2. Austdac Pty Ltd has been in the business of manufacturing hazardous area communications, monitoring, and control equipment since 1983. Today it is one of Australia’s largest suppliers of communications, gas monitoring, I.S. lighting and conveyor control equipment to Australian coal mines and general industry. With over 25 fully installed mine wide gas monitoring systems. Over 1000 conveyor monitoring and control systems both in Australia and worldwide. Over 70 longwall monitoring and control systems in Australia and overseas. Additionally Austdac now forms part of the Hubbell Industrial Technology segment and will continue to trade as Austdac Pty Ltd. The Industrial Technology segment also contains the GAI-Tronics group which specializes in equipment for electrical and electronic Harsh and Hazardous areas including industrial phones, oil and gas, coal and other mining areas. Austdac Company Profile

3. SYDNEY MACKAY more than 100 employees Austdac Offices in Australia EMERALD PERTH

4. USA AUSTDAC OFFICE UK AUSTDAC OFFICE INSTALLATIONS AROUND THE WORLD

5. Austdac Communication IS Telephone System ST2 barrier type and A103 telephone

6. After 30 years of the current ST1 barrier system, Austdac has designed a new modern barrier The ST2 barrier is more compact only requiring a 6 RU high shelf kit assembly and only 35mm wide Uses the latest digital technology in speech and gain control, software controlled The ST2 barrier comprise of two single telephones circuits in the one housing similar to the ST1 type but smaller in volume LED indication of the front panel show that the barrier is operational, detection of an Emergency Call, and Line Status, connection of a phone Hot swappable while fully powered PCB backplane for greater reliability In the event of a complete power failure there is a Emergency phone connection of front panel IS telephone system

7. Single rack shelf with capacity up to 10 barriers 20 phones * This photo shows 7 barriers 14 phones New Interface rack shelf

8. Max line length of 10 to 13 Kms 2 to 3 phones in party line connection Increased capacity 80 phones in a single 2000 high rack No limit to the max number of shelf kits per system additional racks required Software controlled maintenance package, shows current drawn, voltage, phone in use, emergency call, missing phone IS Telephone System ST2

9. New ST2 barrier

10. New 103 phone

11. Typical rack layout Showing the capacity up to 80 barriers including UPS

12. BMA Manager Exchange

13. PC based graphical user interface (GUI) The software will work on any windows XP or Windows 7 personal computer The GUI can display over 30 lines on one page The BMA exchange is designed to detect the Call Exchange tone sent from the BMA station to the surface via the surface pair BMA Exchange

14. Once the call exchange tone has been detected the operator telephone or desk top station will ring The operator answers the call by lifting the handset To clear the call return the handset to the cradle BMA Exchange

15. Typical block diagram

16. Remote BMA exchange