Table of Contents

Rack Space and Power Specifications

This appendix provides the calculation tables you need to plan total rack space and power requirements for your Cisco 6100 Series with NI-1 system configuration.

Table A-1 provides a quick reference for configuration planning.

Table A-1: Quick Reference for Configuration Planning

Configuration	Rack Space Calculation	Power Requirements Calculation
Direct Connect with a POTS splitter (without subtended network)	If you are using a Cisco 6130 chassis, complete lines 1 through 8 in Table A-3. If you are using a Cisco 6100 chassis, complete lines 9 through 16 in Table A-3.	If you are using a Cisco 6130 chassis, complete lines 1 through 8 in Table A-4.1 If you are using a Cisco 6100 chassis, complete lines 1 through 8 in Table A-4.1
Direct Connect with a POTS splitter (with subtended network)	If you are using a Cisco 6130 chassis, complete lines 1 through 8 in Table A-3. If you are using a Cisco 6100 chassis, complete lines 9 through 16 in Table A-3.	If you are using a Cisco 6130 chassis, complete lines 1 through 8 in Table A-4.1 If you are using a Cisco 6100 chassis, complete lines 1 through 8 in Table A-4.1
Direct Connect without a POTS splitter (without subtended network)	Complete lines 17 through 22 in Table A-3.	Complete lines 1 through 8 in Table A-4.1
Direct Connect without a POTS splitter (with subtended network)	Complete lines 17 through 22 in Table A-3.	Complete lines 1 through 8 in Table A-4.1
DOH2 (without subtended network)	If you are using a Cisco 6100 chassis, complete lines 23 through 30 in Table A-3.	If you are using a Cisco 6100 chassis, complete lines 1 through 7 and 9 through 11 in Table A-4.
DOH (with subtended network)	If you are using a Cisco 6100 chassis, complete lines 23 through 30 in Table A-3.	If you are using a Cisco 6100 chassis, complete lines 1 through 7 and 9 through 11 in Table A-4.

1Table A-4 must be completed for each Cisco 6100/6130, fan tray, and Cisco 6110. 2DOH = Digital Off-Hook.

The Cisco 6100 Series with NI-1 system fits in a 23-inch wide rack. See Table A-2 for individual rack space requirements.

Table A-2: Rack Space Requirements

Component	Rack Space	Height	Depth
Cisco 6100/61301	9 RUs2	15.75 in. (40.00 cm)	12 in. (30.48 cm)
Cisco 61103	4 RUs	7 in. (17.78 cm)	12 in. (30.48 cm)
POTS splitter Cisco 6120 Siecor POTS splitter	4 RUs	7 in. (17.78 cm)	12 in. (30.48 cm)
Fan tray	2 RUs	3.5 in. (8.89 cm)	12 in. (30.48 cm)

1Leave 1 RU of space under the fan tray or under the Cisco 6100 chassis (if a fan tray is not used). This space allows for the intake plenum and for cabling back to front for the OC-3c NI-1 module. 2RU = rack unit. 3The Cisco 6110 is used in a DOH configuration only.

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Warning Systems using a Cisco 6100 chassis must connect to the network through a POTS splitter to provide the secondary lightning protection.

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Depending on your configuration type, plan accordingly so that the central office (CO) rack accommodates your needs. Use Table A-3 to calculate the rack space necessary for your Cisco 6100 Series with NI-1 system configuration. The total amount of rack space should not exceed 42 RUs. If your total configuration exceeds 42 RUs, either replan your configuration or use more than one rack to house the Cisco 6100 Series with NI-1 system components.

Depending on your configuration type, calculate the typical power required for each Cisco 6100 Series component. After you calculate the typical power, determine the minimum fuse value for each component that is wired to the fuse and alarm panel. Use Table A-4 to calculate the minimum fuse rating that is necessary for each of your Cisco 6100 Series with NI-1 system components.

Note The power rating label that is supplied on the rear of each chassis and fan tray indicates the maximum fuse value for the chassis or the fan tray.

Table A-4: Fuse Calculation for the Cisco 6100 Series with NI-1 System Components

Component	Instructions	Calculation
Cisco 6100/6130 Chassis1,2
1a	If you are using CAP ATU-C modules, multiply 8.5W by the total number of modules in the Cisco 6100.3
1b	If you are using DMT-2 ATU-C modules, multiply 9.5W by the total number of modules in the Cisco 6100/6130.
1c	If you are using flexi ATU-C modules, multiply 13.5W by the total number of modules in the Cisco 6100/6130.
1d	If you are using STU-C modules, multiply 9W by the total number of modules in the Cisco 6130.4
1e	Add the amounts for lines 1a through 1d.
2	Enter 10W for the DS3 STM5 for the subtending host (if you are installing a subtended network).
3	Enter 51W for the DS3 or OC-3c NI-1 module.
4	Enter 9W for the system controller module.
5	Add lines 1e, 2, 3, and 4. This is the typical power required for the Cisco 6100/6130.
6	Divide line 5 by 48. This is the nominal current for the Cisco 6100/6130.
7	Multiply line 6 by 1.25. This is the minimum fuse rating needed to operate the Cisco 6100/6130 in your system.
Fan Tray
8	A 1.25A fuse is required for each fan tray wired to the fuse and alarm panel. A fan tray must be installed under a Cisco 6130 chassis. Cisco 6100 chassis when either dual-port DMT-2 or quad-port ATU-C modules are installed in the chassis.
Cisco 6110
9	Enter 25W for the Cisco 6110.
10	Divide line 9 by 48. This is the nominal current for the Cisco 6110.
11	Multiply line 10 by 1.25. This is the minimum fuse rating needed to operate Cisco 6110 in your system.

1For a Direct Connect configuration, the maximum number of Cisco 6100/6130 chassis is two per rack. For a DOH configuration, the maximum number of Cisco 6100 chassis is one per DOH configuration. 2Complete this section for each subtending host. 3You can only use CAP ATU-C modules in a DOH configuration. 4You can only use STU-C modules in a Direct Connect without a POTS splitter configuration. 5STM = subtend host module.

Posted: Wed May 17 11:05:02 PDT 2000
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