Samsung OfficeServ500, Installation Manual

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4-7
IOM Board
This board ( Figure 4-13) has no selectable options and installs in the system main KSU ( Figure
4-14 ). It provides two serial I/O ports. First, install the Modem board, if required (see above).
Then, line the IOM board up with the horizontal card slot above the universal slots and slide it in.
Press gently on the centre of the board’s front panel to seat it and secure the board with the two
screws.
SERIAL I/O PORTS ON IOM BOARD
Default RS-232C port: SIO2, SIO3
Debug: SIO1
Interface Cards
TRUNK B Card
This card ( Figure 4-15 ) has no selectable options. Insert as many Trunk B cards as are needed
into any universal slots ( Figure 4-2 ). Push firmly in the middle of both card ejectors on each card
to ensure that it is fully inserted into the backplane connector.
8TRK Card
This card ( Figure 4-15 ) has no selectable options. Insert as many 8TRK cards as are needed
into any universal slots ( Figure 4-2 ). Push firmly in the middle of both card ejectors on each card
to ensure that it is fully inserted into the backplane connector.
PRI and TEPRI Card
CAUTION: Do not insert the card with system power on. Switch the power OFF.
The TEPRI card ( Figure 4-16 ) installs in slot 1, 2 or 3 of any cabinet. The card supports either E1
or ISDN PRI service. The first set of four LEDs on the front of the card provides the status of the
service (Sync, AIS, Loss and Layer 2 Active states). The second set of four LEDs on the front of
the card displays the type of service. The first TEPRI card installed is the primary source of
external clocking. The second TEPRI installed is the secondary source of external clocking.
Clock selection is first cabinet, left to right, then second cabinet, left to right. The primary and
secondary clock sources should be mounted in the bottom cabinet to ensure stable reception of
clocking from the primary and secondary sources.
There are two RJ-45 modular jacks on the face of the card. The top jack is labelled T1, but is the
socket to use for PRI. The PRI software supports ETSI ISDN only. The bottom RJ45 jack can be
used for E1 connections. The settings for E1 or PRI service are selected by a bank of DIP
switches as defined in the table below.