User manual

Explanatory Notes

1. LED indicators

2. TL1 - Reset pushbutton

3. Lithium battery in holder

4. SIEMENS

GSM module TC35 or MC35

5. Mains transformer

6. PSTN line transformer

7. BJ1 - 2 x 10,000 A surge arrester – PSTN line first stage overvoltage protection

8. X6 – PBX line RJ-12 connector

9. X1 – PSTN line RJ-12 connector

10. X7 – mains supply connector

11. J2 – RS-232C serial interface connector

12. P1 - Mains fuse – T 200 m A

13. JP1 - diagnostic connector of power part

14. U16 – EEPROM containing GSM Gateway programmed parameters

15. X8 - diagnostic connector of digital part

16. U10 – main micro controller in the socket

17. X9 – SIM card holder

18. Antenna connector

Notes:

• The main microcontroller can be removed with a specialized tool only. Usually, it is not

necessary because the microcomputer can be reprogrammed in the GSM Gateway. Using

another tool may cause damage to or destroy the PCB!

• The main microcontroller contains a serial number of GSM gateway as well as a protected

code. If erased by a programming tool unlike GSM program, it will not work and these data

cannot be re-programmed by GSM program again!