Cisco Systems UBR904 manual Preventive Site Configuration Maintaining Normal Operation

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Preventive Site Configuration: Maintaining Normal Operation

Table 2-1

Specifications for Operating and Nonoperating Environments

 

 

 

 

 

Specification

 

Minimum

Maximum

 

 

 

Temperature, ambient operating

32°F (0°C)

114°F (40°C)

 

 

 

Temperature, ambient nonoperating and storage

–13°F (–25°C)

95°F (70°C)

 

 

 

Humidity, ambient (noncondensing) operating

5%

95%

 

 

 

Humidity, ambient (noncondensing) nonoperating and

5%

95%

storage

 

 

 

 

 

 

Altitude, operating and nonoperating

Sea level

10,000 ft (3,050 m)

 

 

 

Vibration, operating

10 to 200 Hz, 0.0005 g (1 oct./min.)

 

 

 

Vibration, nonoperating

10 to 100 Hz, 0.0065 g (1 oct./min.)

 

 

 

 

Preventive Site Configuration: Maintaining Normal Operation

Planning a proper location for the Cisco uBR904 cable modem is essential for successful system operation. Equipment placed too close together or inadequately ventilated can cause system overtemperature conditions. In addition, poor equipment placement can make system maintenance difficult. Following are precautions that can help avoid problems during installation and ongoing operation.

General Precautions

Follow these general precautions when planning your equipment locations and connections:

We recommend keeping the Cisco uBR904 cable modem off the floor and out of any area that tends to collect dust.

Follow ESD prevention procedures to avoid damage to equipment. Damage from static discharge can cause immediate or intermittent equipment failure.

Preparing for Installation 2-11

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Contents Preparing for Installation Safety Recommendations Preventing Electrostatic Discharge Damage Safety with ElectricityFor Class a Equipment For Class B Equipment FCC RequirementsCispr 22 Requirements Site RequirementsInterference Considerations AC PowerWiring and Cabling Coaxial Cable Quality Wiring and CablingDistance Limitations Personal Computer Hardware and Software Installing the Cisco uBR904 Cable Modem at the HeadendSite Environment Cisco uBR904 Cable Modem Footprint and Outer DimensionsGeneral Precautions Preventive Site Configuration Maintaining Normal OperationPower Considerations Tools for InstallationRJ-45 Receptacle and Plug Making a Crossover Ethernet Cable ConnectionRJ-45 Cable Identification Configuration InformationCisco uBR904 Cable Modem Installation Checklist Site Log Task Verified by Date Site LogPreparing for Installation Site Log
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UBR904 specifications

The Cisco UBR904 is a versatile broadband access device designed to deliver high-speed internet and data services in various deployment scenarios, particularly suitable for cable operators and service providers. This device allows operators to provide broadband services over a wide area, utilizing advanced technologies to ensure reliability and performance.

One of the key features of the UBR904 is its capability to support multiple channels for upstream and downstream communication, allowing for greater bandwidth and improved network performance. With its integrated DOCSIS (Data Over Cable Service Interface Specification) compliance, the UBR904 enables operators to leverage existing coaxial cable infrastructures to deliver data services efficiently. This makes it an ideal choice for operators looking to expand their service offerings without the need for extensive infrastructure changes.

Equipped with a powerful processor and ample memory, the UBR904 is designed for high throughput and low latency, supporting IP data services, voice services, and video on demand. It utilizes advanced modulation techniques and error correction algorithms that enhance data transmission efficiency and reliability. This results in a robust platform capable of meeting the demands of high-density areas while accommodating future growth.

The UBR904 also features flexible management capabilities. It includes support for SNMP (Simple Network Management Protocol), enabling operators to monitor and manage network performance effectively. The device can be easily configured through a graphical user interface or command-line interface, providing system administrators with the tools needed for straightforward deployment and maintenance.

In addition to its core functionalities, the UBR904 integrates security features to protect network traffic and ensure user data integrity. This includes capabilities for secure tunneling and access control lists, which enhance the security of the broadband connection.

Furthermore, the Cisco UBR904 is designed with scalability in mind. Operators can easily scale their networks by adding additional modules or interfaces as demand grows. This ensures that the UBR904 can meet the evolving needs of service providers without necessitating a complete hardware overhaul.

In summary, the Cisco UBR904 is a robust, feature-rich broadband access device that combines high performance, advanced technologies, and scalability, making it an excellent choice for operators looking to deliver high-speed internet and data services across diverse environments. Its ease of use and extensive management features further enhance its appeal, positioning it as a key player in the broadband access market.