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Use the tables in this appendix to plan total rack space, power consumption, and fusing for a Cisco 6130 NI-2 DSLAM system.
Table A-1 specifies component rack-space requirements. Normally, no more than two Cisco 6130 DSLAMs should be installed in a 7-foot 23-inch rack.
Use Table A-2 to calculate system rack space requirements for systems with and without plain old telephone service (POTS).
Use Table A-3 to calculate the power consumed by the equipment installed in each rack and in your system.
Use Table A-4 to calculate rack fusing requirements.
The Cisco 6130 NI-2 DSLAM system fits in a 23-inch wide rack. Table A-1 lists individual component rack space requirements.
| Component | Rack Space | Height | Depth |
|---|---|---|---|
Fan tray1 | 2 RUs2 | 3.5 in. (8.89 cm) | 12 in. (30.48 cm) |
DSLAM | 9 RUs | 15.75 in. (40.00 cm) | 12 in. (30.48 cm) |
POTS splitter | 4 RUs | 7 in. (17.78 cm) | 12 in. (30.48 cm) |
| 1Leave 1 RU of space under the fan tray. This space allows for the fan intake plenum. 2RU = rack unit. |
Depending on the total component hardware in your system, you must plan the installation so that central office (CO) facility racks accommodate all of the components in the installed system. The Cisco 6130 DSLAM system can be installed in 7- or 13-foot 23-inch racks.
Use Table A-2 to determine the total rack space necessary for your Cisco 6130 NI-2 DSLAM system hardware. Do not allow the total amount of RU space for a single rack to exceed 42 RUs. If the total hardware rack space requirement exceeds 42 RUs, you must either replan the hardware layout or use more than one rack to house the Cisco 6130 NI-2 DSLAM system components.
| Component | Line | Instruction | Value |
|---|---|---|---|
Cisco 6130 NI-2 DSLAMs | 1 | Total number of Cisco 6130 NI-2 DSLAMs in the rack---maximum is 2 DSLAMs per 7-foot rack (include subtending host and subtended node DSLAMs). |
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Fan trays | 2 | Total number of fan trays in the rack---must equal the line 1 value. |
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POTS splitters | 3 | Total number of POTS splitters in the rack (enter 0 for no POTS splitters). |
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Cisco 6130 NI-2 DSLAM space | 4 | Multiply the total number of DSLAMs on line 1 by 9. |
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Fan tray space | 5 | Multiply the total number of fan trays on line 2 by 3. |
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POTS splitter space | 6 | Multiply the total number of POTS splitters on line 3 by 4. |
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Total RU space | 7 | Add lines 4 through 6 for the total number of RUs required in your system installation. |
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You must calculate power (watts) requirements for each Cisco 6130 NI-2 DSLAM system component to obtain system totals. Use Table A-3 to calculate the total power consumed by your system installation.
| Component | Line | Instruction | Value |
|---|---|---|---|
| Single-Rack Installation1 | |||
Cisco 6130 NI-2 DSLAMs | 1 | Enter the number of Cisco 6130 DSLAMs in the rack---no more than 2 in a 7-foot rack. |
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Fan trays | 2 | Enter the number of fan trays in the rack---must equal line 1. |
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ATUC-1-4DMT modules | 3 | Enter the total number of ATUC-1-4DMT modules installed in DSLAMs. |
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DSLAM power | 4 | Multiply the value on line 1 by 7. |
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NI-2 module power | 5 | For a DS3 or an OC-3 NI-2 module multiply the value on line 1 by 48. |
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Fan tray power | 6 | Multiply the value on line 2 by 32. |
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ATUC-1-4DMT module power | 7 | Multiply the value on line 3 by 12. |
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Total rack power | 8 | Add lines 4 through 7 for the total power in watts consumed by the single-rack installation. |
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| Multiple-Rack Installation2 | |||
Cisco 6130 NI-2 DSLAMs | 9 | Enter the total number of Cisco 6130 NI-2 DSLAMs in the system---include all racks. |
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Fan trays | 10 | Enter the total number of fan trays in the system---include all racks. |
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ATUC-1-4DMT modules | 11 | Enter the total number ATUC-1-4DMT modules in the system---include all racks. |
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DSLAM power | 12 | Multiply the value on line 9 by 7. |
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NI-2 module power | 13 | Multiply the value on line 9 by 48. |
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Fan tray power | 14 | Multiply the value on line 10 by 32. |
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ATUC-1-4DMT modules | 15 | Multiply the value on line 11 by 12. |
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Total system power | 16 | Add lines 12 through 15 for the total power in watts consumed by the multiple-rack installation. |
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| 1Complete lines 1 through 8 for each rack in multiple-rack systems. 2Complete lines 9 through 16 for multiple-rack systems. |
After you determine the amount of power consumed, you must determine the fuse current required for each component wired into the system fuse and alarm panel. In this way, you determine the system total fuse current. Use Table A-4 to calculate the system total fuse current.
| Component | Line | Instruction | Value |
|---|---|---|---|
DSLAM1 | |||
Cisco 6130 DSLAMs2 | 1 | Multiply the total number of DSLAMs in the rack by 7. |
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ATUC-1-4DMTs | 2 | Multiply the total number of ATUC-1-4DMT modules in the rack by 12. |
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NI-2 Modules | 2 | Multiply the total number of NI-2 modules in the rack by 48. |
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| 4 | Add lines 1, 2, and 3. This is the total power in watts required to operate the installed equipment. |
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| 5 | Divide line 4 by 48. This is the nominal current in Amperes required to operate the rack. |
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| 6 | Multiply line 5 by 1.25. This is the fuse current required for operation of the rack. |
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| Fan Tray |
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| 7 | A 1.25A fuse is required for each fan try wired to the alarm panel. A fan try must be installed under each Cisco 6130 NI-2 DSLAM. |
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| 1Complete this table for each rack in the system. 2There can be no more than 2 DSLAMs in a 7-foot rack. |
Posted: Mon Mar 6 06:57:15 PST 2000
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