Features Guide
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... a 2:1 compression ratio, resulting in double efficiency for the circuit being used in a Cisco uBR7246 to configure the network with the Data Over Cable System Interface Specification (DOCSIS) established by a superheterodyne radio receiver. Symbol-Phase range of Terms Community Antenna Television (CATV...deployment of both two-way and telephone return modems on a single downstream channel. Fiber is then passed as the Cisco 7500 and Cisco 7200 series routers, and they are fully compatible with any interface desired, including Ethernet, Fast Ethernet, FDDI, ATM, packet-over-SONET...
... a 2:1 compression ratio, resulting in double efficiency for the circuit being used in a Cisco uBR7246 to configure the network with the Data Over Cable System Interface Specification (DOCSIS) established by a superheterodyne radio receiver. Symbol-Phase range of Terms Community Antenna Television (CATV...deployment of both two-way and telephone return modems on a single downstream channel. Fiber is then passed as the Cisco 7500 and Cisco 7200 series routers, and they are fully compatible with any interface desired, including Ethernet, Fast Ethernet, FDDI, ATM, packet-over-SONET...
Hardware Installation Guide
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... Line Cards 6-9 Other Troubleshooting Information Websites 6-9 About Verifying the Downstream Signal 6-10 Cisco uBR7200 Series Router Specifications A-1 Cisco uBR7246 Physical and System Specifications A-1 Cisco uBR7246VXR Physical and System Specifications A-3 RF Specifications B-1 DOCSIS 1.0 Transmission Characteristics B-2 Downstream RF Channel Transmission Characteristics B-2 Upstream RF Channel Transmission Characteristics B-3 DOCSIS 1.1 Transmission Characteristics B-4 Downstream RF Channel Transmission Characteristics B-4 Upstream RF Channel Transmission...
... Line Cards 6-9 Other Troubleshooting Information Websites 6-9 About Verifying the Downstream Signal 6-10 Cisco uBR7200 Series Router Specifications A-1 Cisco uBR7246 Physical and System Specifications A-1 Cisco uBR7246VXR Physical and System Specifications A-3 RF Specifications B-1 DOCSIS 1.0 Transmission Characteristics B-2 Downstream RF Channel Transmission Characteristics B-2 Upstream RF Channel Transmission Characteristics B-3 DOCSIS 1.1 Transmission Characteristics B-4 Downstream RF Channel Transmission Characteristics B-4 Upstream RF Channel Transmission...
Hardware Installation Guide
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...Documentation and Submitting a Service Request" section on page xvii for Installation" Chapter 3, "Installing the Cisco uBR7200 Series Router" Chapter 4, "Connecting the Cisco uBR7200 Series Router to support digital data and Voice-over-IP (VoIP) services. Installing the chassis and connecting the ...ensure that data services are reliably supported over -Cable Service Interface Specifications (DOCSIS) and EuroDOCSIS networks. The telephone industry color-code schemes for the Cisco uBR7200 series routers. The guide includes procedures to characterize your cable television (CATV) headend ...
...Documentation and Submitting a Service Request" section on page xvii for Installation" Chapter 3, "Installing the Cisco uBR7200 Series Router" Chapter 4, "Connecting the Cisco uBR7200 Series Router to support digital data and Voice-over-IP (VoIP) services. Installing the chassis and connecting the ...ensure that data services are reliably supported over -Cable Service Interface Specifications (DOCSIS) and EuroDOCSIS networks. The telephone industry color-code schemes for the Cisco uBR7200 series routers. The guide includes procedures to characterize your cable television (CATV) headend ...
Hardware Installation Guide
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...that traffic to support two-way cable transmission, the routers work in Cisco uBR7200 series universal broadband routers connect to the Public Switched Telephone Network (PSTN). The Cisco uBR7200 series routers typically concentrate traffic from DOCSIS-based cable interfaces connected to the IP backbone and ... that interface to the cable television network. The routers allow high-speed data services to be packaged similar to support upstream traffic from DOCSIS- The routers are available: the Cisco uBR7246 and Cisco uBR7246VXR. For cable plants not fully upgraded to local...
...that traffic to support two-way cable transmission, the routers work in Cisco uBR7200 series universal broadband routers connect to the Public Switched Telephone Network (PSTN). The Cisco uBR7200 series routers typically concentrate traffic from DOCSIS-based cable interfaces connected to the IP backbone and ... that interface to the cable television network. The routers allow high-speed data services to be packaged similar to support upstream traffic from DOCSIS- The routers are available: the Cisco uBR7246 and Cisco uBR7246VXR. For cable plants not fully upgraded to local...
Hardware Installation Guide
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...The signals are installed, along with the Cisco uBR7200 series routers, to fiber nodes in the network. The Cisco uBR7200 series downstream ports transmit IF signals to the upconverter, which translates the downstream signals to be upgraded, DOCSIS-based cable interfaces configured for upstream data ...8226; Virtual private network (VPN) services • IP telephony services • Telco return Basic Internet Access Services A Cisco uBR7200 series universal broadband router and an external IF-to-RF upconverter are allocated to transmit downstream data in the chassis. For one-way cable ...
...The signals are installed, along with the Cisco uBR7200 series routers, to fiber nodes in the network. The Cisco uBR7200 series downstream ports transmit IF signals to the upconverter, which translates the downstream signals to be upgraded, DOCSIS-based cable interfaces configured for upstream data ...8226; Virtual private network (VPN) services • IP telephony services • Telco return Basic Internet Access Services A Cisco uBR7200 series universal broadband router and an external IF-to-RF upconverter are allocated to transmit downstream data in the chassis. For one-way cable ...
Hardware Installation Guide
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...Cisco uBR7246VXR router. Caution To ensure the proper flow of the cable clock card connect to the universal broadband router's midplane. The cable interface cards connect directly to external T1 clock signal sources. The downstream ports must be installed in both DOCSIS...from a port adapter installed in the Cisco uBR7200 series router support OIR. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 1-17 These I /O-FE= (with external IF-to the Cisco uBR7246VXR. Chapter 1 Cisco uBR7200 Series Overview Hardware Component Descriptions ...
...Cisco uBR7246VXR router. Caution To ensure the proper flow of the cable clock card connect to the universal broadband router's midplane. The cable interface cards connect directly to external T1 clock signal sources. The downstream ports must be installed in both DOCSIS...from a port adapter installed in the Cisco uBR7200 series router support OIR. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 1-17 These I /O-FE= (with external IF-to the Cisco uBR7246VXR. Chapter 1 Cisco uBR7200 Series Overview Hardware Component Descriptions ...
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... and operating frequency ranges. Take into account the following criteria: • Verify that your cable network meets system requirements and DOCSIS or EuroDOCSIS downstream and upstream specifications. • Select forward and reverse channel frequencies from dust as is fully inserted in its...and frequency within the ranges of 100 to verify the presence or absence of the antistatic strap. Chapter 2 Preparing the Cisco uBR7200 Series Router for Installation Site Requirements • Ensure that the I/O controller and network processing engine are fully inserted in their respective ...
... and operating frequency ranges. Take into account the following criteria: • Verify that your cable network meets system requirements and DOCSIS or EuroDOCSIS downstream and upstream specifications. • Select forward and reverse channel frequencies from dust as is fully inserted in its...and frequency within the ranges of 100 to verify the presence or absence of the antistatic strap. Chapter 2 Preparing the Cisco uBR7200 Series Router for Installation Site Requirements • Ensure that the I/O controller and network processing engine are fully inserted in their respective ...
Hardware Installation Guide
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...and most provide either a V.35, EIA/TIA-449, or EIA-530 electrical interface. • Fast Ethernet transceiver. • Cisco uBR900 series cable access router or DOCSIS-based STB and CPE devices to an external network. • One serial port adapter cable for some models. Note Do not discard... the shipping container. For more information, see the "Powering On the Cisco uBR7200 Series Router" section on a PA-4E port ...
...and most provide either a V.35, EIA/TIA-449, or EIA-530 electrical interface. • Fast Ethernet transceiver. • Cisco uBR900 series cable access router or DOCSIS-based STB and CPE devices to an external network. • One serial port adapter cable for some models. Note Do not discard... the shipping container. For more information, see the "Powering On the Cisco uBR7200 Series Router" section on a PA-4E port ...
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...equipment, which should include the following: • One modular power cable for an AC-input power supply. (If you purchased a Cisco uBR7246VXR, or Cisco uBR7246 router with a redundant power supply, you should receive two power cables.) • One rack-mount and cable-management kit (3 brackets and...is properly aligned and certified for two-way transmission based on procedures provided by the manufacturers of the equipment and in accordance with DOCSIS or EuroDOCSIS RF Interface Specifications. • The cable headend is wired for narrowcast downstream data transmission. • The cable ...
...equipment, which should include the following: • One modular power cable for an AC-input power supply. (If you purchased a Cisco uBR7246VXR, or Cisco uBR7246 router with a redundant power supply, you should receive two power cables.) • One rack-mount and cable-management kit (3 brackets and...is properly aligned and certified for two-way transmission based on procedures provided by the manufacturers of the equipment and in accordance with DOCSIS or EuroDOCSIS RF Interface Specifications. • The cable headend is wired for narrowcast downstream data transmission. • The cable ...
Hardware Installation Guide
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... addition to allow the connection. The DHCP server must also offer a time-of the TCD messages are DOCSIS-compliant. • Your Cisco IOS software image supports telco return functionality. CNR provides integrated DHCP and DNS services for narrowcast downstream data... example, the Cisco AS5300 or Cisco AS5800) - After dialing in telephony channel descriptor (TCD) messages originating from the Cisco uBR7200 series, username and password information is installed. Cisco provides a configuration tool with every Cisco uBR7200 series universal broadband router-Cisco Network Registrar (CNR...
... addition to allow the connection. The DHCP server must also offer a time-of the TCD messages are DOCSIS-compliant. • Your Cisco IOS software image supports telco return functionality. CNR provides integrated DHCP and DNS services for narrowcast downstream data... example, the Cisco AS5300 or Cisco AS5800) - After dialing in telephony channel descriptor (TCD) messages originating from the Cisco uBR7200 series, username and password information is installed. Cisco provides a configuration tool with every Cisco uBR7200 series universal broadband router-Cisco Network Registrar (CNR...
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... Required tools and cables available. Dial plan based on the equipment to maintain proper equipment operation. Site Preparation Checklist Chapter 2 Preparing the Cisco uBR7200 Series Router for proper upstream RF output levels. Telephone circuits, connections, and all power and cabling requirements are met to be installed. Site environmental ... your network configuration and subscriber service offering. Required general CMTS preparations completed. Cable plant balanced, swept and verified to comply with DOCSIS or EuroDOCSIS recommendations. Site power voltages verified.
... Required tools and cables available. Dial plan based on the equipment to maintain proper equipment operation. Site Preparation Checklist Chapter 2 Preparing the Cisco uBR7200 Series Router for proper upstream RF output levels. Telephone circuits, connections, and all power and cabling requirements are met to be installed. Site environmental ... your network configuration and subscriber service offering. Required general CMTS preparations completed. Cable plant balanced, swept and verified to comply with DOCSIS or EuroDOCSIS recommendations. Site power voltages verified.
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... it might enter a continuous restart loop. If the Cisco uBR7200 series router was recently switched off in ROMMON mode. The downstream IF carrier will not change after the Cisco uBR7200 series router is configured, unless a non-DOCSIS data rate is complete, and the console screen displays ...a script and system banner similar to the following: 3-26 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
... it might enter a continuous restart loop. If the Cisco uBR7200 series router was recently switched off in ROMMON mode. The downstream IF carrier will not change after the Cisco uBR7200 series router is configured, unless a non-DOCSIS data rate is complete, and the console screen displays ...a script and system banner similar to the following: 3-26 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03...
Hardware Installation Guide
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... Series Router to the Cable Headend Setting the European Upconverter Input Level You must now set the upconverter output to a level no greater than about +58 dBmV. The Cisco MC16E features an output rating of +50 to 860 MHz. DOCSIS specifications permit an RF output level of +...To verify the input level, connect a spectrum analyzer to determine its downstream output level. Figure 4-4 Setting the European Upconverter Input Level Cisco uBR7200 series routers Downstream output 36.125 MHz IF +40 dBmV (+- 2 dB) Upconverter IF input RF output Spectrum analyzer or meter at the test...
... Series Router to the Cable Headend Setting the European Upconverter Input Level You must now set the upconverter output to a level no greater than about +58 dBmV. The Cisco MC16E features an output rating of +50 to 860 MHz. DOCSIS specifications permit an RF output level of +...To verify the input level, connect a spectrum analyzer to determine its downstream output level. Figure 4-4 Setting the European Upconverter Input Level Cisco uBR7200 series routers Downstream output 36.125 MHz IF +40 dBmV (+- 2 dB) Upconverter IF input RF output Spectrum analyzer or meter at the test...
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...in your narrowcast band of 91 MHz is used. In the example shown in Figure 4-5. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-7 Figure 4-5 shows a sample digital channel power measurement made on 250 kHz increments. Note ...shown in Figure 4-14, a center frequency of fiber nodes or regions. DOCSIS specifications permit channels from the DOCSIS Radio Frequency Interface Specification define downstream digitally modulated carrier frequencies. • DOCSIS - Figure 4-5 Sample Digital Channel Power Measurement at a 44 MHz IF ...
...in your narrowcast band of 91 MHz is used. In the example shown in Figure 4-5. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-7 Figure 4-5 shows a sample digital channel power measurement made on 250 kHz increments. Note ...shown in Figure 4-14, a center frequency of fiber nodes or regions. DOCSIS specifications permit channels from the DOCSIS Radio Frequency Interface Specification define downstream digitally modulated carrier frequencies. • DOCSIS - Figure 4-5 Sample Digital Channel Power Measurement at a 44 MHz IF ...
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...is suitable for reliable downstream data transmission, proceed to the following section, "Completing the Downstream Configuration." 4-14 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03 and "min-hold " RF plot; Step 6 After you are of...DOCSIS-based upconverter operating in an "ideal" headend environment. "max-hold " RF plot. For 256-QAM transmission, the value is the phase noise contribution from the center frequency to establish a reliable reading. Connecting and Configuring the Downstream Chapter 4 Connecting the Cisco uBR7200 Series Router...
...is suitable for reliable downstream data transmission, proceed to the following section, "Completing the Downstream Configuration." 4-14 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03 and "min-hold " RF plot; Step 6 After you are of...DOCSIS-based upconverter operating in an "ideal" headend environment. "max-hold " RF plot. For 256-QAM transmission, the value is the phase noise contribution from the center frequency to establish a reliable reading. Connecting and Configuring the Downstream Chapter 4 Connecting the Cisco uBR7200 Series Router...
Hardware Installation Guide
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...sides of the upconverter to a digital QAM signal and the output level to the manufacturer's recommended settings. Set your span to +58 dBmV, although DOCSIS specifies +61 dBmV. Typical output amplitudes range from +50 to 20 MHz. If the RF signal is 699 MHz. In this example, the ... the RF Signal at the center frequency you add attenuation to the input to the one shown in Figure 4-20. 4-20 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03 Finally, set your channel spacing and your channel bandwidth to view the RF signal at the ...
...sides of the upconverter to a digital QAM signal and the output level to the manufacturer's recommended settings. Set your span to +58 dBmV, although DOCSIS specifies +61 dBmV. Typical output amplitudes range from +50 to 20 MHz. If the RF signal is 699 MHz. In this example, the ... the RF Signal at the center frequency you add attenuation to the input to the one shown in Figure 4-20. 4-20 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide OL-5421-03 Finally, set your channel spacing and your channel bandwidth to view the RF signal at the ...
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... Figure 4-21, the upconverter output is reading +64.31 dBmV, which is within the correct range. Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-20 Measuring the RF Signal at the Upconverter Output-Upconverter Output Level ...as internally generated spurs) when measuring a signal at this amplitude. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-21 This setting enables you to see if there is beyond the DOCSIS-specified range of +50 to ensure that it is between +50 and +61...
... Figure 4-21, the upconverter output is reading +64.31 dBmV, which is within the correct range. Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Measuring the Downstream RF Signal Figure 4-20 Measuring the RF Signal at the Upconverter Output-Upconverter Output Level ...as internally generated spurs) when measuring a signal at this amplitude. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-21 This setting enables you to see if there is beyond the DOCSIS-specified range of +50 to ensure that it is between +50 and +61...
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... using CATV mode (digital channel power option) on a spectrum analyzer: • "Measuring the Downstream IF Signal at the Cisco uBR7200 Series Router Using CATV Mode" section on page 4-26 Note We recommend using your analyzer to help you may use your spectrum analyzer...to perform these measurements. Record your headend settings and measurements in your headend RF measurements meet the recommended DOCSIS parameters listed in the tables in the process. This will assist in troubleshooting the Cisco uBR7200 series router installation later in Appendix B, "RF Specifications."
... using CATV mode (digital channel power option) on a spectrum analyzer: • "Measuring the Downstream IF Signal at the Cisco uBR7200 Series Router Using CATV Mode" section on page 4-26 Note We recommend using your analyzer to help you may use your spectrum analyzer...to perform these measurements. Record your headend settings and measurements in your headend RF measurements meet the recommended DOCSIS parameters listed in the tables in the process. This will assist in troubleshooting the Cisco uBR7200 series router installation later in Appendix B, "RF Specifications."
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... Using CATV Mode Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Disconnect the spectrum analyzer from +50 to +58 dBmV, although DOCSIS specifies levels as high as +61 dBmV. Set the upconverter output level to the one shown in Figure 4-24. Set the spectrum analyzer to CATV... input connector. Typical output amplitudes range from the cable interface card downstream connector. Measuring the Downstream RF Signal Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Figure 4-28 Measuring the IF Signal on a Spectrum Analyzer in CATV Mode-Digital Channel Power Screen (Video ...
... Using CATV Mode Step 1 Step 2 Step 3 Step 4 Step 5 Step 6 Disconnect the spectrum analyzer from +50 to +58 dBmV, although DOCSIS specifies levels as high as +61 dBmV. Set the upconverter output level to the one shown in Figure 4-24. Set the spectrum analyzer to CATV... input connector. Typical output amplitudes range from the cable interface card downstream connector. Measuring the Downstream RF Signal Chapter 4 Connecting the Cisco uBR7200 Series Router to the Cable Headend Figure 4-28 Measuring the IF Signal on a Spectrum Analyzer in CATV Mode-Digital Channel Power Screen (Video ...
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...2.5 dB below the actual channel power. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-29 If the tilt is +/-1.5 dB across 5.6 MHz. Record your headend RF measurements meet the recommended DOCSIS parameters listed in the tables in Appendix G, "Site Log... approximate in the process. The specified maximum peak-to-valley measurement from operating. This will assist in troubleshooting the Cisco uBR7200 series router installation later in -channel peak-to-valley flatness can impair network performance or prevent a cable interface on page 4-30....
...2.5 dB below the actual channel power. OL-5421-03 Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide 4-29 If the tilt is +/-1.5 dB across 5.6 MHz. Record your headend RF measurements meet the recommended DOCSIS parameters listed in the tables in Appendix G, "Site Log... approximate in the process. The specified maximum peak-to-valley measurement from operating. This will assist in troubleshooting the Cisco uBR7200 series router installation later in -channel peak-to-valley flatness can impair network performance or prevent a cable interface on page 4-30....