3com SUPERSTACK 3 ADDING MORE MEMORY

ADDING MORE MEMORY TO

THE

3COM SUPERSTACK 3

NBX CALL PROCESSOR

3C10233 — Upgrade/Replacement Kit for 256 MB Memory Module

Do I Need to Add
More Memory?

Tab l e 1 Memory Needs on SuperStack 3 NBX Call Processor

If you are running this version of NBX software —>

And you want your SuperStack 3 NBX system to
support:

Up to 250 devices, you must have —> at least 128 MB of memory at least 128 MB of memory

Between 251 and 750 devices, you must have —> at least 256 MB of memory at least 256 MB of memory

*Between 751 and 1500 devices, you must have —> This level of device count is

In Table 1, verify the amount of total memory that you need, based on:

■ The version of NBX system software that your system is running

■ The total number of devices that you want your SuperStack 3 NBX

Networked Telephony system to support

Release

3.0.x or 4.0.x

not supported on these
NBX system software
releases.

384 MB of memory (up to a
maximum of 512 MB)*

Release 4.1

or Later

■ Also be sure that your device limit license supports your required level

of total system devices. See your 3Com NBX Voice Authorized Partner.

■ *If you want your SuperStack 3 NBX system to support between 751

and 1500 devices, you upgrade the NBX system software to Release

4.1 before you add additional memory. See “Prepare to Add the
Memory” on page 2.

Replacing a Faulty

Memory Module

Part Number: 900-0113-01 Rev AB Published December 2002

If you want to replace a faulty memory module in your SuperStack 3 NBX
Call Processor chassis, follow the instructions in this guide.

2 ADDING MORE MEMORY TO THE 3COM SUPERSTACK 3 NBX CALL PROCESSOR

Prepare to
Add the Memory

Record the amount of free memory in your existing system; remove all
power and shut the system down to install the memory; and then open
the chassis box, as described in these steps:

1 So that you can verify that you have more free memory after you add the

new memory card, in NBX NetSet > System Configuration > System
Settings, record the number that you see in the Free Memory field.

2 To support between 751 and 1500 devices, upgrade the NBX software to

Release 4.1 now, before you add additional memory.

3 Shut the system down: In NBX NetSet > Operations > Reboot/Shutdown,

click Shutdown, and then click OK.

CAUTION: To prevent damage to the Call Processor board or memory
module, always wear and properly ground an antistatic grounding strap
before you touch the Call Processor or the memory module.

4 Remove all power from the Call Processor chassis.

WARNING: Your SuperStack 3 NBX Call Processor may have 1 or 2 power
supplies, each with a power cord. If your Call Processor has 2 cords, be
sure to remove them both from the chassis.

5 Use a Phillips screwdriver to remove the 8 screws that hold the cover onto

the Call Processor:

a Remove the 3 screws on the left side of the Call Processor (Figure 1).

Figure 1 Call Processor — Left Side View

1

2

3

Examine the Circuit Board 3

b Remove the 3 screws on the right side of the Call Processor (Figure 2).

Figure 2 Call Processor — Right Side View

Examine the
Circuit Board

1

2

3

c Remove the 2 screws along the top of the back of the Call Processor

(not illustrated).

6 After you remove all 8 screws, slide the cover toward the back of the

chassis, and then lift it off carefully.

Locate the 2 memory mounting slots and note the number of memory
modules, as described in these steps:

1 Turn the Call Processor chassis so that the front side is toward you.

2 Find the memory mounting slots. See the white rectangle in Figure 3.

Figure 3 Call Processor Circuit Board Showing Memory Modules