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4-5

Cisco CVA122/CVA122E Hardware Installation Guide

OL-0799-02 (05/2001)

Chapter 4

Troubleshooting

Troubleshooting Subsystems

Figure 4-2

Basic Troubleshooting Strategy for Startup Problems 

Turn on

system power

Power

LED on?

Power

LED on?

No

No

Yes

Yes

Yes

Troubleshoot

power

subsystem

Check the

coaxial

(CATV) cable

Troubleshoot

coaxial

cable

HFC network

problem-

troubleshoot &

service

Check the

personal

computer

Contact your

system

administrator

No

No

Coaxial

cable in

excellent
condition

?

Coaxial

cable in

excellent
condition

?

Check RF

downstream

signal

Yes

Yes

Yes

Down-

stream video 

and digital signal

alignment

OK?

Troubleshoot

personal

computer

No

Yes

Can you 

view the

web page?

Can you 

view the

web page?

Yes

H11315

Replace or 

repair

coaxial

cable

No

Get computer

and/or network

I/F card tech

assistance

No

Installation

successful

Содержание CVA122

Страница 1: ...A 95134 1706 USA http www cisco com Cisco Systems Inc Corporate Headquarters Tel 800 553 NETS 6387 408 526 4000 Fax 408 526 4100 Cisco CVA122 CVA122E Cable Voice Adapter Hardware Installation Guide May 2001 Text Part Number OL 0799 02 ...

Страница 2: ...to one side or the other of the television or radio Move the equipment farther away from the television or radio Plug the equipment into an outlet that is on a different circuit from the television or radio That is make certain the equipment and the television or radio are on circuits controlled by different circuit breakers or fuses Modifications to this product not authorized by Cisco Systems In...

Страница 3: ...ment Publications xi Obtaining Documentation xi World Wide Web xi Documentation CD ROM xii Ordering Documentation xii Documentation Feedback xii Obtaining Technical Assistance xii Cisco com xiii Technical Assistance Center xiii Contacting TAC by Using the Cisco TAC Website xiii Contacting TAC by Telephone xiii C H A P T E R 1 Product Overview 1 1 Cisco CVA122 CVA122E Cable Voice Adapter Descriptio...

Страница 4: ...2 5 Cabling 2 5 Interference Considerations 2 6 Coaxial Cable Quality 2 6 Distance Limitations 2 7 Required Tools and Equipment 2 8 C H A P T E R 3 Installing the Cisco CVA122 CVA122E Cable Voice Adapter 3 1 Cisco CVA122 CVA122E Cable Voice Adapter Installation Checklist 3 1 Physical Placement 3 4 Placing the Cisco CVA122 CVA122E Cable Voice Adapter on a Desktop 3 4 Side Mounting the Cisco CVA122 ...

Страница 5: ...hernet Subsystem 4 8 USB Subsystem 4 9 PC Subsystem 4 10 VoIP Subsystem 4 12 Further Contacts 4 13 A P P E N D I X A Technical Specifications A 1 Physical Power and Environmental Specifications A 1 Data Specifications A 3 Voice Specifications A 5 A P P E N D I X B Connector and Cable Specifications B 1 Coaxial Connector and Cable Specifications B 1 Ethernet Connector and Cabling B 2 Power Connecto...

Страница 6: ...B Equipment C 2 Translated Safety Warnings C 2 Warning Definition C 2 Lightning Activity Warning C 3 Installation Warning C 4 Product Disposal Warning C 5 Jewelry Removal Warning C 6 Incorrect Connection Warning C 7 Ring Signal Generator Warning C 8 TN and IT Power Warning C 9 I N D E X ...

Страница 7: ...ir cable plant s base operating parameters and subscriber service offerings Cable system support engineers and administrators should be acquainted with Ethernet IEEE 802 3 and Universal Serial Bus USB type data communications networks Note This document contains instructions to install or configure the Cisco CVA122 CVA122E Cable Voice Adapter using procedures that only qualified personnel should p...

Страница 8: ...mination System CMTS Chapter 2 Preparing for Installation Outlines site preparation requirements to meet before installing a Cisco CVA122 CVA122E Cable Voice Adapter at a subscriber site Chapter 3 Installing the Cisco CVA122 CVA122E Cable Voice Adapter Provides instructions to connect the Cisco CVA122 CVA122E Cable Voice Adapter perform its initial power on and verify its basic functionality Chapt...

Страница 9: ...etien veuillez lire le Guide de sécurité et de préparation du site Celui ci présente des informations importantes relatives à la sécurité dont vous devriez prendre connaissance Warnung Warnhinweis Bevor Sie das System installieren in Betrieb setzen oder warten lesen Sie die Anleitung zur Standortvorbereitung und Sicherheitshinweise Dieses Handbuch enthält wichtige Informationen zur Sicherheit mit ...

Страница 10: ...0 Series Cable Voice Adapters Note Service provider and subscriber publications for other models of Cisco cable CPE devices are also available on CCO CMTS Hardware Installation Publications Cisco uBR7200 Series Universal Broadband Router Hardware Installation Guide Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide Cisco uBR7200 Series Universal Broadband Router Cable Mod...

Страница 11: ...nd command descriptions on Cisco IOS 12 1based releases Note Use the Cisco IOS Release Command Reference Master Index es to obtain document pointers for specific software release feature sets and commands Configuration Editor and Network Management Publications Cisco Cable Configuration Guide for information on the Cisco Network Registrar CNR product CiscoView Internetworking Device Monitoring and...

Страница 12: ...ion through a local account representative by calling Cisco corporate headquarters California USA at 408 526 7208 or in North America by calling 800 553 NETS 6387 Documentation Feedback If you are reading Cisco product documentation on the World Wide Web you can submit technical comments electronically Click Feedback in the toolbar and select Documentation After you complete the form click Submit ...

Страница 13: ... to the following website http www cisco com Technical Assistance Center The Cisco TAC website is available to all customers who need technical assistance with a Cisco product or technology that is under warranty or covered by a maintenance contract Contacting TAC by Using the Cisco TAC Website If you have a priority level 3 P3 or priority level 4 P4 problem contact TAC by going to the TAC website...

Страница 14: ...P2 level problems are defined as follows P1 Your production network is down causing a critical impact to business operations if service is not restored quickly No workaround is available P2 Your production network is severely degraded affecting significant aspects of your business operations No workaround is available ...

Страница 15: ...h speed network access on the cable television system to residential subscribers The two models are based on The Cisco CVA122 Cable Voice Adapter is based on the Data Over Cable Service Interface Specifications DOCSIS a standard developed with service providers to ensure that any DOCSIS certified cable modem can interoperate with any bidirectional DOCSIS qualified CMTS The DOCSIS standard supports...

Страница 16: ...ar telephone network the Public Telephone Switched Network commonly known as PTSN The Cisco CVA122 CVA122E Cable Voice Adapter can optionally be configured as an IP router using static routes and the RIPv2 routing protocol When operating in routing mode the cable voice adapter can treat its cable Ethernet and USB interfaces as separately routable interfaces Bridging and routing operations are summ...

Страница 17: ...pending on the software release Routing Operations When configured as a router the Cisco CVA122 CVA122E Cable Voice Adapter can directly connect one PC to each of its Ethernet and USB ports at the rear of the router The Ethernet port can also be connected to a standard 10BaseT Ethernet hub which then connects additional computers or Ethernet devices at the site to a local area network LAN In routi...

Страница 18: ...ks for the presence of a secondary ROMMON and if present verifies that the secondary ROMMON has the correct checksum If the secondary ROMMON passes these validation tests the primary ROMMON passes control to the secondary ROMMON which first performs a power on self test and hardware initialization and then loads and executes the Cisco IOS software image Otherwise the primary ROMMON remains in cont...

Страница 19: ... manually or with tools provided by Cisco Systems for this purpose The following sections describe the initial power on and provisioning sequence in more detail as well as the requirements that must be met by both the cable voice adapter and the CMTS before provisioning can succeed Initial Power On Sequence When connected and first powered on the Cisco CVA122 CVA122E Cable Voice Adapter performs t...

Страница 20: ... specified DOCSIS configuration file and configures itself for the appropriate parameters The DOCSIS configuration file defines the cable voice adapter s operating mode such as the provisioned downstream and upstream service assignments assigned frequencies data rates modulation schemes Class of Service CoS type of services to support and other parameters Cisco provides tools to help automate the ...

Страница 21: ...c flow during this process Figure 1 2 Cisco CVA122 CVA122E Cable Voice Adapter Provisioning Overview Note For more detail on the provisioning process see the DOCSIS Radio Frequency Interface RFI specification SP RFII01 990731 or later revision After the Cisco CVA122 CVA122E Cable Voice Adapter goes online it sends traffic between the attached PCs and other CPE devices and the network Internet Intr...

Страница 22: ... DHCP and DOCSIS configuration files to the appropriate servers so that each cable voice adapter when initialized can transmit a DHCP request receive its IP address obtain its TFTP and TOD server addresses and download its DOCSIS configuration file Cisco IOS images and Cisco IOS configuration files must also be prepared for subscribers who are purchasing services that require new software images a...

Страница 23: ... data sent from the cable modem to the CMTS the upstream direction The CMTS divides the cable plant into downstream channels and upstream segments or clusters of nodes Each Cisco CVA122 CVA122E Cable Voice Adapter on the network is configured to receive data on a particular downstream channel A downstream channel contains one or more upstream segments partitioning the upstream plant into smaller s...

Страница 24: ...modems use a request grant mechanism to obtain bandwidth on the upstream The CMTS grants the bandwidth according to the requestor s level of service ensuring that the cable modem is not exceeding the maximum bandwidth for upstream transmissions that has been specified by the subscriber s service agreement Note End to end throughput varies based on the design and loading of network components the m...

Страница 25: ...upported Special telephone features such as call waiting forwarding and conferencing are supported only if using a Cisco IOS image that supports those particular features Note FAX devices standard Group III and computer based Group III machines up to 14 400 baud are supported Caution In certain countries the provisioning of voice telephony over the Internet or use of these products may be prohibit...

Страница 26: ... its features in more detail LED Descriptions Data Ports Voice Ports Power Supply See Appendix B Connector and Cable Specifications for the pinouts and cabling information for each of these connectors LED Descriptions The front panel on the Cisco CVA122 CVA122E Cable Voice Adapter contains 4 LEDs to provide information about the cable voice adapter s status and network connections Figure 1 6 illus...

Страница 27: ...Ethernet connector and the second to the USB connector Table 1 1 Cisco CVA122 CVA122E Cable Voice Adapter Front Panel LED Description Label Description Color Function Cable Status Green On RF link is up and the Cisco CVA122 power on and self test diagnostics have completed successfully the system image has been booted and the system is operational Blink Cisco CVA122 is searching for a downstream f...

Страница 28: ...ng a four wire cable When a two line telephone is plugged into this port the second line acts as if it were plugged into the V2 port If a two line telephone is used a device plugged into the V2 port acts as an extension to the second line of the two line telephone Adapters can be used to connect multiple analog devices to a single voice port When multiple telephones connected to a voice port they ...

Страница 29: ... CVA122 CVA122E Cable Voice Adapter does not contain a power switch After the cable system technician installs connects powers on and initializes the unit it is intended to remain connected to the broadband network when operating normally The same power supply supports both U S and international operation Different power cords are required however depending on the country of operation Caution Use ...

Страница 30: ...1 16 Cisco CVA122 CVA122E Hardware Installation Guide OL 0799 02 05 2001 Chapter 1 Product Overview Features ...

Страница 31: ...c discharge guidelines that should be followed when installing the Cisco CVA122 CVA122E Cable Voice Adapter Warnings and Cautions Follow these guidelines to ensure general safety Install the Cisco CVA122 CVA122E Cable Voice Adapter in compliance with national and local electrical codes In the United States National Fire Protection Association NFPA 70 United States National Electrical Code In Canad...

Страница 32: ... follow these guidelines when working with equipment that is disconnected from a power source but still connected to cable wiring Never install coaxial wiring during a lightning storm Never install cable jacks in wet locations unless the jack is specifically designed for wet locations Never touch uninsulated cable wires or terminals unless the line has been disconnected at the network interface Us...

Страница 33: ...lso see the Cabling section on page 5 Some sites specify that high pass filters must be installed on every tap drop that does not carry upstream data voice or IPPV services Note Installing a high pass filter between the cable voice adapter and the headend will prevent the cable voice adapter from connecting to the headend Ensure that all required headend routing and network interface equipment is ...

Страница 34: ...sco CVA122 CVA122E Cable Voice Adapter Ethernet Connectivity USB Connectivity Operating System1 1 The service provider might support other types of PCs and CPE devices for network connectivity At the minimum these CPE devices must meet the following requirements 10Base T Ethernet connectivity TCP IP networking software and the ability to obtain an IP address using the DHCP protocol Windows 95 Wind...

Страница 35: ...t is intended to remain connected to the network and CPE devices during normal operations Before plugging the unit in verify that the power source is within the values given in Appendix A Technical Specifications Table A 1 Cisco CVA122 CVA122E Cable Voice Adapter Physical Specifications Note The same power supply supports both domestic U S and international operation Different power cords are requ...

Страница 36: ...ality CATV coaxial cable quality can vary dramatically at each installation site Poor insulation improperly installed additional outlets the condition and length of the cable s center conductor and the quality of the cable can negatively affect the connectivity and performance of the cable voice adapter for digital data transmission Coaxial cable tolerances for the transmission of two way digital ...

Страница 37: ... through the transmission network as being less than 2 msec from the CMTS to the Cisco CVA122 CVA122E Cable Voice Adapter and back again Note Exceeding this distance is a violation of the DOCSIS RFI specification When preparing a site for network connections to the Cisco CVA122 CVA122E Cable Voice Adapter consider the following The number of amplifiers from the installation site to the nearest nod...

Страница 38: ...eters if using USB connectivity One straight through category 5 UTP 10Base T Ethernet cable to connect one computer is provided with the cable voice adapter If using an Ethernet hub to connect multiple PCs to the cable voice adapter the following additional cabling is required Crossover category 5 UTP 10Base T Ethernet cable to connect the Ethernet hub to the cable voice adapter Additional straigh...

Страница 39: ...data or permanent damage Ensure the power cord is suitable for your country of operation The subscriber in box documentation set includes Quick Start Cisco CVA122 CVA122E Cable Voice Adapter Subscriber Setup card Cisco CVA122 CVA122E Cable Voice Adapter User Guide The service provider in box documentation set includes Warranty card Licensing information Release notes for the shipping Cisco IOS Rel...

Страница 40: ...2 10 Cisco CVA122 CVA122E Hardware Installation Guide OL 0799 02 05 2001 Chapter 2 Preparing for Installation Required Tools and Equipment ...

Страница 41: ...onnecting to Telephones or Fax Devices Connecting to the Computer Ethernet Connecting to the Computer USB Power On and Initialization Sequence Verifying Installation Caution Before proceeding with the installation verify that you have fulfilled all of the requirements listed in Chapter 2 Preparing for Installation Also read and follow the safety guidelines in the Safety section on page 2 1 as well...

Страница 42: ...cables reach all devices but in a location where the top sides and rear of the chassis are clear of obstructions and away from the exhaust of other equipment Note If placed on a desktop the Cisco CVA122 CVA122E Cable Voice Adapter can be placed flat or it can be placed vertically in its support stand as desired Physical Placement section on page 3 4 Check the power at the subscriber site before an...

Страница 43: ...to the PC s Ethernet adapter using a straight through 10BaseT Ethernet cable To connect additional PCs and other CPE devices at the site use a crossover Ethernet 10Base T Ethernet cable to connect the cable voice adapter to an Ethernet hub Then connect each computer device to the hub using straight through 10BaseT Ethernet cables Connecting to the Computer Ethernet section on page 3 14 If using US...

Страница 44: ...IEC 364 part 1 through part 7 The bottom and sides of the cable voice adapter must remain unobstructed to ensure adequate airflow and to prevent the unit from overheating The cable voice adapter should have at least 3 inches of clearance at the rear to allow sufficient space for the connected cables without crimping Caution Do not install the cable voice adapter on the floor or an uneven or soft s...

Страница 45: ...be placed on the stand The cable voice adapter can be mounted on either side according to whichever position is most convenient for cabling Note Although the cable voice adapter can be mounted on either side Cisco recommends that it be placed with its coaxial cable connector on the bottom This provides the most stable placement when the coaxial cable and other cables are connected to the unit Step...

Страница 46: ...1 Side Mounting the Cisco CVA122 CVA122E Cable Voice Adapter Note For stability Cisco recommends that the Cisco CVA122 CVA122E Cable Voice Adapter be placed as shown in Figure 3 1 so that the coaxial cable connector and its attached cable are at the bottom Step 3 Press the cable voice adapter into the stand until each peg snaps securely in place See Figure 3 2 35994 ...

Страница 47: ...tall the cable voice adapter in compliance with all national and local electrical codes such as US NFPA 70 Canadian Electrical Code part I CC22 1 IEC 364 part 1 through part 7 The top and sides of the cable voice adapter must remain unobstructed to ensure adequate airflow and to prevent the unit from overheating The cable voice adapter should have at least 3 inches of clearance at the rear to allo...

Страница 48: ...company the UPS to ensure that the wall and location are suitable for both the UPS and Cisco CVA122 CVA122E Cable Voice Adapter Step 3 Drill two holes 4 1 8 inch 105 mm apart using Figure 3 3 as a guideline Figure 3 3 Wall Mounting the Cisco CVA122 CVA122E Cable Voice Adapter not to scale Step 4 Install two 1 4 inch 6 mm anchors or mounting screws in the holes extending about 1 4 inch 6mm from the...

Страница 49: ...nit indicates that the power supply is supplying power to the unit when it is connected and operational The AC input power supply uses a power factor corrector that allows the Cisco CVA122 CVA122E Cable Voice Adapter to operate in any country where the input voltage is between 100 and 240 VAC and 50 or 60 Hz Different power cords are available to suit the country of operation Note For information ...

Страница 50: ... if lightning should strike and travel through those cables In addition the equipment could be damaged by the higher levels of static electricity present in the atmosphere Note Adhere to the safety guidelines presented in the Safety section on page 2 1 before following procedures in the remainder of this chapter Be sure all equipment to be connected to the cable voice adapter is powered off Connec...

Страница 51: ...122E Cable Voice Adapter to the cable TV CATV system Step 1 Locate the CATV wall outlet to be used for the Cisco CVA122 CVA122E Cable Voice Adapter Step 2 If you want to use the same CATV wall outlet for both the Cisco CVA122 CVA122E Cable Voice Adapter and cable TV contact your service provider for instructions on installing a cable splitter directional coupler to the cable outlet Also if require...

Страница 52: ...VA122 CVA122E Cable Voice Adapter Note Loose connectors inside the residence can cause intermittent network operation Caution To ensure compliance with FCC limits connection to the cable system must be made with a high quality shielded cable If the quality or general condition of the coaxial cable at the subscriber site is in question Cisco recommends that you replace the coaxial cable For more in...

Страница 53: ...e Cisco CVA122 CVA122E Cable Voice Adapter Press the cable firmly into the receptacle Step 4 Connect the other end of the cable to the telephone modem or FAX device that has been given the number assigned for that voice port Press the cable firmly into the receptacle Caution Do not connect the voice ports to telephone wires that exit the building under any circumstances this is a safety hazard The...

Страница 54: ...the service provider you can also connect an Ethernet hub to the cable voice adapter and then connect multiple computers to the Ethernet hub If you are not using the Ethernet interface proceed to Connecting to the Computer USB section on page 3 15 Note If supported by your service provider you can connect two separate computers using both the Ethernet and USB interfaces Step 1 Obtain the required ...

Страница 55: ...ce Adapter to a computer using the Universal Serial Bus USB interface If you are not using the USB interface complete the Connecting to the Computer Ethernet section on page 3 14 before proceeding Step 1 Verify that your computer is turned on and meets the requirements in Table 2 1 on page 2 4 In particular your computer must be running Windows 98 Windows 98 Second Edition Windows 2000 or Windows ...

Страница 56: ...h the cable voice adapter Power On and Initialization Sequence When the Cisco CVA122 CVA122E Cable Voice Adapter is connected and powered on it executes automatic self diagnostic and installation procedures The following procedure describes what you should see during this process Step 1 Watch the LEDs on the front of the Cisco CVA122 CVA122E Cable Voice Adapter When the unit first powers on the LE...

Страница 57: ...ea around the cable voice adapter as free from dust as is practical and review general safety standards Step 7 Give the subscriber the Cisco provided subscriber publications along with any literature your company provides including instructions on how to contact your customer service department Verifying Installation Use the following procedures to verify the cable voice adapter s installation and...

Страница 58: ...apter Step 10 Reconnect the cable system to the cable voice adapter and recheck the network connection at the PC as in step 7 VoIP Telephone Connection If the subscriber has purchased Voice over IP VoIP services use the following procedure to test the VoIP network by making a telephone call over the cable and IP network Step 1 Pick up a telephone connected to one of the cable voice adapter s voice...

Страница 59: ...y hardware troubleshooting information that does not require access to the cable voice adapter s command line interface CLI or knowledge of CLI commands Troubleshooting Overview Installation problems with Cisco CVA122 CVA122E Cable Voice Adapter are commonly due to the cable system and its topography The LEDs on the front panel reveal operational status and help you determine problem areas See Fig...

Страница 60: ... processor successfully Correctly configure the port registers Perform conditional branches Verify that the software controlled LEDs are functional If all diagnostic procedures are successful the LEDs briefly blink 2 The next step of the self test initializes the memory controller and its Dynamic Random Access Memory DRAM If this step succeeds The cable voice adapter first attempts to initialize t...

Страница 61: ...ts up the Cisco IOS image At this point the LEDs indicate the status of the cable voice adapter The Cable Activity LED blinks to indicate activity on the cable interface and remains on otherwise The Ethernet LED goes on solid when the Ethernet interface is properly connected to an Ethernet network interface card on a PC The Ethernet LED also blinks to indicate activity on the Ethernet interface Th...

Страница 62: ... key to troubleshooting is to isolate a problem to a specific subsystem Coaxial Cable Subsystem RF and Digital Subsystem Ethernet Subsystem USB Subsystem PC Subsystem VoIP Subsystem Figure 4 2 on the next page provides a general troubleshooting flowchart Table 4 2 can help you correlate LED behavior with possible problems and suggested courses of actions ...

Страница 63: ...roubleshoot coaxial cable HFC network problem troubleshoot service Check the personal computer Contact your system administrator No No Coaxial cable in excellent condition Coaxial cable in excellent condition Check RF downstream signal Yes Yes Yes Down stream video and digital signal alignment OK Troubleshoot personal computer No Yes Can you view the web page Can you view the web page Yes H11315 R...

Страница 64: ...CP IP software not installed Faulty Ethernet card This is normal behavior when the Ethernet interface is not used Verify the PC is powered on Reseat the Ethernet cable at both ends Verify that the Ethernet cable is the correct type straight through or cross connect for the equipment used If using an Ethernet hub try connecting a PC directly to the cable voice adapter using a straight through cable...

Страница 65: ... other devices that were installed on this cable segment If necessary upgrade them and their interconnecting cables with ones that have higher quality connectors see Coaxial Connector and Cable Specifications in Appendix B Connector and Cable Specifications for the recommended cable and connector quality A high pass filter might be necessary between the modem and TV to prevent signal interference ...

Страница 66: ...nalog video signal Ethernet Subsystem Use the following procedure if you cannot communicate with the Internet from a PC that connects to the Cisco CVA122 CVA122E Cable Voice Adapter using an Ethernet connection Step 1 Is the Ethernet LED on the front panel of the Cisco CVA122 CVA122E Cable Voice Adapter turned on If the Ethernet LED does not light do the following until the LED begins to light a V...

Страница 67: ...ll button to force the computer to obtain an IP address from the DHCP server at the headend Step 4 Did the computer obtain an IP address from the headend If the computer could not obtain an IP address from the headend try removing and reinstalling the Ethernet card following the directions given in its documentation In particular verify that the card does not conflict with any other devices a Choo...

Страница 68: ...nstructions in the booklet that accompanies the Cisco CVA120 series USB driver software CD PC Subsystem To isolate a problem with a PC that is connected to the Cisco CVA122 CVA122E Cable Voice Adapter Step 1 Can you access a web page using the web browser installed on the computer If you cannot access a web page verify that the computer network protocol is configured for TCP IP and that DHCP servi...

Страница 69: ...in the Dial Up Networking connection list box e Click the Connect to the Internet as needed check box to deselect the option Note The check box must not be checked If the checkbox is checked the computer attempts to open a dialup adapter connection each time a network application is started f Click OK g From the Control Panel double click the System icon The System Properties window displays with ...

Страница 70: ...the service provider Voice services must be enabled and configured by the service provider before they can be used Verify that the subscriber s service contract provides voice services Step 2 Have voice services been enabled in the configuration file that is downloaded to the Cisco CVA122 CVA122E Cable Voice Adapter at system startup If necessary contact your provisioning or billing administrator ...

Страница 71: ...log devices that use tone dialing Step 8 Is the sum of the RENs of all devices on any one telephone line less than five If you have plugged multiple telephone modem or FAX devices into the same telephone line to use as extensions the sum of their Ringer Equivalence Numbers REN cannot exceed five If this happens the phones might not ring properly or at all See the documentation for each phone for i...

Страница 72: ...4 14 Cisco CVA122 CVA122E Hardware Installation Guide OL 0799 02 05 2001 Chapter 4 Troubleshooting Further Contacts ...

Страница 73: ...0 3 kg for the AC input external power supply 8 lb 3 5 kg for the Cisco CVA120 Series Uninterruptible Power Supply UPS AC input voltage 120 to 240 VAC1 input with power factor correction AC input current rating 1 0 A2 maximum AC input cable 18 AWG3 two wire cable with a two lead receptacle on the power supply end The power source end contains a North American NEMA 1 15P plug or other country speci...

Страница 74: ...ls Safety CSA 950 95 Third Edition IEC 950 Second Edition with Amendments 1 2 3 and 4 EN60950 1922 with Amendments 1 2 3 4 and 11 AS NZS 3260 1966 with Amendments 1 2 3 and 4 TS001 1997 Emissions CFR 47 Part 15 Class B EN55022 Class B VCCI Class B AS NRZ 3548 1992 Class B ICES 003 Issue 2 Class B April 1997 See also Appendix C Regulatory Compliance and Safety Information 1 VAC volts alternating cu...

Страница 75: ...0K 400K 800K 1 6M 3 2 MHz FEC RS 122 128 Trellis Signal to Noise Ratio SNR 64 QAM 23 5 dB BER 10 8 256 QAM 30 dB BER 10 8 For input level between 15 and 8 dBmV SNR must be greater than 30 dB For input level between 8 and 15 dBmV SNR must be greater than 33 dB Note These performance numbers are in laboratory controlled conditions against statistically pure noise sources AWGN Since such conditions d...

Страница 76: ...gital signal level QPSK 8 to 58 dBmV 16 QAM 8 to 55 dBmV Security DES decryption DOCSIS Baseline Privacy BPI 40 bit and 56 bit DES encryption as controlled by the headend and configuration files Note Cisco IOS images must contain encryption software at both the CMTS and the Cisco CVA120 Series Cable Voice Adapter Both units must be enabled and properly configured to support encryption Table A 2 Ci...

Страница 77: ...dle channel noise 18 dBmC noise shall not exceed Signal to C notched noise 35 dB Inter modulation distortion R2 R3 52 dB 52 dB Single frequency interference 0 to 12 kHz 0 to 4 kHz 28 dBmO 40 dBmO Frequency shift offset 0 2 Hz max 0 1 Hz 99 5 Amplitude tracking input Level dBmO 37 to 0 on hook 37 to 3 off hook 50 to 37 off hook 55 to 50 off hook Max Dev Ave Dev 5 dB 5 dB 25 dB 1 0dB 5 dB 3 0 dB 1 5...

Страница 78: ...in all 30 min intervals Gain hits 3dB 0 in 99 9 of all 15 min intervals 1 count in all 30 min intervals Dropouts 12 0 in 99 9 of all 15 min intervals 1 count in all 60 min intervals Ringing Characteristics Ringing Voltage 46 5 VRMS balanced ringing only Ring Frequency adjustable 20 Hz default 25 Hz 50 Hz Ring Load per line 5 REN Ringer Equivalence Number 4REN 3REN 2REN 1REN Maximum Distance 2225ft...

Страница 79: ...ling Power Connector USB Connector and Cabling Voice Port Connectors Refer to the following sections for more information Coaxial Connector and Cable Specifications The Cisco CVA122 CVA122E Cable Voice Adapter connects to the HFC cable system with a type F right angle PCB mount connector manufactured by Amp model number 531 40047 The body is die cast out of zinc with a tin lead plating The round c...

Страница 80: ...VA122 CVA122E Cable Voice Adapter to the HFC network however the consistent use of RG 59 cable is preferred If you use different types of coaxial cable the following problems can appear Co channel interference If signals at the same frequency are carried on long parallel runs of coaxial cable interference can occur between the signals Higher quality cable helps to prevent this with better shieldin...

Страница 81: ...the RJ 45 cable type hold the two ends of the cable next to each other so you can see the colored wires inside the ends as shown in Figure B 3 Figure B 3 RJ 45 Cable Identification Examine the sequence of colored wires to determine the type of RJ 45 cable Straight through The colored wires are in the same sequence at both ends of the cable Crossover The first far left colored wire at one end of th...

Страница 82: ...gure B 4 Cisco CVA120 Series Power Connector USB Connector and Cabling The USB port on the Cisco CVA122 CVA122E Cable Voice Adapter uses the standard device type B receptacle required by the Universal Serial Bus Specification Revision 1 1 Table B 3 lists the signals used on the USB port 1 2 3 4 5 6 7 8 Table B 2 Power Connector Specifications Pin Number Power Signal 1 56VDC 2 30VDC 3 Return Ground...

Страница 83: ...nnectors This section contains pinout and connection information for the two voice ports on the Cisco CVA122 CVA122E Cable Voice Adapter The voice ports use standard voice connectors six pins with RJ 11 connectors and straight through four wire cables Note The service provider must enable and configure the Cisco CVA122 CVA122E Cable Voice Adapter for voice services before you can use the voice por...

Страница 84: ... 9 RING RING connection for voice port V2 Pin 9 on the dual connector maps to pin 3 on a standard 6 pin RJ 11 10 TIP TIP connection for voice port V2 Pin 9 on the dual connector maps to pin 3 on a standard 6 pin RJ 11 11 NC Not connected 12 NC Not connected 13 14 GND Ground pins are connected to board ground Table B 4 Voice Port Signals continued Connector Pin Signal Description ...

Страница 85: ...arnings page C 2 Safety Information Following are safety instructions that you must follow when installing a Cisco CVA122 CVA122E Cable Voice Adapter Failure to install the unit in accordance with these instructions will invalidate the agency approvals for the Cisco CVA122 CVA122E Cable Voice Adapter General Safety Do not work on the system or connect and disconnect cables during a lightning storm...

Страница 86: ...d by turning the equipment off and on the user is encouraged to try to correct the interference by one or more of the following measures Reorient or relocate the receiving antenna as appropriate Increase the separation between the equipment and receiver Connect the equipment into an outlet on a circuit different from that to which the receiver is connected Consult the dealer or an experienced radi...

Страница 87: ... pericoli relativi ai circuiti elettrici ed essere al corrente delle pratiche standard per la prevenzione di incidenti Advarsel Dette varselsymbolet betyr fare Du befinner deg i en situasjon som kan føre til personskade Før du utfører arbeid på utstyr må du vare oppmerksom på de faremomentene som elektriske kretser innebærer samt gjøre deg kjent med vanlig praksis når det gjelder å unngå ulykker A...

Страница 88: ... tempo trovoada Advertencia No operar el sistema ni conectar o desconectar cables durante el transcurso de descargas eléctricas en la atmósfera Varning Vid åska skall du aldrig utföra arbete på systemet eller ansluta eller koppla loss kablar Warning Read the installation instructions before you connect the system to its power source Waarschuwing Raadpleeg de installatie aanwijzingen voordat u het ...

Страница 89: ...hävitettävä kansallisten lakien ja määräysten mukaisesti Attention La mise au rebut ou le recyclage de ce produit sont généralement soumis à des lois et ou directives de respect de l environnement Renseignez vous auprès de l organisme compétent Warnung Die Entsorgung dieses Produkts sollte gemäß allen Bestimmungen und Gesetzen des Landes erfolgen Avvertenza Lo smaltimento di questo prodotto deve e...

Страница 90: ...rsqu ils sont branchés à l alimentation et reliés à la terre les objets métalliques chauffent ce qui peut provoquer des blessures graves ou souder l objet métallique aux bornes Warnung Vor der Arbeit an Geräten die an das Netz angeschlossen sind jeglichen Schmuck einschließlich Ringe Ketten und Uhren abnehmen Metallgegenstände erhitzen sich wenn sie an das Netz und die Erde angeschlossen werden un...

Страница 91: ...or algemene doeleinden kan een gevaarlijke situatie tot gevolg hebben Varoitus Tämän laitteen tai siihen liitettyjen laitteiden virheellinen kytkentä yleispistorasiaan voi aiheuttaa vaaratilanteen Attention Un branchement incorrect de cet équipement ou de l équipement branché à une prise d usage général peut créer une situation dangereuse Warnung Inkorrektes Anschließen von diesem oder damit verbu...

Страница 92: ...RJ11 téléphone les âmes du câble connecté au port RJ11 ou les cartes imprimées correspondantes La sonnerie est activée par un appel entrant Warnung Dieses Gerät enthält einen Rufsignalgeber Rufumsetzer der unter gefährlicher Spannung steht Die RJ 11 Telefon Anschlußdrähte Leiter die Leiter eines im RJ 11 Anschluß eingesteckten Kabels bzw die dazugehörige Leiterplatte auf keinen Fall berühren wenn ...

Страница 93: ...gklockan är aktiverad Ringklockan aktiveras av inkommande analoga anrop Warning This equipment has been designed for connection to TN and IT power systems Waarschuwing Deze apparatuur is ontworpen voor verbindingen met TN en IT energiesystemen Varoitus Tämä laitteisto on suunniteltu yhdistettäväksi TN ja IT sähkövoimajärjestelmiin Attention Ce matériel a été conçu pour être connecté à des systèmes...

Страница 94: ...C 10 Cisco CVA122 CVA122E Hardware Installation Guide OL 0799 02 05 2001 Appendix C Regulatory Compliance and Safety Information Translated Safety Warnings ...

Страница 95: ...ol defined ix coaxial cable 4 7 condition of 4 7 subsystem for troubleshooting 4 7 configuration files Cisco IOS 1 8 DOCSIS 1 4 1 8 connections coaxial cable 3 11 3 12 power 3 10 crossover cable connection B 2 B 5 D data operations description 1 9 downstream transmissions 1 9 upstream transmissions 1 10 distance limitations transmission 2 7 DOCSIS configuration file 1 4 1 8 configuration file prob...

Страница 96: ...6 Message 4 6 USB 4 6 lightning storm safety during 2 2 M MAX CPE parameter 1 3 maximum CPE devices 1 3 Message LED 4 6 O operations data connections 1 9 LED descriptions 1 12 voice connections 1 10 P pinouts RJ 45 4E B 3 power connections 3 10 site requirements 3 9 surge suppression 2 6 power factor corrector power supply 3 9 power supply physical description 1 15 prerequisites provisioning 1 8 p...

Страница 97: ...n 1 7 subsystems for troubleshooting coaxial cable 4 7 symbols defined viii system specifications A 1 T timesaver symbol defined viii troubleshooting coaxial cable subsystem 4 7 identifying installation problems 4 2 strategy 4 5 U upgrading Cisco IOS images 1 3 upgrading the ROM Monitor software 1 4 upstream transmissions description 1 10 frequency range 1 10 USB LED 4 6 V voice operations caution...

Страница 98: ...Index 4 Cisco CVA122 CVA122E Hardware Installation Guide OL 0799 02 05 2001 ...

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