Special DECT Standard System of Technological Communications

The Goodwin Borodino-I2 system ( see Fig.3) is intended for use on the territories of the enterprises of the mining industry with explosive conditions of manufacture, in collieries and mines with dangerous conditions on gas, dust and sudden emissions; and also on the territories of the enterprises of the fuel and energy complex, the oil and gas industry, the chemical industry, and of the objects with dangerous zones of manufacture.


3.1. The structure of the “Goodwin Borodino-I2” micro cell system in the hardened (explosion-proof) execution.

The structure of the microcell system hardened equipment complex, explosion defense marks and degree of protection against external influences are given in table below:

? Equipment name Symbol of the equipment Explosion defense mark Degree of protection against external influences
1. Central equipment to place in the rack:
1.1 Upn-type spark-proof base station controller BSC-Upn-i2b [Ex nL] IIÂ IP21
1.2 Upn-type spark-proof base station multiplexer BSM-Upn-i2b [Ex nL] IIÂ IP21
1.3 E1-type base station controller BSC-Å1 For general purpose IP21
1.4 Barrier of the power supply line BPSL-2in [Ex nL] IIÂ IP21
1.5 Galvanic decoupling block GDB-i2b For general purpose IP21
1.6 Operator workplace WPO For general purpose IP21
2. Base station and repeater equipment to place in the risk area:
2.1 Upn-type spark-proof base station BS-Upn-i2b 2 Ex nL IIÂ T4 IP65
2.2 Spark-proof base station repeater RBS- i2b 2 Ex nL IIÂ T4 IP65
2.3 Protective casing ??-i2 For general purpose IP67
2.4 Thermo case TC-2b For general purpose IP66
2.5 Explosion-proof electroheater MICROTHERMATECH 75 T3 TS AM 1 Ex dm IIC T3 Õ IP68
2.6 Base cross-polarized antenna 13 dBi 85 grd with fastening SPA-1900/85/13/0/DS 2 Ex nL IIB Ò6 X IP67
2.7 Base cross-polarized antenna 15 dBi 65 grd with fastening SPA-1900/65/15/0/DS 2 Ex nL IIB Ò6 X IP67
2.8 Base cross-polarized antenna 8 dBi 85 grd with fastening SPA-1900/85/8/0/DS 2 Ex nL IIB Ò6 IP67
2.9 Subscriber antenna 8,0 dBi by Huber + Suhner, Switzerland ÀÀ-8.0Ã 2 Ex nL IIB Ò6 IP67
2.10 Base antenna 8 dBi 360 grd SOA-1900/360/8/0/V 2 Ex nL IIB Ò6 IP67
2.11 Base antenna 2 dBi 360 grd SOA-2000/360/2/0/V 2 Ex nL IIB Ò6 IP67
3. Subscriber equipment for the risk area:
3.1 Mobile spark-proof phone MPT-3Ex Ural 0ExiaIICT4X IP54


The central equipment of the system is intended to be placed outside the risk area in a 19-inch rack and it should have power supply from a source of guaranteed power DC -48/60 V manufactured according to requirements of REIO and It consists of:
Base station controller BSC-Upn-i2b (BSC-E1)
Base station multiplexer BSM-Upn-i2b
Protection block of power lines PBPL-2in.
Galvanic decoupling block GDB-i2b
Operator workplace

The hardened central equipment is a set of connected electric equipments and consists of:
Base station controller BSC-Upn-i2b
Base station multiplexer BSM-Upn-i2b
Protection block of power lines PBPL-2in.
The general central equipment consists of:
Base station controller BSC-E1
Galvanic decoupling block GDB-i2b
Operator workplace

The equipment of hardened base stations and repeaters (the base equipment) is permanently installed in dangerous zones, and hardened DECT/GAP mobile radio telephones should be applied as user's devices.
The system stipulates connection of the hardened equipment of base stations and repeaters only to the connected electric equipment. Connection of the general purpose electric equipment to the hardened base equipment is not allowed in the system.


3.2. Base Station Controller (BSC-Upn-i2b) is intended for connection of the telephone system to an automatic telephone exchange and for service of the network of EX base stations. BSC-Upn-i serves up to 16 base stations (BS) with subsequent expansion up to 32 BS.

Technical characteristics:

Interface of connection to an automatic telephone exchange, number of flows/number of channels 1…4 E1/30B+D
Signal protocol of connection to an automatic telephone exchange EDSS1, QSIG
Interface of connection to BS, number of flows/number of channels 16 Upn/2B+D
Ingress protection IP 21
Temperature range, °C +5…+40
Dimensions, mm 483x44x250
Power consumption 25 W
Weight 2.5 kg



3.3. Base station (BS-Upn-i2b) is intended for creating the subscribers service zone in explosive conditions of exploitation.

Technical characteristics:

Interface/ number of channels 1 Upn/ 2B+D
Ingress protection IP 54
Explosion category EEx ia II B T6
Temperature range, °C IP 21
Temperature range, °C -10…+45
Dimensions, mm 222x146x55
Power consumption 4 W
Power Supply 18-72 V DC
Weight 1 kg
Weight 1 kg
Diameter of the connection cable 4.6-7.5 mm
Connection lines 1 signal line,
1 power supply line
Length of connection lines with use of the cable of 0,64 mm Up to 3 km



3.4. Galvanic decoupling block is intended to provide safe connection of the WPO computer to the BSC-E1 or the BSC-Upn-i2b.


3.5. Protection block of power lines (PBPL) is intended to provide remote spark-proof power supply of BS-Upn-i2b and RBS-i2b. Power supply source parameters are 60V/0,1 A.


3.6. Technical characteristics of the system:
  • Explosion category — PO Exia I/OExia IIC;
  • EX Base Stations;
  • EX Handsets;
  • EX Power Supply System;
  • Operation range of the base station — 50-300 m;
  • Number of base stations — up to 96 (with BSC-E1);
  • Signal protocol of connection to an automatic telephone exchange — QSIG or EDSS1;
  • Interface of connection of the base station (BS) to the base station controller (BSC) — Upn;
  • Length of the connection line of BS to BSC — up to 3 km;
  • Opportunity of creating the system of monitoring and personnel registration.


Fig.3. The organization of communication scheme of the Goodwin Borodino-I2



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