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Based upon the technology of PHS, Model KT26 PHS Wireless Dispatching and Communication System for Mine is a multi-function wireless communication system specially developed for the requirements of underground working environment and safe production. The system can make the wire and wireless telephones into an integrated network and uniformly make up phone codes, and realize uniform dispatching and commanding for fixed and mobile users in mine area. The system also can combine the networks of mobile communication of mine area and public together. |
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Mutual calling and communication between outer telephone and mobile phone or fixed telephone in the system. |
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Mutual calling and communication between mobile phones or between mobile phone and fixed telephone in the system. |
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Mutual SMS or group SMS among mobile phones of the system. |
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Have function of locating the mobile phone. |
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Have function of maintenance and management by equipping system maintenance terminals. |
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Have function of dispatching and group calling, force-cut, force-insert and conference for the wireless users and fixed users. |
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The mobile phone has long idle time up to 150 hours. |
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Through anti-flaming twisted cable, ISDN digital transmission between basestation controller and basestation can be realized and remote power supply for basestation can be also provided. |
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Cabled user can connect with KTH8 I.S. automatic telephone underground through KTA7 mine-used safety coupler. |
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System Capacity
Total capacity of the system is 1712 phones.
Dispatch capacity is 32 256(wire and wireless) phones and it is extendable.
Trunk capacity is 40 of E1 trunk interface and 128 of line loop trunk; Each E1 interface can connect with a basestation controller.
Each basestation controller can connect with 16 bastations. |
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Transmission Distance
E1 interface transmission: 15km.
U interface transmission: 3km.
Covered range of wireless signal of the basestation  200m, the mobile phone can realize wireless communication in the range. |
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Wireless Parameters
Radio Frequency: 19001915 MHz.
Carrier Interval: 300 kHz
Multiplex Mode: TDMA/TDD.
Multiplex Air Channel: 4.
Modulation Mode: ¦Ğ/4-QPSK.
Signal Transmission Rate: 384 kbit/s.
Voice Coding: ADPCM 32 kbit/s.
Radio Frequency Power: Mobile phone 10 mW, underground basestation 20 mW, surface basestation 40 mW, 200 mW, 500 mW. |
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