Avaya 03-300686 manual Physical requirements and layout, Installation space requirements

Chapter 2: Installing the main distribution frame

If the equipment room does not have one, you must build a main distribution frame (MDF) that connects the media gateways to the building phone network and to the public switched telephone network (PSTN). The tasks include the following:

●Physical requirements and layout on page 13

●Main distribution frame hardware installation on page 17

If the installation will use a patch panel rather than a main distribution frame, use the procedures in Chapter 3: Installing the patch panel on page 29.

Physical requirements and layout

Before installing the MDF and other equipment in the equipment room, ensure that there is adequate space and there is a plan for placing the equipment.

Installation space requirements

Make sure there is adequate space for the following pieces of equipment:

●Sneak fuse panels and emergency transfer units on page 13

●110-type hardware on page 13

●Cable Slack Manager on page 14

Sneak fuse panels and emergency transfer units

You need about 8 inches (20 centimeters) of horizontal wall space for each column of sneak fuse panels. Horizontal wall space must also be provided for emergency transfer units.

110-type hardware

The trunk/auxiliary field and the distribution field are mounted on the same wall. Each 110P-type terminal block is 8.5 inches (21.6 centimeters) wide. Vertical patch cord troughs are 5.31 inches (13.4 centimeters) wide and horizontal patch cord troughs are 23 inches (58.4 centimeters) wide.

Each 110A-type terminal block is 10.8 inches (27.4 centimeters) wide; however, no horizontal patch cord troughs are used and the blocks are shorter than 110P-type terminal blocks. This allows the 110A-type terminal blocks to be stacked. Therefore, the 110A-type hardware requires less space than the 110P-type hardware on a per-station basis.

Issue 3 January 2008 13