User Manual
Table Of Contents
- Preface
- Contents
- 1 AT command settings
- 2 General operation
- 3 IPC - Inter Processor Communication
- 4 General
- 4.1 Manufacturer identification +CGMI
- 4.2 Manufacturer identification +GMI
- 4.3 Model identification +CGMM
- 4.4 Model identification +GMM
- 4.5 Firmware version identification +CGMR
- 4.6 Firmware version identification +GMR
- 4.7 IMEI identification +CGSN
- 4.8 IMEI identification +GSN
- 4.9 Identification information I
- 4.10 TE character set configuration +CSCS
- 4.11 International mobile subscriber identification +CIMI
- 4.12 Card identification +CCID
- 4.13 Repeat last command A/
- 5 Mobile equipment control and status
- 6 Call control
- 7 Network service
- 7.1 Subscriber number +CNUM
- 7.2 Signal quality +CSQ
- 7.3 Extended signal quality +CESQ
- 7.4 Operator selection +COPS
- 7.5 Radio Access Technology (RAT) selection +URAT
- 7.6 Network registration status +CREG
- 7.7 Network selection control +PACSP
- 7.8 Channel and network environment description +UCGED
- 7.9 Edit Verizon wireless APN table +VZWAPNE
- 7.10 Read RSRP values +VZWRSRP
- 7.11 Read RSRQ values +VZWRSRQ
- 7.12 eDRX setting +CEDRXS
- 7.13 eDRX read dynamic parameters +CEDRXRDP
- 7.14 Set MNO profile +UMNOPROF
- 7.15 Band selection bitmask +UBANDMASK
- 8 Security
- 9 Short Messages Service
- 9.1 Introduction
- 9.2 Select message service +CSMS
- 9.3 Preferred message storage +CPMS
- 9.4 Preferred message format +CMGF
- 9.5 Save settings +CSAS
- 9.6 Restore settings +CRES
- 9.7 New message indication +CNMI
- 9.8 Read message +CMGR
- 9.9 New message acknowledgement to MT +CNMA
- 9.10 List message +CMGL
- 9.11 Send message +CMGS
- 9.12 Write message to memory +CMGW
- 9.13 Send message from storage +CMSS
- 9.14 Set text mode parameters +CSMP
- 9.15 Delete message +CMGD
- 9.16 Service center address +CSCA
- 9.17 Read concatenated message +UCMGR
- 9.18 List concatenated message +UCMGL
- 9.19 Send concatenated message +UCMGS
- 9.20 Write concatenated message to memory +UCMGW
- 9.21 More messages to send +CMMS
- 9.22 Sending of originating data via the control plane +CSODCP
- 9.23 Terminating data reporting via control plane +CRTDCP
- 10 V24 control and V25ter
- 10.1 Introduction
- 10.2 Circuit 109 behavior &C
- 10.3 Circuit 108/2 behavior &D
- 10.4 DSR override &S
- 10.5 Flow control &K
- 10.6 DTE-DCE character framing +ICF
- 10.7 DTE-DCE local flow control +IFC
- 10.8 Set flow control \Q
- 10.9 UART data rate configuration +IPR
- 10.10 Return to on-line data state O
- 10.11 Escape character S2
- 10.12 Command line termination character S3
- 10.13 Response formatting character S4
- 10.14 Command line editing character S5
- 10.15 Pause before blind dialling S6
- 10.16 Connection completion timeout S7
- 10.17 Command dial modifier time S8
- 10.18 Automatic disconnect delay S10
- 10.19 Escape prompt delay (EPD) S12
- 10.20 Command echo E
- 10.21 Result code suppression Q
- 10.22 DCE response format V
- 10.23 Result code selection and call progress monitoring control X
- 10.24 Reset to default configuration Z
- 10.25 Set to factory defined configuration &F
- 10.26 Display current configuration &V
- 11 SIM management
- 12 SIM toolkit
- 13 Packet switched data services
- 13.1 PDP contexts and parameter definition
- 13.2 PPP LCP handshake behaviour
- 13.3 PDP context definition +CGDCONT
- 13.4 Packet switched data configuration +UPSD
- 13.5 GPRS attach or detach +CGATT
- 13.6 PDP context activate or deactivate +CGACT
- 13.7 Enter PPP state/GPRS dial-up D*
- 13.8 Show PDP address +CGPADDR
- 13.9 GPRS event reporting +CGEREP
- 13.10 GPRS network registration status +CGREG
- 13.11 Manual deactivation of a PDP context H
- 13.12 UE modes of operation for EPS +CEMODE
- 13.13 EPS network registration status +CEREG
- 13.14 Delete non-active PDP contexts +CGDEL
- 13.15 Configure the authentication parameters of a PDP/EPS bearer +UAUTHREQ
- 13.16 PDP IP configuration when roaming +UDCONF=75
- 13.17 Enable/Disable data when roaming +UDCONF=76
- 14 System features
- 14.1 Firmware installation +UFWINSTALL
- 14.2 Firmware update Over AT (FOAT) +UFWUPD
- 14.3 Antenna detection +UANTR
- 14.4 Power saving control (Power SaVing) +UPSV
- 14.5 End user test +UTEST
- 14.6 Internal temperature monitor +UTEMP
- 14.7 Power Saving Mode Setting +CPSMS
- 14.8 Power Saving Mode Assigned Values +UCPSMS
- 14.9 Set LWM2M FOTA URCs +ULWM2MSTAT
- 14.10 Cancel LWM2M FOTA Download +ULWM2M=0
- 14.11 uFOTA configuration +UFOTACONF
- 14.12 Last gasp configuration +ULGASP
- 14.13 LWM2M host device information +UHOSTDEV
- 14.14 RING line configuration +URINGCFG
- 15 GPIO
- 15.1 Introduction
- 15.1.1 GPIO functions
- 15.1.2 GPIO mapping
- 15.1.3 Network status indication
- 15.1.3.1 No service (no network coverage or not registered)
- 15.1.3.2 Registered home network 2G
- 15.1.3.3 Registered home network 3G
- 15.1.3.4 Registered home network Cat NB1
- 15.1.3.5 Registered roaming 2G
- 15.1.3.6 Registered roaming 3G
- 15.1.3.7 Registered roaming Cat NB1
- 15.1.3.8 Data transmission
- 15.1.3.9 Data transmission roaming
- 15.2 GPIO select configuration command +UGPIOC
- 15.3 GPIO read command +UGPIOR
- 15.4 GPIO set command +UGPIOW
- 15.1 Introduction
- 16 File System
- 17 DNS
- 18 Internet protocol transport layer
- 18.1 Introduction
- 18.2 IPv4/IPv6 addressing
- 18.3 Create Socket +USOCR
- 18.4 SSL/TLS mode configuration on TCP socket +USOSEC
- 18.5 Set socket option +USOSO
- 18.6 Get Socket Option +USOGO
- 18.7 Close Socket +USOCL
- 18.8 Get Socket Error +USOER
- 18.9 Connect Socket +USOCO
- 18.10 Write socket data +USOWR
- 18.11 SendTo command (UDP only) +USOST
- 18.12 Read Socket Data +USORD
- 18.13 Receive From command (UDP only) +USORF
- 18.14 Set Listening Socket +USOLI
- 18.15 HEX mode configuration +UDCONF=1
- 18.16 Set socket in Direct Link mode +USODL
- 18.17 UDP Direct Link Packet Size configuration +UDCONF=2
- 18.18 UDP Direct Link Sending timer configuration +UDCONF=3
- 18.19 Timer Trigger configuration for Direct Link +UDCONF=5
- 18.20 Data Length Trigger configuration for Direct Link +UDCONF=6
- 18.21 Character trigger configuration for Direct Link +UDCONF=7
- 18.22 Congestion timer configuration for Direct Link +UDCONF=8
- 18.23 Socket control +USOCTL
- 18.24 Configure Dormant Close Socket Behavior +USOCLCFG
- 19 SSL/TLS
- 20 FTP
- 21 HTTP
- 22 GNSS
- 22.1 NMEA
- 22.2 GNSS power management +UGPS
- 22.3 Assisted GNSS unsolicited indication +UGIND
- 22.4 GNSS profile configuration +UGPRF
- 22.5 Aiding server configuration +UGSRV
- 22.6 GNSS aiding request command +UGAOS
- 22.7 Send of UBX string +UGUBX
- 22.8 GNSS indications timer +UGTMR
- 22.9 Get GNSS time and date +UGZDA
- 22.10 Get GNSS fix data +UGGGA
- 22.11 Get geographic position +UGGLL
- 22.12 Get number of GNSS satellites in view +UGGSV
- 22.13 Get recommended minimum GNSS data +UGRMC
- 22.14 Get course over ground and ground speed +UGVTG
- 22.15 Get satellite information +UGGSA
- 22.16 Ask for localization information +ULOC
- 22.17 Localization information request status unsolicited indication +ULOCIND
- 22.18 GNSS sensor configuration +ULOCGNSS
- 23 I2C
- 24 MQTT
- A Appendix: Error result codes
- B Appendix: AT Commands List
- C Appendix: UDP Direct Link workflow
- D Appendix: Glossary
- Related documents
- Revision history
- Contact
SARA-R4/N4 series-AT Commands Manual
UBX-17003787 - R11
18Internet protocol transport layer
Page 198 of 308
18.16.4.1Timer Trigger (TT)
The user can configure a timeout for sending the data. The timer starts every time a character is read from the
serial interface. When the timer expires, buffered data is sent.
The timer range is between 100 and 120000 ms; the special value 0 (zero) means that the timer is disabled.
By default the timer trigger is disabled for TCP sockets and enabled with a value of 500 ms for UDP sockets.
The +UDCONF=5 command can configure the timer trigger.
18.16.4.2Data Length Trigger (DLT)
The user can configure a maximum buffered data length to reach before sending the data. When this length
is reached the data is sent.
The minimum data length is 3, the maximum data length is 2048 bytes for TCP and 1472 bytes for UDP. If
the data length is set to 0 (zero) the trigger is disabled (every data chunk received from the serial port is
immediately sent to the network).
By default the data length trigger is disabled for TCP sockets and set to 1024 for UDP sockets.
The +UDCONF=6 command can configure the data length trigger.
18.16.4.3Character Trigger (CT)
The user can configure a character that will trigger the data transmission. When the character is detected the
data (including the trigger character) is sent.
If the specified character is -1, the character trigger is disabled.
By default it is disabled for both TCP and UDP sockets.
The +UDCONF=7 command can configure the character trigger.
18.16.4.4Combined Triggers
The user can enable multiple triggers together. The triggers work with an OR logic. This means that the first
trigger reached fires the data transmission.
18.16.4.5About serial data chunks
A data chunk is the amount of data that SIO recognizes as a single data transmission.
If the baud rate is lower than 115200 b/s the time to receive 255 characters is always calculated with
timings for 115200 b/s.
18.16.4.6Data from the network
The data received from the network is immediately forwarded to the serial interface.
18.16.4.7Congestion timer
Is it also possible to set a congestion timer after which, in case of network congestion, the module exits from
direct link.
The timer range is between 1000 and 720000 ms, the special value 0 (zero) means that the timer is disabled.
By default the congestion timer is set to 60000 (60 s) for both TCP and UDP sockets.
The +UDCONF=8 command can configure the congestion timer.
18.17UDP Direct Link Packet Size configuration +UDCONF=2
+UDCONF=2
SARA-R404M SARA-R410M-01B SARA-R410M-02B SARA-R410M-52B SARA-R412MModules
SARA-N4
Syntax PIN required Settings saved Can be aborted Response time Error referenceAttributes
full No No No - +CME Error
18.17.1Description
Set the packet size for the UDP direct link packet.