Basic CPU Board

The basic CPU board carries only the main CPU, which supports all basic features of the gateway (web interface, 2N® SIM Star support, SMS). The advanced features of the enhanced version (SMS2Outlook, SNMP, SMS/Call simulator) are not available.

Board Description

The CPU board contains a processor system controlling the whole system. The board is designed on a 4-layer PCB of the size of 160x100mm. A simple COM1 serial interface, an Ethernet connector (100Base-T) and 5 board status LED indicators are located on the front panel.

 

 

  1. Indicates board supply; the LED is green if the gateway is powered on and shows no malfunction.
  2. Indicates board initialisation or malfunction.
  3. Indicates CDR memory (not shining = empty; flashing 1:1 = 50% full memory; shining = 100% full memory).
  4. 1st serial interface of the basic CPU.
  5. 10BaseT Ethernet connection of the basic CPU. 

COM1 Serial Interface Parameters

The COM1 interface is used as a local port for temporary connection of a PC (terminal) for installation and servicing purposes and permanent connection of the SMS server (supervision PC). It provides local monitoring, configuration, tracing and firmware upgrade. 

  • Transmission rate: 57.6 kbps
  • Bit format: start, 8bit, stop (no parity)
  • Signals: RXD, TXD, RTS, CTS, GND 


Configuration Jumpers

The figure below shows the CPU configuration jumper. The JP1 jumper can be connected in one of the following three positions.

  • CPU – COM1 communication port is active for communication with the CPU.
  • eCPU – COM1 communication port is active for communication with the eCPU.
  • DEF – used for CPU default reset.

 

 

Figure: Configuration Jumpers