Cisco UBR10-DTCC – Restore DOCSIS-Compliant Clock Redundancy on Your uBR10012 CMTS
The Cisco UBR10-DTCC is the DOCSIS Timing, Communication and Control card for the Cisco uBR10012 Universal Broadband Router. It acts as a secondary processor that keeps the whole headend in sync: in the default DTI mode it functions as a DTI client, receiving the 10.24 MHz clock and 32-bit DOCSIS timestamp from an external DTI Server and distributing it to every cable interface line card in the chassis; it can also run in free-running mode, deriving that same clock and timestamp from a Stratum 3 external reference connected to its front-panel RJ-45 ports. Cable operators and MSOs run two DTCC cards as an active/backup pair — required in Cisco IOS 12.2(33)SCB and later — so a card failure never interrupts service or forces cable modems to re-register. This is a used, tested unit for engineers replacing a failed or aging DTCC card, restoring a redundant pair, or building out a uBR10012 lab or test environment.
Key Features & Benefits
- Full DOCSIS Timing Compliance – Distributes the 10.24 MHz clock and 32-bit DOCSIS timestamp to every cable interface line card — received via DTI protocol from an external DTI Server in DTI mode, or derived from a Stratum 3 external reference in free-running mode.
- Built-In Redundancy – Designed to run as an active/backup pair — if the primary card fails, the backup takes over instantly with no loss of cable modem registration.
- Dual External Clock Inputs – Two RJ-45 DTI ports (Primary & Secondary) accept a Stratum 3 reference traceable to Stratum 1 for network-wide sync.
- Centralized Power & Status Control – Independently powers cable line cards on or off and continuously monitors chassis power supply usage.
- At-a-Glance System Status – Drives the front-panel LCD showing live configuration and status information for fast headend troubleshooting.
Technical Specifications
| Specification | Details |
|---|---|
| Model / Part Number | UBR10-DTCC= |
| Brand | Cisco |
| Product Family | uBR10012 Universal Broadband Router |
| Function | DOCSIS Timing, Communication & Control (DTCC) card |
| Clock Function | Distributes 10.24 MHz clock + 32-bit DOCSIS timestamp (DTI client mode) or derives it from external Stratum 3 reference (free-running mode) |
| External Clock Ports | 2x RJ-45 (Primary & Secondary, DTI1/DTI2) |
| Requires | PRE2 or later |
| Minimum IOS | 12.3(23)BC or 12.2(33)SCB and later |
| Redundancy Requirement | Two DTCC cards (active/backup) required in Cisco IOS 12.2(33)SCB and later |
| Dimensions | 4.73 in (H) x 1.548 in (W) x 10 in (D) — 12.01 x 3.93 x 25.4 cm |
| Weight | 1.5 lb (0.68 kg) |
| Power Consumption | 12 W (40.94 BTU/hr) |
| MTBF | 431,348 hours |
| Operating Temperature | 41°F to 104°F (5°C to 40°C) |
| Storage Temperature | -40°F to 158°F (-40°C to 70°C) |
| Relative Humidity | 5–85% operating / 5–95% storage |
| Operating Altitude | -197 to 13,123 ft (-60 to 4000 m) |
| Condition | Used – Tested |
Official Datasheet
Download the official Cisco UBR10-DTCC datasheet here: https://www.cisco.com/c/en/us/td/docs/interfaces_modules/cable/installation/dtcccard.html
