Intelligent systems for monitoring telecommunication equipment parameters are especially useful in the case of locations that are not under human surveillance. The monitoring system described in our paper is a general one, but it can be adapted and implemented to monitor the specific parameters of equipment utilized in various fields, such as: medicine, agriculture, energetics, chemical industry, etc. In this paper we present the development of both architecture of the device and the specific software applications for such system. Monitoring systems of analogue and digital signals with Ethernet transmission consist of Devices Analyzing Input Signals (DAIS) and sensors. The main parts of the DAIS system are: printed circuit board, equipped with an industrial microcontroller, an Ethernet transceiver, resistors, capacitors and connectors. The software running on the microcontroller is developed in ANSI C (American National Standards Institute). It includes the C and C ++ GCC compiler (GNU Compiler Collection), an assembler and a simulator that facilitates application development and testing. The alarm monitoring and control application can be run from any electronic computing device equipped with an operating system using TCP/IP and has a browser that supports Java-Script. The web application is designed for reading the values displayed by the DAIS system, interprets and show them in a format accessible to browsers. In case of detecting any errors, the application puts the device in the “Alarm List” and sends a warning sound to the dispatch staff, directly from the browser. The detailed records on DAIS system reported values are nonstop monitored and stored in a database, with the possibility of graphic display of all values up to a maximum of one year. Thus, parameters can be monitored, including main feed voltage, backup voltage, the external temperature of the equipment cabinet, internal temperature, relative humidity inside the cabinet, smoke sensor(s), the state of access door(s) to the cabinet, etc. Likewise, we sought to increase productivity and obtain an energy-efficient device that does not require maintenance, proposing a software solution for the management of processes being executed on the microcontroller, so that it is as customizable as possible using a web interface. The DAIS system is also an economical one, significantly less expensive than other systems existing on the market.