The transmission system alarm messages "Most-P" is intended for fire monitoring objects and monitoring the status of the objective devices at the controlled objects, the transfer of information to the server in the Emergency Fire Monitoring protocol SOS Access V3 through Ethernet. Connection with fire objects is provided in auto dial mode by switched telephone lines (GSM channel)
USP "PACT-2" provides receiving messages from objects that are guarded, using the auto dialer telephone line, and has the ability to connect two phone lines. The device is powered from the USB port of computer or power supply. Time of sending the message from one object to the monitoring station is about 25 seconds.
 Thus, USP "Pact-2" provides the operation in the following autodial protocols:

        Contact - ID;
        Ademco Express, 20BPS 2300/1400 4/2;
        Ademco slow 10BPS in 1400 4/2;
        Franklin 20BPS 2300 4/2.

Digital dialer module  MCA is used  with fire devices "Tiras-P" to send notifications to the Central control  fire monitoring by switched telephone lines in such  protocols as:
        Contact - ID,
        Ademco Express,
        20BPS 2300/1400 4/2.

USP "Pakt-GSM" is used to make notices from the alarm control units in the protocol Contact - ID  by mobile GSM-connection and transfer them to the personal computer  interface (RS232 or USB).
GSM-module is a digital dialer MCA-GSM (a certificate of compliance under the Ministry of Emergency Situations of Ukraine ДСТУ EN 54-21) and is used to set fire to the devices of the series "Tiras-P" to send notifications to the Сentral control fire monitoring in the protocol Contact - ID through the mobile channel  GSM-network.
The maximum number of objects that are guarded will depend on the type and number of communication channels.