Karel GT10 Technical Reference And User's Manual
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Karel GT10 Technical Reference And User's Manual

Karel GT10 Technical Reference And User's Manual

Karel gsm gateways technical reference and user's guide
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20
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20
GSM GATEWAY
TECHNICAL REFERENCE AND USER'S GUIDE

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  • Page 1 GSM GATEWAY TECHNICAL REFERENCE AND USER'S GUIDE...
  • Page 2 TECHNICAL REFERENCE AND USER’S GUIDE REV A GSM GATEWAY...
  • Page 3 ♦ Make sure the upper screw by which the exchange will be hanged is at least 150 cm. above the floor. Since GT20 and GT10 GSM Gateways are electronic-based systems they contain modules that carry high voltages, which could adversely affect environmental conditions. In this ♦...

  • Page 4: Table Of Contents

    Chapters in this guide have been prepared in order to present detailed technical GT20 AND GT10 motherboard:..................4 information to people who need hardware-based information about the GT20 and GT10 LED DISPLAY:........................5 GSM Gateways, information about installation of the gateway, settings that could be done through programming and troubleshooting simple problems.

  • Page 5: Technical Introduction

    GT20 can be employed either by being connected to the external lines of any GT10 consists of one GSM module. GT20 has two GSM modules on which you can use the telephone exchange or directly to two telephones.

  • Page 6: Power Supply

    GT20/GT10 turns the 48 VDC it has received from the adaptor to + 5 VDC, -48 VDC and 67 cuits. See the figure below for circuit locations.

  • Page 7: Led Display

    Notes on the LED statuses: • When GT20/GT10 is powered, the leftmost green power LED is turned on. The four LEDs signifying the statuses of channels light in red and green until the PLD on the card is loaded (approximately 20 secs.) •...

  • Page 8: Technical Specifications

    TECHNICAL REFERENCE AND USER’S GUIDE REV A GSM GATEWAY TECHNICAL SPECIFICATIONS Parameter is needed / confirmation tone: 150 ms 500 Hz. It is heard when a parameters needed to be entered or a correct programming action has been taken during programming.

  • Page 9: Installation

    INSTALLATION APPLICATION In order to mount the GT20 GSM Gateway on the wall, the front cover of the gateway should be removed. In order to open the front cover, one should split the front cover from Since GT20 and GT10 are structurally completely the same and only the number of the back one by pressing the latches at both sides of it.

  • Page 10: Ps03 Power Adaptor Connection

    TECHNICAL REFERENCE AND USER’S GUIDE REV A GSM GATEWAY Location of the gateway on the wall is determined through the mounting template When the upper screw has come to the highest point, the lower screw is attached to and screw spots are marked. its slot by turning the lower cover slightly to the right (Figure-10).

  • Page 11: Placing The Sim Cards

    GSM GATEWAY PLACING THE SIM CARDS There is a SIM card slot on GT20 for each GSM module. The SIM cards are attached to these special slots. The illustration below shows locations of the SIM card slots and placement of the cards to these slots.

  • Page 12: Telephone Or Exchange External Line Connection

    GT20 GSM Gateway and GSM network signal level. For that reason, GT20 can be connected over 0.5 mm copper cable at distances up to 2 kms from the primarily, while GT20 is operating, as will be explained in the next chapter, the PIN exchange or telephones.

  • Page 13: Programming

    By entering the programming features specified here through two different analog lines for both modules of GT20, the same or different configurations can be formed for two The module must be taken out of the programming mode, in order to terminate GSM modules.

  • Page 14: Caller Id Information

    Usage of the key # : Resetting Memory Tables: In order to make a call over GT20/GT10, the number to be called is dialed. If no other number is dialed for a certain period, then GT20/GT10 initiates the call with the numbers Parameter changes made on GT20/GT10 can be reset to factory defaults when necessary dialed so far.

  • Page 15: Incoming Voice Level

    Call Initiation Period: Incoming Voice Level: In order to make a call over GT20/GT10, the number to be called is dialed. If no other The incoming voice level can be adjusted for the calls made over GT20/GT10. number is dialed within a certain period, GT20/GT10 initiates the call by using the digits Parameters dialed so far.

  • Page 16: Call Forwarding On Busy

    • If the number of digits is less than 16, then the end of the number can be indicated This program activates that all the calls coming over the GSM module on GT20/GT10 are by the key # . forwarded to another number whenever the module cannot be reached.

  • Page 17: Troubleshooting

    By this way, since the calls are made over the GSM modules on GT20, call tolls will be much less than the calls made over normal lines. On the other hand, when the LCR feature is not used, first of all the extension is supposed to access the lines 01 and 02 and then dial the number.

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