HOWTO: SX2 DualPRI ISDN board configuration (kb3163)

The information in this article applies to:

• SX2 DualPRI

[ Summary | Information ]

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Summary

Summary

The ISDN board SX2 DualPRI needs to be configured before first use. This article gives an overview about the possible configurations.

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Information

Information

Before the SX2 DualPRI card is installed into the machine you have to configure the RJ-45 socket pinout and the line termination.

The following description assumes you have the card in front of you with the RJ-45 sockets on the left side and the PCI connector pointing in your direction. Each RJ-45 socket has two jumper blocks assigned. Throughout this description the jumper block containing 2 jumpers is named JB2 and that one containing 5 jumpers is named JB5. A suffix L or R means that either all jumpers are on the block's left side (L) or on the right side (R) e.g. JB5L means that all jumpers of JB5 are jumpered to the left side.

RJ-45 Socket Pinout

The RJ-45 socket pinout can be changed with jumper blocks JB2 and JB5. It is possible to chose out of 4 different pinouts:

Jumper Block Assignment	RJ-45 Socket Pinout
JB2L and JB5R	Pin1 = TX+ Pin2 = TX- Pin4 = RX+ Pin5 = RX-
JB2R and JB5R	Pin3 = TX+ Pin6 = TX- Pin4 = RX+ Pin5 = RX-
JB2L and JB5L	Pin1 = RX+ Pin2 = RX- Pin4 = TX+ Pin5 = TX-
JB2R and JB5L	Pin3 = RX+ Pin6 = RX- Pin4 = TX+ Pin5 = TX-

Configuration Line Termination

On the right side beneath the jumper blocks you'll find a DIP switch with two pins. This switch is used to select the line termination. If both pins are "OFF" then no termination is present. If the left pin is "OFF" and the right pin is "ON" a 120 Ohm termination is active. If the left pin is "ON" and the right pin is "OFF" a 75 Ohm termination is active.

PCI-bus power settings

On the board's lower right side you see a jumper with three pins. Make sure that the jumper is set to position "3V3 reg".

Interrupt assignment configuration

In the middle of the board you see a jumper with three pins. Make sure that the jumper is set to the left position.

Board number configuration

The board number can be set with the 4 DIP switches located at the upper middle side of the board. The following assignment is valid:

Switch 1	Switch 2	Switch 3	Switch 4	board number
off	off	off	on	1
off	off	on	off	2
off	off	on	on	3
off	on	off	off	4
off	on	off	on	5
off	on	on	off	6
off	on	on	on	7
on	off	off	off	8
on	off	off	on	9
on	off	on	off	10
on	off	on	on	11
on	on	off	off	12
on	on	off	on	13
on	on	on	off	14
on	on	on	on	15
off	off	off	off	automatic

Please make sure that you either assign a board number for all boards in the system or configure all boards for automatic number assignment.

PCM bus connection

The board provides two connectors with 20 pins each. Those connectors are used to connect two boards with an optional PCM cable. The upper connector is the output and the lower connector is the input. Connect two boards with a PCM cable by connecting the output of the first board with the input of the second board.

LED Status Monitoring

Each E1 socket has assigned four monochrome LEDs as a status monitoring facility.

The following assignment is valid:

LED1 off:	Layer 1 de-activated
LED1 red:	Layer 1 activated
LED2 green:	Layer 2 activated
LED3 green blinking:	At least one connection active
LED4 red blinking:	The line is being configured

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Updates

Created: 24.08.2006, Last Modified: 16.02.2007

• 25.08.2006: target audience broadened
• 25.08.2006: Pictures added
• 16.02.2007: Added note for board number assignment.