Short Message Service Communication Research Articles

Bayesian Classification for SMS Spam Detection in Mobile Devices

Abstract: The abundance of unwanted spam messages complicates the use of Short Message Service (SMS) for efficient communication in modern times. This study investigates developing and utilizing a Naive Bayes Theorem-based Ham/Spam detection system. Because of its ease of use and effectiveness in text classification tasks, the Naive Bayes classifier is used. A collection of SMS messages labeled as” spam” or” ham” (non-spam) makes up the dataset that was used for testing and training. Preprocessing methods, including tokenization, stop-word elimination, and stemming, are employed to extract pertinent features from the text messages. The Naive Bayes classifier learns how words relate to whether they’re in a spam or non-spam message by looking at some examples from the dataset. Utilizing criteria such as accuracy, precision, and confusion matrix on a separate testing set, the classifier’s performance is evaluated. Additionally, the impact of varying parameters such as smoothing techniques and feature selection methods on the classifier’s performance is analyzed. The experimental results used to distinguishing between ham and spam messages in SMS communication

Monitoring Pergeseran Tanah Tapak Tower Transmisi PT (PLN) Persero Dengan Menggunakan SMS Sebagai Notifikasi Peringatan

Landslides are one of the causes of the collapse of the transmission tower of PT PLN (Persero) which caused power outages, therefore monitoring the shifting of the transmission tower tread is very necessary so that power outages due to the collapsed tower can be anticipated faster. In this study the authors made a study to monitor tower shifts by using Ultrasonic sensors and LVDT sensors (Linear Variable Differential Transducer), Ultrasonic sensors function to detect shifts from towers and LVDT sensors function to detect shifts from the left and right tread tower ground. In this research, there are three main sensors, namely 2 LVDT sensors and one Ultasonic sensor - each sensor is placed in a safe position from interference and has the least possibility of being affected by landslides, Ultrasonic sensors read the tower shift towards the sensor mounted on the center side and LVDT sensors read the shift ground tread tower on the left and right side of the tower. The sensor sends the signal then is converted by the ATMega 8535 microcontroller into a millimeter unit for LVDT sensors and centimeter meter for Ultrasonic sensors. To find out the changes that occur in the tower and tower ground. Every change in distance or the occurrence of a microcontroller shift sends event data in the form of tower numbers and tower shift distances from each sensor reading using SMS (Short Message Service) communication. The installed LVDT sensor has a reading accuracy rate of 98,05% for LVDT 1 and 98,98% for LVDT 2 in millimeters and an Ultrasonic sensor has a reading accuracy rate of 99,44% in centimeters.

Risk factors for stillbirth and neonatal mortality among participants in Mobile WACh NEO pilot, a two-way SMS communication program in Kenya.

Globally, 2.5 million neonates die and 2 million more are stillborn each year; the vast majority occur where access to life-saving care is limited. High quality, feasible interventions are needed to reach, educate and empower pregnant women and new mothers to improve care-seeking behaviors. Mobile WACh (Mobile solutions for Women's and Children's health) NEO is a human-computer hybrid mobile health (mHealth) system that allows for two-way short message service (SMS) communication between women and healthcare workers during the peripartum period. We performed a secondary prospective cohort analysis of data from the Mobile WACh NEO pilot study to determine maternal characteristics associated with neonatal death and stillbirth and examine participant messaging associated with these events. Pregnant women were enrolled at two Kenyan public health clinics between 28-36 weeks gestation. They received personalized, educational, action-oriented SMS messages during pregnancy and through 14 weeks postpartum. Participants could message the study at any time and study nurses responded. Standardized questionnaires assessed participant characteristics at baseline and 14 weeks postpartum. Outcomes were ascertained at study visits or by SMS report. Among 798 pregnant women enrolled, median age was 24 years [IQR 21, 29], 37% were primiparous and 92% used SMS as a primary mode of communication. Seventeen neonatal deaths and 13 stillbirths occurred. Older maternal age was associated with increased risk of stillbirth [aRR 1.12 (CI 1.02-1.24), p <0.05]. We found no significant predictors of neonatal death. Participant messaging to study nurse about concerns in the week preceding death was less common prior to infant death after discharge home from facility birth (9%) than prior to stillbirth (23%). We found limited predictors of neonatal death and stillbirth, suggesting identifying women prenatally for targeted support may not be a feasible strategy. Scarce messaging from mothers whose neonates died may reflect difficulties identifying illness or rapid deterioration and needs to be better understood to design and test interventions for this high-risk period. Messaging prior to stillbirth, while at similar levels as other periods, does not appear to have an impact as most women do not experience identifiable signs or symptoms prior to the event.

Vaccine Cold Chain Monitoring System Using IoT Vaccine Fridge for Developing Countries

콜드체인의 마지막 단계인 ë°±ì‹ ì „ë‹¬ ê³¼ì •ì—ì„œ 대부분 얼음을 넣은 ë‹¨ì—´ì»¨í Œì´ë„ˆë¡œ 온도를 ì¡°ì ˆí•˜ë©°, ë°±ì‹ ì˜ 온도 ì¡°ì ˆì´ ì ì ˆí•˜ì§€ 않아 낭비되는 ë°±ì‹ ì˜ 양이 상당하다. ì˜ˆë°©ì ‘ì¢ ì„ ê´€ë¦¬í•˜ê³ ìš´ì˜í•˜ëŠ”ë° 온도 데이터가 중요하며, 본 연구에서는 실시간 ë°±ì‹ ì „ë‹¬ 모니터링 ì‹œìŠ¤í œì„ 개발하였다. 휴대용 ë°±ì‹ ëƒ‰ìž¥ê³ ì˜ 온도, 위치 및 ì „ë ¥ 소비 데이터를 수집하기 위해 문자(Short Message Service) í†µì‹ ë°©ë²•ì„ ì‚¬ìš©í•˜ì˜€ê³ , 한국과 탄자니아(아루샤 및 킬리만자로 지역)에서 ì‹œìŠ¤í œì„ í ŒìŠ¤íŠ¸í•˜ì˜€ë‹¤. 개발된 ë°±ì‹ ëƒ‰ìž¥ê³ ëŠ” ë¬¸ìží†µì‹ ì„ 통해 데이터 손실없이 실시간으로 ë°±ì‹ ìƒíƒœë¥¼ 모니터링을 í• ìˆ˜ 있었다. ë°±ì‹ ì˜ 상태 및 데이터는 클라우드 서버를 통해 웹 기반 ìœ ì € 인터페이스에서 í™•ì¸í• ìˆ˜ 있었다. In the process of vaccine delivery and vaccination, temperature is mostly controlled by an insulated containers containing ice. Moreover, amount of wasted vaccine is significant because the temperature of the vaccine is not properly controlled. A core challenge of vaccination is temperature data monitoring, since it is critical for managing and operating strategical vaccination by health organizations. In this research, a real-time monitoring vaccine carrier system was developed. Temperature, location, and power consumption data of the vaccine carrier were monitored and working performances of the vaccine carrier were tested in both Korea and Tanzania (Arusha and Kilimanjaro regions). For both places, Short Message Service (SMS) communication method was used to send information of the carrier’s status. As a result, the monitoring system was able to transmit and receive real-time data of the vaccine carrier status while the vaccine carrier was tested. The vaccine status data can be accessed from any location through the cloud server and web-based user interface. Keywords: Real-time monitoring system, Rural village, SMS communication method, Vaccine fridge, Vaccination

Text Message Preferences for Surveillance Colonoscopy Reminders Among Colorectal Cancer Survivors.

Background. Surveillance colonoscopy 1-year after colorectal cancer (CRC) surgery effectively reduces CRC mortality, yet less than half of survivors undergo this procedure. Text message reminders can improve CRC screening and other health behaviors, but use of this strategy to address barriers to CRC surveillance has not been reported. Objectives. The goal of this qualitative study was to assess CRC survivor perspectives on barriers to colonoscopy to inform the design of a theory-based, short message service (SMS) intervention to increase surveillance colonoscopy utilization. Method. CRC survivors in Western Washington participated in one of two focus groups to explore perceived barriers to completing surveillance colonoscopy and preferences for SMS communication. Content analysis using codes representative of the health belief model and prospect theory constructs were applied to qualitative data. Results. Thirteen CRC survivors reported individual-, interpersonal-, and system-level barriers to surveillance colonoscopy completion. Participants were receptive to receiving SMS reminders to mitigate these barriers. They suggested that reminders offer supportive, loss-framed messaging; include educational content; and be personalized to communication preferences. Finally, they recommended that reminders begin no earlier than 9 months following CRC surgery and not include response prompts. Conclusions. Our study demonstrates that CRC survivors perceive SMS reminders as an acceptable, valuable tool for CRC surveillance. Furthermore, there may be value in integrating theoretical frameworks to design, implement, and evaluate SMS interventions to address barriers to CRC surveillance. As physicians play a key role in CRC surveillance, provider- and system-level interventions that could additively improve the impact of SMS interventions are also worth exploring.

Two-Way Short Message Service (SMS) Communication May Increase Pre-Exposure Prophylaxis Continuation and Adherence Among Pregnant and Postpartum Women in Kenya

We evaluated a 2-way short message service (SMS) communication platform to improve continuation of pre-exposure prophylaxis (PrEP) for HIV prevention among Kenyan women who initiated PrEP within routine maternal child health (MCH) and family planning clinics. We adapted an existing SMS platform (Mobile WACh [mWACh]) to send PrEP-tailored, theory-based SMS and allow clients to communicate with a remote nurse. Women who did not have HIV and who were initiating PrEP at 2 MCH/family planning clinics in Kisumu County, Kenya, from February to October 2018, were offered enrollment into the mWACh-PrEP program; SMS communication was free. We evaluated acceptability, satisfaction, and implementation metrics. In a pre/postevaluation, we compared PrEP continuation at 1-month postinitiation among women who initiated PrEP in the period before (n=166) versus after mWACh-PrEP implementation, adjusting for baseline differences. Of the 334 women who were screened for enrollment into the mWACh-PrEP program; 193 (58%) were eligible and of those, 190 (98%) accepted enrollment. Reasons for ineligibility (n=141) included no phone access (29%) and shared SIM cards (25%). Median age was 25 years (interquartile range=22-30), and 91% were MCH clients. Compared to women who initiated PrEP in the month before mWACh-PrEP implementation, women who enrolled in mWACh-PrEP were more likely to return for their first PrEP follow-up visit (40% vs. 53%; adjusted risk ratio [aRR]=1.26; 95% confidence interval [CI]= 1.06, 1.50; P=.008) and more likely to continue PrEP (22% vs. 43%; aRR=1.75; 95% CI=1.21, 2.55; P=.003). Among those who returned, 99% reported successful receipt of SMS through the mWACh-PrEP system and 94% reported that mWACh-PrEP helped them understand PrEP better. Concerns about PrEP use, how it works, and side effects accounted for the majority (80%) of issues raised by participants using SMS. Two-way SMS expanded support for PrEP and opportunities for dialogue beyond the clinic and enabled women to ask and receive answers in real time regarding PrEP, which facilitated its continued use.

Django Framework and Python-Gammu as Middleware SMS Broadcast

Because the growing of mobile technology in recently days, technology practitioners are required to be able to create a variety of devices and media that support the mobile technology. Application developers compete to create mobile applications that have a variety of features, including video call, voice sending, image sending or text messaging. Developing of mobile applications have an impact on using of Short Message Service, although using of Short Message Service began to shift, but the Short Message Service feature cannot be abandoned, because Short Message Service is a standard feature carried by mobile devices (mobile phones). For this reason, we need to develop Short Message Service Broadcast middleware as an intermediary for Short Message Service communication between web technology and mobile devices. This technology is using for disseminating information between systems that have been built with mobile devices via Short message service. Broadcast system will produce information about new student admissions, That will be received directly by Senior High School Students through their mobile phones. The Middleware can send message broadcast in real time to more than 500 cellular numbers automatically with an average time of 13 seconds for one message. The advantage of using this technology is direct configuration with Python Back-End. Meanwhile, Technology for message inbox still requires further configuration.

Short message service communication improves exclusive breastfeeding and early postpartum contraception in a low- to middle-income country setting: a randomised trial.

To assess the effect of short message service (SMS) communication on facility delivery, exclusive breastfeeding (EBF), and contraceptive use. Mobile WACh was a three-arm unblinded individually randomised controlled trial. A public sector maternal child health (MCH) clinic in Nairobi, Kenya. Three hundred women attending antenatal care were randomised, 100 to each arm, and followed for 24 weeks postpartum. Pregnant women, at least 14 years old with access to a mobile phone and able to read SMS were eligible for participation. Women were randomised (1:1:1) to receive one-way SMS versus two-way SMS with a nurse versus control. Weekly SMS content was tailored for maternal characteristics and pregnancy or postpartum timing. Facility delivery, EBF, and contraceptive use were compared separately between each intervention arm and the control arm by Kaplan-Meier analysis and chi-square tests using intent-to-treat analyses. The overall facility delivery rate was high (98%) and did not differ by arm. Compared with controls, probability of EBF was higher in the one-way SMS arm at 10 and 16 weeks, and in the two-way SMS arm at 10, 16, and 24 weeks (P < 0.005 for all). Contraceptive use was significantly higher in both intervention arms by 16 weeks (one-way SMS: 72% and two-way SMS: 73%; P = 0.03 and P = 0.02 versus 57% control, respectively); however, this difference was not significant when correcting for multiple comparisons. One-way and two-way SMS improved EBF practices and early contraceptive use. Two-way SMS had an added benefit on sustained EBF, providing evidence that SMS messaging influences uptake of interventions that improve maternal and neonatal health. Funding was provided by the National Institutes of Health (K12HD001264 to JAU, R01HD080460, K24HD054314 to GJS, and K01AI116298 to ALD), the National Science Foundation (Graduate Research Fellowship to TP and BD), as well as the University of Washington Global Center for Integrated Health of Women Adolescents and Children (Global WACh). The Mobile WACh RCT demonstrates that SMS improved practice of exclusive breastfeeding and early postpartum contraception.

Development of an SMS-Based Prepayment Energy Meter Monitoring System for Consumers and Utility Companies

In this paper, a Short Message Service (SMS) Based Prepayment Energy Meter Monitoring System for Consumers and Utility Companies is developed. This is borne out of the desire of consumers to be able to monitor their meters especially their consumption. Also, the utility companies need to be able to monitor energy meters wirelessly especially for energy auditing and other control as may be needed. The Energy Meter consists of ADE7755 for consumption pulse measurement which is recorded by arduino Atmega328P. The recorded pulses are sent to Atmega2560, the main controller of the system on its request for update every second. This controller also manages unit according to consumption and other activities of the meter. It is made SMS capable by interfacing Atmega2560 with SIM900 Global System for Mobile Communications (GSM) module. The system also has a server consisting of Atmega328P and SIM900 GSM module that enables the utility company to access the meter. The server is interfaced to a PC which is used for management and administrative Platform. The SMS communication command is developed in C++ to achieve the monitoring functionality of the metering system. The SMS duration test shows a mean time of 32.7s with a standard deviation of 13.71. The SMS Command Reliability Test carried out shows a success rate as high as 100% and the highest failure rate of 5.88%. The results obtained show that GSM-Based SMS is a good platform for energy meter monitoring.

Use of Short Message Service and Smartphone Applications in the Management of Surgical Patients: A Systematic Review.

Mobile health and telemedicine are rapidly evolving fields used to provide healthcare remotely to patients. For surgical patients, telemedicine can improve patient education and remote monitoring of postoperative symptoms. We performed a systematic review of studies involving the use of short message service (SMS) and mobile application-based interventions in surgical patients to evaluate the advantages and disadvantages of each system, as well as of mobile interventions as a whole. Major electronic databases were searched using relevant keywords from inception until November 2016. Studies involving SMS or mobile application-based communication protocols involving at least 25 preoperative or postoperative patients were included. Studies of systems involving communication exclusively between healthcare professionals were excluded. A total of 2,492 unique studies were identified through keyword search. After applying inclusion and exclusion criteria, 15 studies were included in this review. Intervention modalities were SMS (8 studies), mobile application (4), combined SMS and application (1), automated phone call (1), and electronic transmission of pictures to the physician (1). Intervention methods were symptom monitoring (7), patient education (2), protocol adherence reminders (4), and combined symptom monitoring and protocol adherence reminders (2). Both mobile applications and SMS-based interventions increased adherence to medications and protocols and improved clinic attendance. Lower readmission rates and emergency room visits were reported. Satisfaction with automated communication systems was high for both patients and physicians. Mobile interventions provide a sophisticated yet simple tool to improve perioperative healthcare. Future considerations to address include usage fatigue and Health Insurance Portability and Accountability Act compliance concerns.

Acquisition and Analysis of Electrocardiogram Waveforms with Diagnosis Transmission through Short Message Service Communication System

Acquisition and Analysis of Electrocardiogram Waveforms with Diagnosis Transmission through Short Message Service Communication System

Jezik SMS-jev in SMS-komunikacija

V prispevku predstavljamo SMS (angl. Short Message Service) kot vsesplošno razširjeno komunikacijsko sredstvo. Kaj danes pomeni pismenost, smo se prepričali na primeru SMS-komunikacije, ki predstavlja pomemben del našega vsakdana. SMS-ji nadomeščajo tako govorjena kot tudi pisana besedila in so lahko del neuradne ali uradne SMS-komunikacije. Svetovni splet, sleng, vsestransko prodirajoča angleščina ter omejitev na 160 znakov so odločilno vplivali na nastanek novega koda – jezika SMS-jev. Predstavljeno je tudi, kolikšen vpliv imajo na pisanje SMS-jev najrazličnejši poskusi standardizacije jezika SMS-jev.

Nigerian Teachers Perception on the Use of ‘SMS Communication on Students’ Conventional Writings

The newly invented short message service (SMS) communication occasioned by the emergence of mobile telephones is a new phenomenon in communication. This form of communication oftentimes disregards the basic rules of English grammar especially among youths and this has raised a major worry for the society in recent times. This concern is that SMS communication is gradually taking over written communication and indirectly jeopardizing students’ usage of the Standard English language in their academic writings. Within this context therefore, this paper investigates Nigerian teachers’ perception of the pervasiveness of the SMS language among students and how this form of communication is jeopardizing students’ formal academic writings. A survey was carried out among the teachers in the six zonal headquarters of Post Primary School Service Commission (PPSSC) in Anambra State, Nigeria. A sample of 400 teachers was randomly selected. Two schools were randomly sampled from each zone making twelve schools, and about 33 teachers were sampled from each school. Findings show that teachers are aware students use SMS communication because they observe that it filters into their academic writings, particularly in written examinations. The study also identified that the form of SMS language commonly used among students is replacing words with alphabets such as ‘U’ in place of ‘You’. Based on the findings, the study concludes that SMS language in communication is very detrimental to the students’ academic writings and recommends that students who use the SMS language in their written examination should be strictly penalized. Keywords : Short Message Service; SMS communication; Teachers’ Perception; Text messaging; academic writings, Nigeria.

Quantitative Safety Assessment Based on Risk in Level-Crossing between Railway and Highway

In this paper, a portable integrated ship monitoring command system is designed to meet the needs of automatic maritime security working, remote monitoring and commanding ship, while adapting the harsh working environment. The propose ship monitoring command system has merits of ease of installation, highly-integrated features, easy-to-use, and so on. Application of Beidou Navigation Satellite System's high precision positioning and SMS(Short Messaging Service) communication technology in integrated ship monitoring command system can well solve the problem of ship navigation and positioning, remote monitoring and commanding. In our system, ECDIS( Electronic Chart Display and Information System) is chosen as the display platform, HF(High frequency), VHF(Very high frequency) and Beidou is chosen as the communicational measure, Beidou and GPS is chosen as the positioning measure. With the help of the above measures, the static and dynamic data of ship, real-time voice and text are transported to realize the function of ship positioning, ship navigation, remote monitoring and commanding.

SMS-based Remote Computer Supervisory Control System Design

Short message service (SMS) is a technology that can use mobile devices to send and receive text message, with wide coverage area, high popularity, high reliability, low expenditure, easy development and other characteristics. Using GSM module or short message platform of network, short messages can be sent and received between the computer and the mobile terminal. This paper has designed and realized a set of remote computer supervisory system based on SMS communication. The paper elaborates the communication means, hardware and software structure of the system and the working process of the software. The system has good application prospect in some domains, such as remote control, mobile control, miniature control, etc.

Current mHealth technologies for physical activity assessment and promotion.

Novel mobile assessment and intervention capabilities are changing the face of physical activity (PA) research. A comprehensive systematic review of how mobile technology has been used for measuring PA and promoting PA behavior change is needed. Article collection was conducted using six databases from February to June 2012 with search terms related to mobile technology and PA. Articles that described the use of mobile technologies for PA assessment, sedentary behavior assessment, and/or interventions for PA behavior change were included. Articles were screened for inclusion and study information was extracted. Analyses were conducted from June to September 2012. Mobile phone-based journals and questionnaires, short message service (SMS) prompts, and on-body PA sensing systems were the mobile technologies most utilized. Results indicate that mobile journals and questionnaires are effective PA self-report measurement tools. Intervention studies that reported successful promotion of PA behavior change employed SMS communication, mobile journaling, or both SMS and mobile journaling. mHealth technologies are increasingly being employed to assess and intervene on PA in clinical, epidemiologic, and intervention research. The wide variations in technologies used and outcomes measured limit comparability across studies, and hamper identification of the most promising technologies. Further, the pace of technologic advancement currently outstrips that of scientific inquiry. New adaptive, sequential research designs that take advantage of ongoing technology development are needed. At the same time, scientific norms must shift to accept "smart," adaptive, iterative, evidence-based assessment and intervention technologies that will, by nature, improve during implementation.

Integration of Beidou and GPS in Vessel Monitoring System

A novel method has been proposed for integrated Beidou and GPS (Global Positioning System) navigation system in vessel monitoring system. Application of integrated Beidou and GPS navigation system's high precision positioning and SMS (Short Messaging Service) communication technology in vessel can well solve the problem of vessel navigation, positioning, remote monitoring and commanding. Based on 27 stations of Crustal Moment Observation Network of China, satellite visibility and availability of integrated Beidou and GPS are calculated and analyzed in detail. A data compression algorithm is proposed for Beidou SMS communication technology to get the continuous location and other state of the target vessel. Experimental results reveal that the integrated Beidou and GPS system is superior to any single system in all respects of positioning performance.

Design and Implementation of Remotely- Monitored Single Phase Smart Energy Meter via Short Message Service (SMS)

This paper focuses on the design and implementation of a single phase energy meter with remote monitoring capacity using shortmessage service (SMS). The energy meter was designed using ADE7755 metering chip and other discrete components. The SMS communication with the meter was established with the aid of Neoway M590 GSM module; AT-commands are sent to the GSM module from a mobile phone for communication. Also, a 4x3keypad was employed for loading energy tokens and obtaining energy information from the meter; the energy data (query) is then viewed on the liquid crystal display unit. The project was implemented on a locally- made single layer printed circuit board with the aid of Diptrace software. Simulation of the electronic circuit designs was carried out using Proteus software, 8051 development kit and a serial port monitor. Results obtained show that the energy meter is capable of measuring instantaneous and average real time power consumed while being remotely monitored and queried. The energy meter has a capacity of measuring minimum and maximum loads of 2mA and 40A respectively.

The effect of weekly short message service communication on patient retention in care in the first year after HIV diagnosis: study protocol for a randomised controlled trial (WelTel Retain)

IntroductionInterventions to improve retention in care after HIV diagnosis are necessary to optimise the timely initiation of antiretroviral therapy (ART) and HIV/AIDS control outcomes. Widespread mobile phone use presents new...

CDMA 모뎀을 이용한 원격 제어 및 계측 시스템 구현

본 논문에서는 CDMA 데이터 모뎀을 이용하여 원격에서 다양한 입출력 장치들의 상태를 계측하거나 이들을 제어하는 시스템을 설계하고 개발한다. 그리고 TCP/IP 패킷 통신과 단문자서비스(SMS) 통신방식을 이용하여 공인 IP 주소를 갖지 않는 CDMA 모뎀 장치들을 위한 양방항 데이터 통신 방식을 제안한다. 설계된 원격 제어 및 계측시스템은 DCE로 Telit WM-800 모뎀과 DTE로서 Atmel AT89C51 마이크로컨트롤러를 사용하여 구현되었다. 제어 및 계측 시스템 사용자를 위한 사용자 응용 프로그램, 그리고 디지틀 입출력 장치, AD/DAC, LCD, 및 온습도 센서 등의 펌웨어 구동장치 프로그램은 보다 다양한 종류의 응용을 위하여 각각 Microsoft C 및 Keil C 언어를 사용하여 작성되었다. 본 논문에서 구현된 제어 및 계측 시스템의 실험결과는 실제 실시간 실험을 통해, 설계된 바와 같이 사용자가 원하는 동작을 정확하게 수행하는 것을 확인하였다. This paper deals with the design and development of the remote control and measurement systems using CDMA(Code Division Multiple Access) data modem. We propose a bi-directional data communication link without the public IP address in CDMA modem device by the TCP/IP packet and SMS(Short Message Service) communication. The remote control and measurement systems are implemented by a Telit WM-800 modem as DCE(Data Communication Equipment), and Atmel AT89C51 microcontroller as DTE(Data Terminal Equipment). The user application software for the control and measurement system user, and the firmware software of device drivers for peripherals such as a digital input/output device, AD/DAC(Analog to Digital/Digital to Analog Converter), LCD, and temperature/humidity sensor are written in Microsoft C and Keil C language respectively for further various applications. The experimental result of the proposed control and measurement systems implemented in this paper is evaluated via real-time experiments, which works well as designed.