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Chapter 8 Installing an expansion unit 93
Chapter 8
Installing an expansion unit
Adding an expansion unit increases the capacity of your BCM50 system by providing a method of adding a media bay module (MBM). Each MBM you add increases the number of public switched telephone network (PSTN) trunks or extensions that you can connect to the BCM50 system.
The figure Overview of installing a expansion unit on page 93 shows the steps required to install
the expansion unit.
Figure 45 Overview of installing a expansion unit
Installation and Maintenance Guide
94 Chapter 8 Installing an expansion unit
For information about installing an expansion unit:
•
Unpacking the expansion unit on page 94
•
Verifying the media bay module switch settings on page 94
•
Installing a media bay module in an expansion unit on page 97
•
Installing the expansion unit on page 97
Unpacking the expansion unit
Open the expansion unit box and remove all the components. Check that the box contains the following components:
• one expansion unit
• one expansion unit power supply
• one power supply cable
• one expansion cable (shielded Ethernet cable)
• one power supply retention clip
• four rubber feet
Visually inspect the components for damage during shipping. If you find damage, contact your
Nortel representative.
Warning: Make sure the power supply to the expansion unit is disconnected before inserting or removing an MBM.
Verifying the media bay module switch settings
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Chapter 8 Installing an expansion unit 95
Figure 46 Switches on the media bay module (not applicable for GASM or GATM)
Underside of MBM
6 5 4 3 2 1 Off
On
Back of MBM dip switches
On 1 2 3 4 5 6 Top of MBM
Off
Rear view of MBM
Note: The GASM and GATM MBMs have a dip switch configuration different from that shown in the figure
on page 96 and the procedure To set GATM dip switches on page 97.
Verify that the dip switches for your MBMs are in the default factory positions.
If you install a DTM, ADID4, ADID8, BRIM, 4x16, DSM16, DSM32, or ASM8, ensure that all the switches are on, which is the default setting for the MBM switches. After you set the switches,
proceed to Installing a media bay module in an expansion unit on page 97.
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96 Chapter 8 Installing an expansion unit
To set G4x16 or G8x16 dip switches
1 Set the Module Select dip switches to on (up). See the figure
G4x16/G8x16 dip switch location on page 96.
2 Set the Mode/Country Select dip switches to off (down); this setting allows the MBM to automatically download the country profile settings.
Figure 47 G4x16/G8x16 dip switch location
Rear of MBM
2
ON
OFF
1 2 3 4 5 6
Module Select
1 2 3 4 5 6 7 8 ON
OFF
Mode/Country Select
Table 17 G4x16/G8x16 lines and DNs settings
Expansion unit
1
Module
05
Card
01
07 01
Lines
065-068 (G4X16)
065-072 (G8x16)
095-098 (G4X16)
095-102 (G8X16)
DNs
253-268
285-300
To set GASM dip switches
1 For the dip switches on the left side at the rear of the module, set all switches to on.
2 For the dip switches on the right side at the rear of the module, set the switches according to
the table GASM dip switch settings (switch 1–3) on page 96 and the table
GASM dip switch settings (switch 4–8) on page 97.
Table 18 GASM dip switch settings (switch 1–3)
Switch
Switch 1
Switch 2
Switch 3
Description Setting
Firmware download capability OFF—Standard mode (firmware downloading not supported)
ON—Enhanced mode (firmware downloading supported)
Set when the firmware is downloaded from the BCM50
(for enhanced mode only)
OFF—if you want the GASM to download the firmware when the firmware version in the BCM50 is different from the version in the GASM (default)
ON—if you want the GASM to download the firmware whenever a cold start is performed for the BCM50
Enable or disable echo cancellation
OFF—Enables echo cancellation (default)
ON—Disables echo cancellation
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Chapter 8 Installing an expansion unit 97
Table 19 GASM dip switch settings (switch 4–8)
Switches 4 to 8 select the region for the GASM as follows:
Switch 4 Switch 5 Switch 6
North America
United Kingdom
OFF
OFF
OFF
OFF
OFF
OFF
Australia
Poland
OFF
OFF
OFF
OFF
OFF
OFF
Switch 7
OFF
OFF
ON
ON
Switch 8
OFF
ON
OFF
ON
3 After you set the switches, proceed to
Installing a media bay module in an expansion unit on page 97.
To set GATM dip switches
1 For the dip switches on the left side at the rear of the module, set all switches to on.
2 For the dip switches on the right side at the rear of the module (country profile switches), set all switches to off. The GATM downloads the country profiles automatically.
3 After you set the switches, proceed to
Installing a media bay module in an expansion unit on page 97.
Installing a media bay module in an expansion unit
Follow this procedure to install a media bay module (MBM).
To install an MBM
1 Attach one end of a grounding strap to your wrist and the other end to a grounded metal surface.
2 With the face of the MBM toward you, insert the MBM into the expansion unit.
3 Push the MBM completely into the expansion unit. You hear a click when the MBM is firmly seated in the expansion unit.
The MBM must be configured for it to function. For information about configuring an MBM,
see the procedure To configure the MBM(s) on page 152.
4 Proceed with
Installing the expansion unit on page 97.
Installing the expansion unit
Make sure that the expansion unit is installed close enough to the main unit so that the supplied expansion cable can be connected between the expansion unit and main unit.
The expansion unit can be mounted in a rack, on a wall, or on a desktop. Typically, the expansion unit is mounted in the same way as the main unit.
Installation and Maintenance Guide
98 Chapter 8 Installing an expansion unit
Use one of the following procedures to mount the expansion unit:
•
Installing the BCM50 unit in an equipment rack on page 82
•
Installing the BCM50 unit on the wall on page 86
•
Installing the BCM50 unit on a desktop or shelf on page 91
Next step
If you install a second expansion unit on the system, repeat the procedures in this section for the second expansion unit.
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