Note:
The port labeled AUX is disabled.
- power supply units
- one Kensington Lock slot located on the left side, near the back end of the chassis
The following figure illustrates ERS 4900 Series rear panel.
1. Stack up connector
2. Stack down connector
3. Ports
4. Base Select Switch
5. Power Supply Units
Figure 2: Rear panel
Electrostatic discharge prevention
This module provides information and procedures for the prevention of electrostatic discharge
during the installation process.
Electrostatic discharge (ESD) is a discharge of stored static electricity that can damage equipment
and impair electrical circuitry. These electrostatic voltages can result from friction, including, but not
exclusive to, pulling cabling through conduits, walking across carpeted areas, and building up of
static charge in clothing. ESD damage occurs when electronic components are improperly handled
and can result in complete or intermittent failures. While networking equipment is commonly
designed and tested to withstand common mode ESD events, voltage sometimes can be
discharged to some connector pins but not others, or to some pins before others, which has the
potential to damage the networking equipment.
To protect the Avaya Ethernet Routing Switch against ESD damage, take the following preventive
measures before connecting any data cables to the device:
• Always use antistatic wrist straps. Make sure the strap is adjusted to provide good skin contact.
• Ensure that work surfaces and equipment racks are properly grounded for protection against
electrostatic discharge. The common point must be connected to the building ground wire. In a
properly wired building, the nearest reliable ground is typically at the electrical outlet.
• Avoid contact between equipment and clothing. The wrist or ankle strap only protects the
equipment from ESD voltages on the body; ESD voltages on clothing can still cause damage.
Electrostatic discharge prevention
February 2016 Installing Avaya Ethernet Routing Switch 4900 Series 15
Comments on this document? infodev@avaya.com
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