Cisco UBR7246VXR Installazione dell'hardware - Pagina 3
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Overview
The Cisco uBR7246VXR universal broadband router is used in Cisco Cable Modem Termination System (CMTS) solutions. The
router allows high-speed data services to be packaged similar to basic cable television service or video fare.
The Cisco uBR7246VXR router:
• Supports data and packetized voice connectivity over a bidirectional cable television and IP backbone network.
• Supports high-speed Internet access, IP telephony, and Virtual Private Network (VPN) applications.
• PacketCable 1.0, Data-over-Cable Service Interface Specification (DOCSIS) 1.1 and EuroDOCSIS 1.1 qualified.
• Supports DOCSIS- or EuroDOCSIS-based cable interfaces and cable modems (or set-top boxes with integrated DOCSIS or
EuroDOCSIS cable modems).
• Supports both 6-MHz North American channel plans using ITU-T J.83 Annex B operation and 8-MHz phase alternating
line (PAL) and SEquential Coulour Avec Memoire (SECAM) channel plans using ITU-T J.83 Annex A operation.
• Works in conjunction with dialup access products to support upstream traffic from DOCSIS-based cable interfaces
connected to the public switched telephone network (PSTN).
• Includes environmental monitoring and reporting functions.
• Supports online insertion and removal (OIR). However, the I/O controller, network processing engine (NPE), and clock card
do not support OIR. You must power down the chassis before removing these components.
• Is fully radio frequency (RF) hardened to ensure virtually noise-free transmission.
• Supports N + 1 redundancy solutions using the Cisco RF switch.
• Supports 1+1 interchassis redundancy (does not require the RF switch).
The Cisco uBR7246VXR routers may be installed on a tabletop or rack-mounted. A rack-mount kit ships from the factory with
each router. The rack-mount kit includes the hardware used to mount the router in a standard 19-inch equipment rack or
relay-type rack.
Warning
Only trained and qualified personnel should be allowed to install, replace, or service this equipment.
Statement 1030
For translations of the warnings used in this document, see the Cisco uBR7200 Series Regulatory Compliance and Safety
Information document that comes with this router. Reference the translations by statement number (example: Statement 1020).
Cisco uBR7246VXR Components
The Cisco uBR7246VXR universal broadband router components include:
• Cable interface line cards (also called line cards) that interface to the cable television network.
• Port adapters that connect to the IP backbone and external networks.
• A fan tray, enclosing internal fans that draw cooling air into the chassis to maintain an acceptable operating temperature.
• AC or DC power supplies–the Cisco uBR7246VXR supports an optional redundant power supply.
• A Cisco cable clock card that allows you to lock onto and propagate a T1 clock signal throughout the router midplane.
• One network processing engine (NPE) that performs system management functions for the chassis.
• An I/O controller that shares the system memory functions and the environmental monitoring functions with the network
processing engine.
Note
The I/O controller is not required if you are using the Cisco uBR7200-NPE-G1 network processing engine.
For specific instructions to install, remove, or replace system components, refer to the Configuration Notes directory at the
following URL:
http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/cfig_nts/index.htm
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