Purchasing of "modem" goods for the needs of "magistral water supply"

Purchasing of "modem" goods for the needs of "magistral water supply"
The modem.General characteristics:Wireless GSM,GPRS-modem in combination with external performance antenna, provides data transmission in GPRS network over TCP,IP protocol stack. Modem automatically installs and supports GPRs-connection. Can operate in client or server mode. Ensures transparent interaction between third-party software and external device connected to the modem via RS485. Modem tracks the state of GPR S-connections and, in case of loss, restores the connection itself.CSD; sending SMS-messages to a given number when the connection to the server is lost; different modes of working with the server (always on communication, going out on communication by schedule, call or SMS-command); automatic tracking of the GSM-module and two types of watch timers to protect against dependence; RS485 interface; management of external outcomes on SMS-Commands; sending sms-message to a specified number on signals from external outputs; ease of configuring multiple modems with similar parameters via ATM Control; ability to remotely configure and update embedded software; resistance to failures when updating software; a wide range of operating templates with a compact capability;DIN-rays; the product must be new with a manufacturing period not earlier than 12 months from the date of delivery of the product; the Guarantee period for the delivered product - 12 months after the date on which the transfer receipt act was signed.The modem.
The modem