3Com RELEASE 2 installation manual Then

If	Then
The green power light doesn’t go	Test the outlet by plugging in a radio or a
on and the orange light on the	lamp.
power switch also doesn’t go on
The green power light is on, but	The outlet is not functioning, is miswired or
the orange power switch light is	improperly grounded. Have it repaired or use
off .	another outlet.
The green power light is off but	Stop the installation. Turn off the control
the orange power switch light is	unit, unplug it from the ac outlet, and contact
on and the outlet is working	your equipment supplier for assistance.
properly
The red warning light continually	Unplug the power cord and plug it in again.
flashes or remains lit
The red warning light continues to	Set the power switch to Off, and make sure
flash or remains lit	that each module is seated firmly in its slot.
	Then set the power switch to On.
If the red warning light still	Stop the installation. Contact your equipment
continually flashes or remains lit	supplier for assistance.

When the unit is on and only the green power light and orange power switch light remain on, the control unit is working correctly. Before you connect any lines to the control unit, turn the power off.

CONNECT THE OUTSIDE As shown on the label attached to the power module, control unit line jacks

LINES TO THE CONTROL are designated by the letters A through H. The A line jack is the second from

UNITthe top, B is third from the top, C is fourth, and so on. The topmost line jack, the Auxiliary jack, is described under "Auxiliary Line Telephone" in this manual.

Connect the outside lines to the line jacks in an unbroken sequence. If you start with A, for example, the next connection should be B, the next C, and so on. Although any outside line can be connected to any line jack, do not skip jacks once you have begun. If you start with B, the next connection should be C, followed by D, and so on. This simplifies future line administration.

Also, group special line types such as WATS lines together in the sequence, and place personal lines, if any, at the end of the sequence.

You need the following items to connect the control unit to the jacks for your outside lines, whether they appear at the jack field, or at the network interface.

●A completed System Configuration Form (Figure 14)

●A single-pair modular line cord for each outside line

Use a 7-foot cord if the control unit is within 6 feet of the network interface; use longer cords as required for greater distances. Only use one cord length; don’t use extensions.

16Step 1: Installing the Control Unit