Board Replacement; Performing Graceful Lock; Removing Boards - AudioCodes Mediant 2000 User Manual

User's Manual
3.4

Board Replacement

Note:
Before removing or replacing boards from the chassis, take this
step:
Attach a wrist strap for electrostatic discharge (ESD) and connect it to the rack
frame using a banana plug or an alligator clip.
Note:
The TP-1610 board is hot swappable and can therefore be removed from a slot (and
inserted into a slot) while the Mediant 2000 Media Gateway is under power.
For details on removing/inserting the optional CPU board, refer to the directions
accompanying it.
3.4.1

Performing Graceful Lock

The Mediant 2000 Media Gateway components are hot swappable which means that
they can be removed from the chassis without taking the Mediant 2000 out of service.
However, currently, the Mediant 2000 is a single gateway which is configured into the
network with an N+1 redundancy meaning that other gateways in the network are
available to take the load in the event of a card failure. Therefore, it is recommended
that you power down the chassis before replacing the components.
Prior to powering down the Mediant 2000, it should be locked gracefully (with no
active calls forced to terminate) using the element management system employed in
your system. For more information on performing graceful (EMS) lock, refer to the
user documentation accompanying the element management system employed in
your system.
Graceful shutdown parameters, also known as node maintenance, is provided via an
SNMP interface. For more information about these parameters, refer to
''Administrative State Control'' on page 186.
3.4.2

Removing Boards

To remove the front TP-1610 board from the chassis, take these 3
steps:
1. Unfasten the screws on the plate of the board.
Version 5.0
Electronic components on printed circuit boards are extremely sensitive to
static electricity. Normal amounts of static electricity generated by clothing
can damage electronic equipment. To reduce the risk of damage due to
electrostatic discharge when installing or servicing electronic equipment, it
is recommended that anti-static earthing straps and mats be used.
Do not set components down without protecting them with a static bag.
45
3. Hardware Installation
June 2006