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Site Requirements
Depending on your configuration type, plan accordingly so that the CO rack accommodates your needs.
Use
Table 2-2
Rack Space Calculation for the Cisco 6260 System Configurations
Line
Instructions
Cisco 6260 with a POTS Splitter Configuration
1
Total number of Cisco 6260 chassis in the rack (include subtending host and subtended
node chassis).
2
Total number of POTS splitters
3
Number of RUs required for the POTS splitter
4
Multiply 13.43 RUs by the total number of chassis on line 1.
5
Multiply line 3 by the total number of POTS splitters on line 2.
6
Add lines 4 and 5 for the total number of RUs needed with your Cisco 6260 with a POTS
splitter configuration.
Cisco 6260 without a POTS Splitter Configuration
6
Total number of Cisco 6260 chassis in the rack.
7
Multiply 13.43 RUs by the total number of chassis on line 6 for the total number of RUs needed with
your Cisco 6260 without a POTS splitter configuration.
1. Third-party POTS splitter
2. See the documentation that accompanied the third-party POTS splitter to determine the number of RUs required. One RU is equal to 1.75
inches (4.45 cm).
2.2.2 Power Requirements
The CO power source or rectifier supplies external power to the system as –48V direct current (DC) from
the fuse and alarm panel. Power connections from the fuse and alarm panel are wired separately to the
Cisco 6260 chassis. Connections for single- and dual-power feeds are provided. The power input
connections are redundant, and only one is required for system operation. The nominal voltage is –48
VDC; the minimum operating value is –36 VDC; and the maximum operating value is –60 VDC.
Before you connect the system to a power source, verify that the power source is properly grounded and
Caution
that it falls within the internal power supply rating.
The typical power required for your Cisco 6260 system will depend on your configuration type. Use
Table 2-3
power required for the system.
Table 2-3
Power Calculation for the Cisco 6260 System
Line
Instructions
1
If you are using 4xDMTs, multiply 16.5W by the total number of 4xDMTs installed in the
chassis.
2
If you are using 4xDMT over ISDNs, multiply 16.5W by the total number of 4xDMT over
ISDNs installed in the chassis.
Cisco 6260 Hardware Installation Guide
2-14
Table 2-2
to calculate the rack space necessary for your Cisco 6260 system configuration.
1
in the rack.
to calculate the power required for each of the Cisco 6260 system components and the total
2
.
Chapter 2
Preparing for Installation
Calculation
Calculation
OL-2365-02
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