RAD Data comm IPmux-1 - Manual (Page 39)

IPmux-1/1E Installation and Operation Manual Chapter 2 Installation
Installation and Setup 2-3
IPmux-1E
The IPmux-1E FXS version needs NO user internal jumper configuration.
The IPmux-1E ISDN version contains jumpers for phantom feed (see Figure 2-1).
Open the case and check the positions of internal jumpers before the IPmux-1E
installation.
➤
To open the IPmux-1E case:
1. Disconnect all the cables connected to the IPmux-1E.
2. Release the cover screws at the rear panel (one is near the POWER connector).
3. Slide the IPmux-1E top cover by pulling it straight out.
➤
To set the IPmux-1E ISDN-S module jumpers:
If necessary, change the settings in accordance with the specific requirements of
your application:
• ENA – enable phantom feed
• DIS – disable phantom feed
The phantom feed ENA/DIS setting influences the IPmux-1E BRI operation mode.
When phantom feed is disabled, the S interface can be configured (through
software) to the TE or NT mode. When phantom feed is enabled, only the NT
mode is possible.
Only qualified and authorized service personnel should have access to the
inside of the unit.
Disconnect the unit from the power line and from all the cables before
removing the cover.
Line voltages are present inside IPmux-1E when it is connected to power.
Moreover, under certain external fault conditions, dangerous voltages may
appear on the lines connected to IPmux-1E.
Any adjustment, maintenance, and repair of the opened device under voltage
should be avoided as much as possible and, when inevitable, should be
carried out only by a skilled technician who is aware of the hazards involved.
Capacitors inside the device may still be charged even after it has been
disconnected from its source of power.
The IPmux-1E contains components sensitive to electrostatic discharge (ESD). To
prevent ESD damage, avoid touching the internal components, and before moving
jumpers, touch the IPmux-1E rear panel.
Caution
Warning
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