Multifunction Switch User Guide

Chapter 3 Installation
Avaya M770 M-ACCF/SF ATM Access Modules User’s Guide 41
Power On Self Test
When you power up the Avaya M770 switch with an M-ACC module inserted, both
pass a self test. This check takes between 10 and 20 seconds to complete, and
includes:
— Checksum tests of boot and system areas of Flash memory
— System memory tests
— MAC address verification test
— System timer test
— CAM (Contents Addressable Memory) tests
— Console Port tests
— Internal packet forwarding tests
—ASIC tests
— Module interface tests
— Module packet forwarding tests.
The LEDs used to indicate self-test failure and other post-installation checks are
described in Post-Installation Checks42.
Removing an Existing ATM Access Module
1 Loosen the screws by turning the knobs.
2 Grasp the two knobs one near each side of the front panel, and pull gently but
firmly towards yourself.
3 Insert another module or the blanking plate.