Samsung iDCS 500 Manual page 29

3-28 Chapter 3
Installing Printed Circuit Cards
IP TELEPHONY MODULE (ITM3)
The iDCS 500 system supports the VoIP feature using the ITM3 card. The ITM3 card is equipped with
8 VoIP ports that can be increased to 16 by the addition of the ITM3D daughter card. Two 40 pin
connectors on the ITM3 card support the connection of the ITM3D daughter card. Refer to the
diagram below.
The ITM3 card is installed in any universal card slot of any cabinet. Insert the ITM3 card into the card
guide and slide the card until it makes contact with the back plane connector. Press firmly on the top
and bottom of the card to ensure it is fully inserted into the back plane connector.
The ITM3 card takes approximately 3 minutes to initialise and during this time the relevant slot LED
on the MCP/SCP/LCP card will flicker (100msec ON/OFF). At the end of the ITM3 card initialisation
the slot LED will turn off.
The ITM3 card has a recessed RESET button that will initialize the ITM3 card manually if required.
The RS232 DB 9 connector on the face of the ITM3 card allows trace monitoring of the ITM3 functions.
This is used for testing purposes and only to be used under the supervision of Samsung Technical
Support.
The operation of the ITM3 card LEDs is described below.
There are no switches or jumpers on the ITM3 card, which require setting.
LED Name
PWR
SW1
TX
RX
RUN
SW2
SW3
SW4
This LED is ON when +3.3 volts power is applied to ITM3 Card.
This LED is ON when S/W task for H323 stack is operates.
This LED is ON when TX data is valid on only 100M Ethernet port. So it is OFF to be
connected to 10M Ethernet port.
This LED is ON when RX data is valid on both 10M and 100M Ethernet port.
This LED is connected the address Bus(8) pin of CPU. So it is ON when CPU is
running. The faster CPU operates, the brighter LED is.
This LED indicates a processing state for voice packeting in Call.
This LED is ON when call service is ready.
This LED is flicker at a low rate to indicate O.S task in Software running.
Function