Table Of Contents
Cisco uBR10012 Universal Broadband Router TCC+ Card
The purpose of this document is to provide installation, removal, and troubleshooting information for the Timing, Communication, and Control Plus (TCC+) card installed in the Cisco uBR10012 universal broadband router.
This document is intended for use by a field service engineer who is familiar with Cisco products and headend cable installation procedures.
Warning Only trained and qualified personnel should be allowed to install, replace, or service this equipment. Statement 1030.
This document includes procedures for installing and removing the Cisco TCC+ card that comes with the Cisco uBR10012 universal broadband router. This document also includes technical specifications and troubleshooting information.
For more information about Cisco IOS hardware and software release support and restrictions, refer to the following release notes:
The TCC+ card should not be connected to a DOCSIS Timing Interface (DTI). The DTI server does not have a T-1 clock source, which is required by the TCC+ card.
On the Cisco uBR10012 universal broadband router, the Timing, Communication, and Control Plus (TCC+) card acts as a secondary processor that performs the following functions:
•Generates and distributes 10.24 MHz clock references to each cable interface line card.
•Generates and distributes 32-bit time stamp references to each cable interface line card.
•Allows software to independently power off any or all cable interface line cards.
•Drives the LCD panel used to display system configuration and status information.
•Monitors the supply power usage of the chassis.
•Provides two redundant RJ-45 ports for external timing clock reference inputs such as a Global Positioning System (GPS) or BITS clock.
When two TCC+ cards are installed, they are configured as active (primary) and backup (redundant). If the TCC+ card in the first slot is working at system power-up, it automatically becomes the active card and the TCC+ card in the second slot becomes the backup card. The TCC+ cards monitor each other's priority information, so that if the active card fails, the active card role is transferred to the redundant backup card without loss of data.
Each TCC+ card contains two RJ-45 connectors labeled Primary and Secondary, on the front panel. See Figure 1. These connectors are for a primary and secondary (redundant) Stratum 3 external clock reference source that is traceable to a Stratum 1 clock source. The external reference source allows the Cisco uBR10012 router's reference clock to be synchronized to the Stratum 1 clock source, providing a free-running DOCSIS-quality clock reference and time stamp to the cable interface line cards.
Caution The TCC+ card can connect only to a national clock source such as a GPS receiver or Building Integrated Timing Supply (BITS) clock. The Cisco uBR10000 series router does not support directly connecting the RJ-45 connectors on the TCC+ cards to an outside plant line or telco-provided T1/E1 clock source. You can use an outside or telco-provided T1/E1 clock source only by connecting the source to the TCC+ cards by using a CSU/DSU or other equipment that is approved to FCC part 68 and ANSI/UL1950 for the connection to the public switched telephone network (PSTN).
If present, the primary external clock reference on the active TCC+ card is used. If it is lost, the secondary clock reference (if present) on the active TCC+ card is used. If the active TCC+ card stops functioning, control is transferred to the backup TCC+ card, which then uses its primary and secondary clock reference sources. If neither card has a valid clock reference source, the active TCC+ card uses its own internal clock to provide the DOCSIS-quality clock reference and time stamp.
Note You do not need to provide an external clock reference source to the TCC+ cards. However, you must always have at least one functioning TCC+ card installed in the Cisco uBR10012 router chassis for proper systems operation.
Figure 1 Cisco TCC+ Front Panel
The front panel on the TCC+ card has seven LEDs. They are labeled POWER, STATUS, MAINTENANCE, PRESENT, and ACTIVE. The second set of PRESENT and ACTIVE LEDs are associated with the primary and secondary external clock reference inputs.
Table 1 describes the LEDs on the TCC+ card.
Part Numbers and Technical Specifications
Table 2 lists the specifications for the TCC+ card:
Table 2 TCC+ Card Specifications
Product order number
•Height: 4.73 in. (12.0142 cm)
•Width: 1.548 in. (3.93192 cm)
•Depth: 10 in. (25.4 cm)
1.5 lb (.68 kg)
40 Watts (136.5 btu1 per hour
•Operating: 41 to 104×F (5 to 40×C)
•Storage: -40 to 158×F (-40 to 70×C)
•Operating: 5 to 85%
•Storage: 5 to 95%
-197 to 13,123 ft (-60 to 4000 m)
1 British thermal units per hour
Electrical Equipment Guidelines
Follow these basic guidelines when working with any electrical equipment:
•Before beginning any procedures requiring access to the chassis interior, locate the emergency power-off switch for the room in which you are working.
•Disconnect all power and external cables before moving a chassis.
•Do not work alone when potentially hazardous conditions exist.
•Never assume that power has been disconnected from a circuit; always check.
•Do not perform any action that creates a potential hazard to people or makes the equipment unsafe.
•Carefully examine your work area for possible hazards such as moist floors, ungrounded power extension cables, and missing safety grounds.
Preventing Electrostatic Discharge Damage
Electrostatic discharge (ESD) damage, which occurs when electronic cards or components are improperly handled, can result in complete or intermittent failures. The AC-input power shelf and its AC power modules contain a printed circuit card that is fixed in a metal carrier. Electromagnetic interference (EMI) shielding and connectors are integral components of the carrier. Although the metal carrier helps to protect the cards from ESD, use an anti-static strap each time you handle the modules.
Following are guidelines for preventing ESD damage:
•Always use an ESD-preventive wrist or ankle strap and ensure that it makes good skin contact. Before removing a card from the chassis, connect the equipment end of the strap to a bare metal, unpainted surface on the chassis or rack-mount.
•Handle components by the carrier edges only; avoid touching the card components or any connector pins.
•When removing a module, place it on an anti-static surface or in a static-shielding bag. If the module will be returned to the factory, immediately place it in a static-shielding bag.
•Avoid contact between the modules and clothing. The wrist strap protects the card from ESD voltages on the body only; ESD voltages on clothing can still cause damage.
Caution For safety, periodically check the resistance value of the anti-static strap. The measurement should be between 1 and 10 megohms.
Removing and Replacing the Cisco TCC+ Card
To install a new TCC+ card or to replace an existing card, use the procedures that follow.
Tip If two TCC+ cards are installed for redundant operation, one of the cards can be removed and replaced without interrupting system operations.
To remove and replace an individual Cisco LCD module, you need the following:
•Replacement TCC+ card, product order number UBR10-TCC+-T1=.
•ESD-preventive wrist strap.
Unpack the TCC+ Card
To unpack the TCC+ card, complete the following steps:
Step 1 Make sure that you are properly grounded with an ESD-preventive ground strap.
Step 2 Open the shipping box and remove the TCC+ card.
Step 3 Place the TCC card on an anti-static surface.
Remove the TTC+ Card
Step 1 Make sure that you are properly grounded.
Step 2 Clear enough interface and power cables to allow sufficient space to work.
Step 3 If installing a new TCC+ card, remove the blank slot cover and discard it; then, proceed to Step 1. Otherwise, disconnect the T1 clock cables from the TCC+ card being replaced.
Step 4 Unscrew the top and bottom captive screws on the TCC+ card (Figure 2).
Step 5 Pull the TCC+ card out of the slot and place it on an anti-static surface or in an anti-static bag.
Figure 2 TCC+ Card Captive Screws
Figure 3 Removing the TCC+ Card
Step 6 If you are installing a replacement card, proceed to the next step. Otherwise, install a blank cover over the slot and screw down its captive screws to conclude this procedure.
Note For proper cooling and airflow, a cover must always be installed in a blank TCC+ card slot. The product order number for the blank TCC+ card cover is UBR10-TCC+-COVER=.
Replace the TCC+ Card
Step 1 Pick up the replacement TCC+ card, and position it in front of the card slot.
Step 2 Carefully align the upper and lower edges of the line card with the upper and lower guides in the chassis, and slide the line card into the slot, so that it firmly seats in the backplane connectors (Figure 4).
Figure 4 Inserting the TCC+ Card
Step 3 Secure the line card in the chassis by tightening the top and bottom captive screws (Figure 2).
Caution Always tighten the captive screws on each TCC+ card. These screws prevent accidental removal and provide proper grounding for electromagnetic interference (EMI) shielding.
Step 4 When fully inserted, the TCC+ card cycles through its power-on self-test. The Fail LED stays on briefly (about 5 to 6 seconds) and then shuts off. If the Fail LED remains on or is flashing, see the "Troubleshooting the Cisco TCC+ Card" section.
Step 5 Connect the T1 clock cables to the TCC+ card.
Step 6 Configure the TCC+ card, if necessary.
Refer to "Formatting Flash Memory Cards and Disks" section in the Cisco uBR10012 Universal Broadband Router Hardware Installation Guide or the Cisco uBR10012 Universal Broadband Router Software Configuration Guide, see the "Related Documentation" section.
Note It is not necessary to configure the TCC+ card if you are installing a replacement card in the identical slot. The system automatically downloads the necessary configuration information from the performance routing engine (PRE).
Troubleshooting the Cisco TCC+ Card
Check the following if a problem appears on one of the PRE modules:
•If both PREs are operating correctly, check the POWER LEDs on each TCC+ card. Are the POWER LEDs on each TCC+ card on (green)?
–If no, remove the TCC+ card and reinsert it, making sure that it firmly connects to the backplane and that both captive screws are tightly connected.
–If yes, proceed to the next step.
•Is the STATUS LED on the primary TCC+ card on (green) to indicate that it is the primary card?
Is the STATUS LED on the secondary TCC+ card flashing (green) to indicate that it is the redundant card?
–If no, check that the version of Cisco IOS you have loaded on the router supports the TCC+ card.
•Do the CMTS modems go offline and are unable to get into the init() state?
–If yes, check whether a DOCSIS Timing Interface (DTI) clock source is connected to the TCC+ card, and remove the DTI clock source.
Use Table 3 to continue troubleshooting the TCC+ cards.
Cisco uBR10012 Universal Broadband Router Hardware Installation Guide at the following URL:
Cisco uBR10012 Universal Broadband Router Software Configuration Guide at the following URL:
Cisco CMTS Feature Guide at the following URL:
Obtaining Documentation and Submitting a Service Request
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