Ublox SARA-R422 - Development Guide Manual

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UBX-20050829 - R02

C1-Public www.u-blox.com

SARA-R42

Application development guide

Application note

Abstract

This document provides detailed technology architecture and examples of how to use AT commands

with u-blox SARA-R422 / SARA-R422S / SARA-R422M8S modules.

SARA-R4

Table of Contents

Document Information2
Contents3
- Table of Contents3
1 Introduction6
2 Cellular Technology Overview7
- Radio Access Technologies (Rats)7
- Low Power Profile Features8
3 Application Design and Development9
- Initial Design Decisions9
- Application Stages10
- Application Modes11
4 AT Commands Response Parser12
- Operational Modes of the at Interface12
- Unsolicited Result Code13
5 Local Connectivity14
- Serial Interface Configuration14
  - Auxiliary (AUX) Serial Interface Configuration14
- AT Interface15
  - Set a Fixed Baud Rate15
- Multiplexer (MUX)15
- Point-To-Point Protocol (PPP)16
- Generic Guidelines16
6 MNO Profiles17
- Using MNO Profiles17
- Modifiable Parameters17
- MNO Profile Setting Examples18
- Global Profile (+UMNOPROF: 90)18
- Standard Europe (+UMNOPROF: 100)18
- Gcf-Ptcrb (+Umnoprof: 201)18
- SIM ICCID Select Profile (+UMNOPROF: 1)18
7 Network Registration20
- Band Configuration20
  - Scan Time20
- First Time Registration Setup21
- UMACQOSTMR Timer Configuration23
- Registration Monitoring24
  - Detecting the Access Technology24
  - PS Connections at RAT Change24
- Mobility Scenarios25
  - Mobility Management Procedures25
8 PSM, Edrx and Deep-Sleep Mode26
- Power Saving Mode (PSM)26
- Deep-Sleep Mode29
- Edrx30
  - Edrx Deep-Sleep and Paging Only Image32
  - Functional Diagram of Edrx and PSM32
9 Monitoring Module Status34
- Retrieve and Interpret Diagnostic Information34
  - Diagnostic Information Via Urcs35
  - Diagnostic Information Via Polling36
- Full-Stack Watchdog: How to React to Unexpected Conditions38
10 Testing39
- OEM Production Testing39
- Network Simulators Testing44
11 Sim45
- Chip SIM45
12 Sms46
- Preferred Message Storage46
- SMS Handling and Access Technology46
13 EFS Backup & Restore47
- Description47
14 Restore Factory Configuration50
15 Specialized Application Notes by Topic52
- Multiplexer52
- IP Based Applications52
- Security Suite52
- Secure Communication52
- Gnss52
- Lwm2M52
- AWS Iot Core52
- FW Update52
16 Migration Guide from SARA-R410M / SARA-R412M and Hints53
Appendix56
A Glossary56
Related Documentation57
Revision History57
Contact58

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