10.16.3 Defined values
- 10.17 Automatic disconnect delay S10
  - 10.17.1 Description
  - 10.17.2 Syntax
  - 10.17.3 Defined values
  - 10.17.4 Notes
- 10.18 Escape prompt delay (EPD) S12
  - 10.18.1 Description
  - 10.18.2 Syntax
  - 10.18.3 Defined values
  - 10.18.4 Notes
- 10.19 Command echo E
  - 10.19.1 Description
  - 10.19.2 Syntax
  - 10.19.3 Defined values
- 10.20 Result code suppression Q
  - 10.20.1 Description
  - 10.20.2 Syntax
  - 10.20.3 Defined values
- 10.21 DCE response format V
  - 10.21.1 Description
  - 10.21.2 Syntax
  - 10.21.3 Defined values
- 10.22 Result code selection and call progress monitoring control X
  - 10.22.1 Description
  - 10.22.2 Syntax
  - 10.22.3 Defined values
- 10.23 Reset to default configuration Z
  - 10.23.1 Description
  - 10.23.2 Syntax
  - 10.23.3 Defined values
- 10.24 Set to factory defined configuration &F
  - 10.24.1 Description
  - 10.24.2 Syntax
  - 10.24.3 Defined values
- 10.25 Display current configuration &V
  - 10.25.1 Description
  - 10.25.2 Syntax
  - 10.25.3 Notes
11 SIM management
- 11.1 Generic SIM access +CSIM
  - 11.1.1 Description
  - 11.1.2 Syntax
  - 11.1.3 Defined values
- 11.2 Restricted SIM access +CRSM
  - 11.2.1 Description
  - 11.2.2 Syntax
  - 11.2.3 Defined values
  - 11.2.4 Notes
- 11.3 Read the SIM language +CLAN
  - 11.3.1 Description
  - 11.3.2 Syntax
  - 11.3.3 Defined values
  - 11.3.4 Notes
- 11.4 SIM states reporting +USIMSTAT
  - 11.4.1 Description
  - 11.4.2 Syntax
  - 11.4.3 Defined values
  - 11.4.4 Notes
12 SIM toolkit
- 12.1 Introduction
- 12.2 Bearer Independent Protocol status indication +UBIP
  - 12.2.1 Description
  - 12.2.2 Syntax
  - 12.2.3 Defined values
- 12.3 Read the USAT profile +CUSATR
  - 12.3.1 Description
  - 12.3.2 Syntax
  - 12.3.3 Defined values
- 12.4 Write the USAT profile +CUSATW
  - 12.4.1 Description
  - 12.4.2 Syntax
  - 12.4.3 Defined values
- 12.5 Enable USAT terminal URCs +UCUSATA
  - 12.5.1 Description
  - 12.5.2 Syntax
  - 12.5.3 Defined values
  - 12.5.4 Notes
13 Packet switched data services
- 13.1 PDP contexts and parameter definition
- 13.2 PPP LCP handshake behaviour
- 13.3 Printing IP address format +CGPIAF
  - 13.3.1 Description
  - 13.3.2 Syntax
  - 13.3.3 Defined values
- 13.4 PDP context definition +CGDCONT
  - 13.4.1 Description
  - 13.4.2 Syntax
  - 13.4.3 Defined values
  - 13.4.4 Notes
- 13.5 Packet switched data configuration +UPSD
  - 13.5.1 Description
  - 13.5.2 Syntax
  - 13.5.3 Defined values
  - 13.5.4 Notes
- 13.6 GPRS attach or detach +CGATT
  - 13.6.1 Description
  - 13.6.2 Syntax
  - 13.6.3 Defined values
- 13.7 PDP context activate or deactivate +CGACT
  - 13.7.1 Description
  - 13.7.2 Syntax
  - 13.7.3 Defined values
  - 13.7.4 Notes
  - 13.7.5 Examples
- 13.8 Enter PPP state/GPRS dial-⁠up D*
  - 13.8.1 Description
  - 13.8.2 Syntax
  - 13.8.3 Defined values
  - 13.8.4 Notes
- 13.9 Show PDP address +CGPADDR
  - 13.9.1 Description
  - 13.9.2 Syntax
  - 13.9.3 Defined values
- 13.10 Packet switched event reporting +CGEREP
  - 13.10.1 Description
  - 13.10.2 Syntax
  - 13.10.3 Defined values
  - 13.10.4 Explanation of URCs
- 13.11 GPRS network registration status +CGREG
  - 13.11.1 Description
  - 13.11.2 Syntax
  - 13.11.3 Defined values
  - 13.11.4 Notes
- 13.12 UE modes of operation for EPS +CEMODE
  - 13.12.1 Description
  - 13.12.2 Syntax
  - 13.12.3 Defined values
  - 13.12.4 Notes
- 13.13 EPS network registration status +CEREG
- 13.14 Delete non-⁠active PDP contexts +CGDEL
  - 13.14.1 Description
  - 13.14.2 Syntax
  - 13.14.3 Defined values
- 13.15 Configure the authentication parameters of a PDP/EPS bearer +UAUTHREQ
  - 13.15.1 Description
  - 13.15.2 Syntax
  - 13.15.3 Defined values
  - 13.15.4 Notes
- 13.16 PDP context read dynamic parameters +CGCONTRDP
  - 13.16.1 Description
  - 13.16.2 Syntax
  - 13.16.3 Defined values
  - 13.16.4 Notes
- 13.17 Initial PDP context activation +CIPCA
  - 13.17.1 Description
  - 13.17.2 Syntax
  - 13.17.3 Defined values
- 13.18 PDP IP configuration when roaming +UDCONF=75
  - 13.18.1 Description
  - 13.18.2 Syntax
  - 13.18.3 Defined values
  - 13.18.4 Notes
- 13.19 Disable data when roaming +UDCONF=76
  - 13.19.1 Description
  - 13.19.2 Syntax
  - 13.19.3 Defined values
  - 13.19.4 Notes
14 System features
- 14.1 Firmware installation +UFWINSTALL
  - 14.1.1 Description
  - 14.1.2 Syntax
  - 14.1.3 Notes
- 14.2 Firmware update Over AT (FOAT) +UFWUPD
  - 14.2.1 Description
  - 14.2.2 Description
  - 14.2.3 Syntax
  - 14.2.4 Defined values
  - 14.2.5 Notes
- 14.3 Antenna detection +UANTR
  - 14.3.1 Description
  - 14.3.2 Syntax
  - 14.3.3 Defined values
  - 14.3.4 Notes
- 14.4 End user test +UTEST
- 14.5 Internal temperature monitor +UTEMP
  - 14.5.1 Description
  - 14.5.2 Syntax
  - 14.5.3 Defined values
  - 14.5.4 Notes
- 14.6 Back up the file system +UBKUPDATA
  - 14.6.1 Description
  - 14.6.2 Syntax
  - 14.6.3 Defined values
  - 14.6.4 Notes
- 14.7 Cancel FOTA download +UFOTA
  - 14.7.1 Description
  - 14.7.2 Syntax
  - 14.7.3 Defined values
  - 14.7.4 Notes
- 14.8 Sets FOTA status URCs +UFOTASTAT
  - 14.8.1 Description
  - 14.8.2 Syntax
  - 14.8.3 Defined values
  - 14.8.4 Notes
- 14.9 uFOTA configuration +UFOTACONF
  - 14.9.1 Description
  - 14.9.2 Syntax
  - 14.9.3 Defined values
  - 14.9.4 Notes
- 14.10 Last gasp configuration +ULGASP
  - 14.10.1 Description
  - 14.10.2 Syntax
  - 14.10.3 Defined values
  - 14.10.4 Notes
- 14.11 RING line configuration +URINGCFG
  - 14.11.1 Description
  - 14.11.2 Syntax
  - 14.11.3 Defined values
  - 14.11.4 Notes
15 Power management
- 15.1 Power saving control (Power SaVing) +UPSV
  - 15.1.1 Description
  - 15.1.2 Syntax
  - 15.1.3 Defined values
  - 15.1.4 Notes
- 15.2 Power Saving Mode Setting +CPSMS
  - 15.2.1 Description
  - 15.2.2 Syntax
  - 15.2.3 Defined values
  - 15.2.4 Notes
- 15.3 Power saving mode assigned values +UCPSMS
  - 15.3.1 Description
  - 15.3.2 Syntax
  - 15.3.3 Defined values
  - 15.3.4 Notes
- 15.4 PSM indication +UPSMR
  - 15.4.1 Description
  - 15.4.2 Syntax
  - 15.4.3 Defined values
  - 15.4.4 Notes
16 GPIO
- 16.1 Introduction
- 16.2 GPIO select configuration command +UGPIOC
  - 16.2.1 Description
  - 16.2.2 Syntax
  - 16.2.3 Defined values
- 16.3 GPIO read command +UGPIOR
  - 16.3.1 Description
  - 16.3.2 Syntax
  - 16.3.3 Defined values
  - 16.3.4 Notes
- 16.4 GPIO set command +UGPIOW
  - 16.4.1 Description
  - 16.4.2 Syntax
  - 16.4.3 Defined values
  - 16.4.4 Notes
17 File System
- 17.1 File tags
  - 17.1.1 Description
- 17.2 Download file +UDWNFILE
  - 17.2.1 Description
  - 17.2.2 Syntax
  - 17.2.3 Defined values
  - 17.2.4 Notes
- 17.3 List files information +ULSTFILE
  - 17.3.1 Description
  - 17.3.2 SARA-R4 syntax
  - 17.3.3 Defined values
- 17.4 Read file +URDFILE
  - 17.4.1 Description
  - 17.4.2 Syntax
  - 17.4.3 Defined values
  - 17.4.4 Notes
- 17.5 Partial read file +URDBLOCK
  - 17.5.1 Description
  - 17.5.2 Syntax
  - 17.5.3 Defined values
  - 17.5.4 Notes
- 17.6 Delete file +UDELFILE
  - 17.6.1 Description
  - 17.6.2 Syntax
  - 17.6.3 Defined values
- 17.7 Partial download file +UDWNBLOCK
  - 17.7.1 Description
  - 17.7.2 Syntax
  - 17.7.3 Defined values
  - 17.7.4 Notes
- 17.8 File system limits
  - 17.8.1 Allowed characters in filenames
  - 17.8.2 Limits
18 DNS
- 18.1 Resolve name / IP number through DNS +UDNSRN
  - 18.1.1 Description
  - 18.1.2 Syntax
  - 18.1.3 Defined values
  - 18.1.4 Notes
19 Internet protocol transport layer
- 19.1 Introduction
- 19.2 IPv4/IPv6 addressing
  - 19.2.1 Introduction
  - 19.2.2 IPv4
  - 19.2.3 IPv6
- 19.3 Create Socket +USOCR
  - 19.3.1 Description
  - 19.3.2 Syntax
  - 19.3.3 Defined values
  - 19.3.4 Notes
- 19.4 SSL/TLS/DTLS mode configuration on TCP/UDP socket +USOSEC
  - 19.4.1 Description
  - 19.4.2 Syntax
  - 19.4.3 Defined values
- 19.5 Set socket option +USOSO
  - 19.5.1 Description
  - 19.5.2 Syntax
  - 19.5.3 Defined values
  - 19.5.4 Notes
- 19.6 Get Socket Option +USOGO
  - 19.6.1 Description
  - 19.6.2 Syntax
  - 19.6.3 Defined values
  - 19.6.4 Notes
- 19.7 Close Socket +USOCL
  - 19.7.1 Description
  - 19.7.2 Syntax
  - 19.7.3 Defined values
  - 19.7.4 Notes
- 19.8 Get Socket Error +USOER
  - 19.8.1 Description
  - 19.8.2 Syntax
  - 19.8.3 Defined values
- 19.9 Connect Socket +USOCO
  - 19.9.1 Description
  - 19.9.2 Syntax
  - 19.9.3 Defined values
  - 19.9.4 Notes
- 19.10 Write socket data +USOWR
  - 19.10.1 Description
  - 19.10.2 Syntax
  - 19.10.3 Defined values
  - 19.10.4 Notes
- 19.11 SendTo command (UDP only) +USOST
  - 19.11.1 Description
  - 19.11.2 Syntax
  - 19.11.3 Defined values
  - 19.11.4 Notes
- 19.12 Read Socket Data +USORD
  - 19.12.1 Description
  - 19.12.2 Syntax
  - 19.12.3 Defined values
  - 19.12.4 Notes
- 19.13 Receive From command (UDP only) +USORF
  - 19.13.1 Description
  - 19.13.2 Syntax
  - 19.13.3 Defined values
  - 19.13.4 Notes
- 19.14 Set Listening Socket +USOLI
  - 19.14.1 Description
  - 19.14.2 Syntax
  - 19.14.3 Defined values
  - 19.14.4 Notes
- 19.15 HEX mode configuration +UDCONF=1
  - 19.15.1 Description
  - 19.15.2 Syntax
  - 19.15.3 Defined values
- 19.16 Set socket in Direct Link mode +USODL
  - 19.16.1 Description
  - 19.16.2 Syntax
  - 19.16.3 Defined values
  - 19.16.4 Enhanced Direct Link
- 19.17 UDP Direct Link Packet Size configuration +UDCONF=2
  - 19.17.1 Description
  - 19.17.2 Syntax
  - 19.17.3 Defined values
- 19.18 UDP Direct Link Sending timer configuration +UDCONF=3
  - 19.18.1 Description
  - 19.18.2 Syntax
  - 19.18.3 Defined values
- 19.19 Timer Trigger configuration for Direct Link +UDCONF=5
  - 19.19.1 Description
  - 19.19.2 Syntax
  - 19.19.3 Defined values
- 19.20 Data Length Trigger configuration for Direct Link +UDCONF=6
  - 19.20.1 Description
  - 19.20.2 Syntax
  - 19.20.3 Defined values
- 19.21 Character trigger configuration for Direct Link +UDCONF=7
  - 19.21.1 Description
  - 19.21.2 Syntax
  - 19.21.3 Defined values
- 19.22 Direct Link disconnect DSR line handling +UDCONF=10
  - 19.22.1 Description
  - 19.22.2 Syntax
  - 19.22.3 Defined values
- 19.23 Socket control +USOCTL
  - 19.23.1 Description
  - 19.23.2 Syntax
  - 19.23.3 Defined values
  - 19.23.4 Notes
- 19.24 Configure Dormant Close Socket Behavior +USOCLCFG
  - 19.24.1 Description
  - 19.24.2 Syntax
  - 19.24.3 Defined values
20 Device and data security
- 20.1 Introduction
- 20.2 Device security
- 20.3 Data security
21 FTP
- 21.1 FTP service configuration +UFTP
  - 21.1.1 Description
  - 21.1.2 Syntax
  - 21.1.3 Defined values
  - 21.1.4 Notes
- 21.2 FTP command +UFTPC
  - 21.2.1 Description
  - 21.2.2 Syntax
  - 21.2.3 Defined values
  - 21.2.4 Notes
- 21.3 FTP error +UFTPER
  - 21.3.1 Description
  - 21.3.2 Syntax
  - 21.3.3 Defined values
22 HTTP
- 22.1 HTTP control +UHTTP
  - 22.1.1 Description
  - 22.1.2 Syntax
  - 22.1.3 Defined values
  - 22.1.4 Notes
- 22.2 HTTP advanced control+UHTTPAC
  - 22.2.1 Description
  - 22.2.2 Syntax
  - 22.2.3 Defined values
  - 22.2.4 Examples and use cases
- 22.3 HTTP command +UHTTPC
  - 22.3.1 Description
  - 22.3.2 Syntax
  - 22.3.3 Defined values
  - 22.3.4 Notes
- 22.4 HTTP protocol error +UHTTPER
  - 22.4.1 Description
  - 22.4.2 Syntax
  - 22.4.3 Defined values
23 Positioning
- 23.1 NMEA
- 23.2 AssistNow services
- 23.3 GNSS
- 23.4 CellLocate and hybrid positioning
24 I2C
- 24.1 Introduction
- 24.2 I2C open logical channel +UI2CO
  - 24.2.1 Description
  - 24.2.2 Syntax
  - 24.2.3 Defined values
- 24.3 I2C write to peripheral +UI2CW
  - 24.3.1 Description
  - 24.3.2 Syntax
  - 24.3.3 Defined values
- 24.4 I2C read from peripheral +UI2CR
  - 24.4.1 Description
  - 24.4.2 Syntax
  - 24.4.3 Defined values
- 24.5 I2C read from peripheral register +UI2CREGR
  - 24.5.1 Description
  - 24.5.2 Syntax
  - 24.5.3 Defined values
- 24.6 I2C close logical channel +UI2CC
  - 24.6.1 Description
  - 24.6.2 Syntax
25 MQTT
- 25.1 Introduction
- 25.2 MQTT profile configuration +UMQTT
  - 25.2.1 Description
  - 25.2.2 Syntax
  - 25.2.3 Defined values
  - 25.2.4 Notes
- 25.3 MQTT will topic configuration +UMQTTWTOPIC
  - 25.3.1 Description
  - 25.3.2 Syntax
  - 25.3.3 Defined values
  - 25.3.4 Notes
- 25.4 MQTT will message configuration +UMQTTWMSG
  - 25.4.1 Description
  - 25.4.2 Syntax
  - 25.4.3 Defined values
  - 25.4.4 Notes
- 25.5 Save/Restore MQTT profile from NVM +UMQTTNV
  - 25.5.1 Description
  - 25.5.2 Syntax
  - 25.5.3 Defined values
- 25.6 MQTT command +UMQTTC
- 25.7 MQTT error +UMQTTER
26 Lightweight M2M
- 26.1 LwM2M Objects management
- 26.2 LwM2M connectivity
A Appendix: Error result codes
- A.1 Mobile termination error result codes +CME ERROR
- A.2 Message service error result codes +CMS ERROR
- A.3 Firmware install final result codes
  - A.3.1 SARA-⁠R4 / SARA-⁠N4 final result codes
- A.4 FOAT error result codes
  - A.4.1 SARA-⁠R4 / SARA-⁠N4 error result codes
- A.5 Internal TCP/UDP/IP stack class error codes
- A.6 Internet suite error classes
B Appendix: AT Commands List
- B.1 Parameters stored in non volatile memory
- B.2 Saving AT commands configuration
- B.3 Estimated command response time
- B.4 Multiple AT command interfaces
- B.5 Mobile Network Operator profiles
C Appendix: UDP Direct Link workflow
- C.1 Data from the IP network to the external port
- C.2 Data from the external port to the IP network
D Appendix: Glossary
Related documents
Revision history
Contact

SARA-R4 series-AT commands manual

UBX-17003787 - R16



2General operation

Page 19 of 401

If the URCs are enabled or for the three described classes of URCs, the buffered URCs are sent out only when

the AT interface is in idle again; this occurs as soon as:

• The data mode is released (the data call is disconnected)

• The final result code for an AT command is issued

The DTE should wait some time (the recommended value is at least 20 ms) after the reception of an AT

command final result code or URC before issuing a new AT command to give the DCE the opportunity to

transmit the buffered URCs. Otherwise the collision of the URCs with the subsequent AT command is

still possible.

In case multiple AT interfaces are available, it should be advisable to use one of the different AT interfaces

to manage all the user enabled URCs, while use the others ones to send AT commands and receive their

responses.

Anyway URCs related to external causes (e.g. RING) are issued on all interfaces.

2.2.6Intermediate Result Code (IRC)

An intermediate result code is a string message (provided by the DCE) which provides to the DTE some

information about the processing status of the pending AT command.