Why Doesn‘t The SMS Mode Work on The Cellular Modem
In the field of IIoT, the data transfer unit, Cellular Modem, is widely used in various monitoring, data collection and remote control scenarios as a key device for remote data transmission. Among them, SMS mode, as an important communication method of Cellular Modem, has irreplaceable advantages in specific environments due to its characteristics of no dependence on network coverage, low cost, and high reliability. However, in practical applications, sometimes the Cellular Modem SMS mode does not work, which not only affects the normal transmission of data, but also may pose a threat to the stability and reliability of the entire system.
1. What is the working principle of Cellular Modem SMS mode
Before discussing the reasons for the inoperative SMS mode of the Cellular Modem, we first need to understand the basic working principle of the SMS mode of the Cellular Modem. The SMS mode of Cellular Modem mainly relies on the SMS service of the mobile communication network. It achieves the conversion and transmission between serial data and SMS through the built-in SMS module of the Cellular Modem or external SMS devices such as SMS modems. When the Cellular Modem receives data sent by the serial port, it will encapsulate it into a SMS format and send it to the specified mobile phone number through the mobile communication network; Similarly, when the Cellular Modem receives a short message from the mobile communication network, it will also parse it into serial port data and send it to the connected terminal device.
2. Reasons for The Inoperative SMS Mode of The Cellular Modem
2.1 Problems with Mobile Communication Networks
● Insufficient signal coverage: If the mobile communication network signal coverage in the area where the Cellular Modem is located is insufficient or the signal quality is poor, it will result in the inability to send or receive SMS messages normally.
● SIM card problem: SIM card arrears, damage or improper installation may cause the SMS service to not work properly.
● Operator restrictions: Some operators may have restrictions or adjustments on SMS services, such as limiting the frequency of SMS sending and the content format of SMS messages.
2.2 Cellular Modem Equipment Problems
● lSMS module failure: The built-in SMS module of the Cellular Modem or the external SMS modem may fail, resulting in the inability to send or receive SMS messages normally.
● Configuration error: The SMS parameter configuration error of the Cellular Modem, such as the SMS center number and SMS format, may also cause the SMS mode to not work.
● Firmware issue: The firmware version of the Cellular Modem is outdated or has bugs, which may also affect the normal use of the SMS function.
2.3 External Factor Interference
● Electromagnetic interference: Strong electromagnetic fields may interfere with the communication module of the Cellular Modem, resulting in failure to send or receive SMS messages.
● Power issues: Unstable power supply or poor power quality may also affect the normal operation of the Cellular Modem.
3. Troubleshooting And Solution Strategies
3.1 Checking The Mobile Communication Network
● Signal test: Use a signal tester or mobile phone to check the signal strength and quality of the mobile communication network in the area where the Cellular Modem is located.
● SIM card check: Confirm whether the SIM card is properly installed, whether it is overdue, whether it is damaged, and try to replace it with a new SIM card for testing.
● Contact the operator: Consult the operator about the restrictions and adjustments of SMS services to ensure that the SMS service of the Cellular Modem is not restricted.
3.2 Checking The Cellular Modem Device
● ISMS module check: check whether the built-in SMS module of the Cellular Modem or the external SMS modem is working properly. If necessary, replace it with a new module or device for testing.
● Configuration check: Carefully check the SMS parameter configuration of the Cellular Modem to ensure that all parameters are set correctly.
● Firmware upgrade: Check whether the firmware version of the Cellular Modem is outdated or has bugs. If necessary, perform a firmware upgrade operation.
3.3 Investigate External Factors
● Troubleshooting electromagnetic interference: Check whether there is a strong electromagnetic field interference source around the Cellular Modem, and try moving the Cellular Modem to another location for testing.
● Power supply inspection: Check whether the power supply of the Cellular Modem is stable and reliable. If necessary, replace it with a new power supply for testing.
The inoperative SMS mode of the Cellular Modem may be caused by various reasons, including problems with the mobile communication network, problems with the Cellular Modem device, and interference from external factors. When troubleshooting and solving such problems, it is necessary to comprehensively consider various possible factors and conduct troubleshooting one by one according to a certain order and steps. Through the troubleshooting and resolution strategies provided in this article, we believe that we can help you quickly locate the cause of the problem and take appropriate measures to restore the normal operation of the Cellular Modem SMS mode.
- |
- +1 赞 0
- 收藏
- 评论 0
本文由三年不鸣转载自usr Official Website,原文标题为:Why doesn't the SMS mode work on the Cellular Modem,本站所有转载文章系出于传递更多信息之目的,且明确注明来源,不希望被转载的媒体或个人可与我们联系,我们将立即进行删除处理。
相关推荐
How Cellular Router and Cellular Modem Achieve Remote Networking
In today‘s wave of digital transformation, traditional industries are progressively embracing intelligence and networking. Remote networking has emerged as a vital tool to enhance work efficiency, reduce operational costs, and bolster enterprise flexibility. Cellular Router and Cellular Modem serve as the cornerstone devices for realizing remote networking.
技术探讨 发布时间 : 2024-07-25
Platform-to-Cellular Modem Communication: The Truth and In-depth Analysis of Fixed IP
A fixed IP address is not a necessary condition for platform-to-Cellular Modem communication, but it does have unique advantages in certain scenarios. In choosing a communication method, it is necessary to comprehensively consider factors such as the network environment, the needs of the application scenario, and costs.
技术探讨 发布时间 : 2024-05-24
Characteristics and Applications of Cellular Modem
Cellular modems can provide enterprises with safe and stable data transmission channels, support online configuration, and realize intelligent management of equipment. It has the characteristics of low power consumption and wireless transparent transmission.
技术探讨 发布时间 : 2023-05-12
有人物联(usr)通信网关/通信模组/交换机选型指南(英文)
描述- Positioned as a "trustworthy smart IIoT partner" and an industry-leading IIoT software/hardware solution provider,Jinan USR IOT Technology Limited operates in the upstream and downstream sections of the IIoT industry value chain and focuses on the R&D, production and sales of communication products in order to fulfill the mission of “connection value, and value connection”.
型号- USR-N5X0 SERIES,USR-G817,USR-K7,USR-K6,USR-M100,USR-N510,USR-CANET200,USR-N5X0,USR-ISG SERIES,USR-TCP232-T2,USR-G806 SERIES,USR-N668,USR-DR504-G,U200,USR-ISG008P,USR-ISG008,USR-DR502-E,USR-G816,USR-ISG005,USR-G816H,USR-G806,USR-G806W,USR-TCP232-ED2,USR-G809,USR-G808,USR-TCP232-E2,USR-G806S,USR-N540,USR-DR302,USR-ISG,USR-DR301,USR-N520,USR-W630,USR-G771-E,USR-W610,USR-TCP232-S2,WH-LTE-7S1-E,USR-G781,USR-G786-G,USR-DR404,USR-TCP232-410S,USR-TCP232-304,USR-G805,USR-TCP232-302
有人物联(usr)M2M蜂窝调制解调器(DTU)选型指南
描述- The USR IOT industrial cellular modems have been designed to an industrial specification to allow an easy connection for remote devices over the internet. The USR IOT modems move away from the traditional approach of TCP/UDP connection built and maintenance using a set of AT commands which require a high skill level to implement correctly and reliably.
型号- USR-DR152,USR-DR150,USR-G786-AUX,USR-DR15X SERIES,USR-DR15X,USR-DR154,USR-G771-E,USR-MB706,USR-G771,WH-LTE-7S1,WH-LTE-7S1-E,USR-DR504,USR-G786-G,USR-G786-EUX,USR-G786,USR-DR502,USR-DR504-G,USR-DR504-EUX,USR-DR502-E,USR-DR504-AUX
Differences between 4G DTU and 4G industrial router
This article tells about the differences between 4G DTU and 4G industrial routers: different network interfaces, different methods of use, different network anti-interference,and different application environments
设计经验 发布时间 : 2023-07-28
Function of 4G Cellular Modem in Hydraulic Engineering
With the rapid development of Internet of Things technology, 4G cellular modem (data terminal equipment) is more and more widely used in various fields. The 4G cellular modem also plays an important role in water conservancy projects. This paper will discuss the specific application of 4G cellular modem in hydraulic engineering and the benefits it brings.
技术探讨 发布时间 : 2024-02-22
The Difference Between Industrial Modems and Industrial Gateways
The applications of Cellular modems and gateways are different, which need to be selected based on specific application scenarios. Cellular modems are preferred if they require remote monitoring and data collection. Gateways are available for functions such as device interconnection and intelligent control.
技术探讨 发布时间 : 2023-06-04
Smart Water Solutions: Achieving Seamless Integration Between Cellular Router and Cellular Modem Products
Cellular Router and Cellular Modem products play a vital role in smart water solutions. Through reasonable network planning and design, equipment selection and configuration, data integration and processing, and system optimization and upgrades, we can achieve seamless integration between Cellular Router and Cellular Modem products, bringing unprecedented changes to the water industry.
技术探讨 发布时间 : 2024-06-23
USR-G781 Dual Ethernet with serial port 4G router specification
型号- USR-G781,USR-G782-A,USR-G781-43,USR-G781-E,USR-G781-AU
电子商城
登录 | 立即注册
提交评论