Cisco Universal Broadband Router Line Cards

Cisco uBR-MC 16E Universal Broadband Router Line Data Sheet

Data Sheet

Cisco MC16E Universal Broadband Router Line Card

The Cisco® MC16E 8-MHz Universal Broadband Router line card allows the Cisco uBR7246VXR to support European Data Over Cable Service Interface Specifications (EuroDOCSIS) (Figure 1). The card enables cable operators worldwide that use 8-MHz channel plans and want greater frequency options for the return-path spectrum to optimize their EuroDOCSIS networks. The Cisco MC16E supports the International Telecommunications Union (ITU) J.83 Annex A standard. The card is EuroDOCSIS 1.1-qualified.

Figure 1
Cisco MC16E Line Card

The Cisco MC16E is an example of the attention Cisco Systems® gives to worldwide cable markets and to customers outside the United States. With this card, Cisco offers another choice for data-over-cable standards, where cable operators can offer data and video services in EuroDOCSIS environments to standards-based, low-cost cable modems and set-top boxes. The Cisco MC16E 8-MHz line card builds on the DOCSIS standard, adding support at the physical layer (PHY) for Phase Alternating Line (PAL) and Systemme Electronique Couleur Avec Memoire (SECAM) channel plans. The Cisco MC16E offers a similar port configuration to the Cisco MC16C line card, with one downstream and six upstream ports. The card differs, however, from the Cisco MC16C card by offering a greater upstream spectrum range of 5 to 65 MHz and an increased downstream channel width of 8 MHz.

Other Cisco cable line cards that support EuroDOCSIS include the Cisco 5x20U and 5x20 Broadband Processing Engine for the Cisco uBR10012, and the Cisco uBR7200 Series MC28U, MC16U, MC28X, and MC16X Broadband Processing Engine for the Cisco uBR7246VXR. For more information on these products, refer to their respective data sheets.


  • Provides EuroDOCSIS-based data services to set-top boxes and cable modems
  • Flexible delivery of voice and data services from a single cable modem termination system (CMTS)

Table 1   Features and Benefits

Feature Benefits
Provides 5- to 65-MHz frequency range on the upstream ports, offering an additional 23 MHz of spectrum for return-path service
  • Reduces scarcity of upstream bandwidth
  • Provides a greater range of channel choices for finding a clean upstream channel
Translates the volume economies of DOCSIS customer premises equipment (CPE)—set-top boxes and cable modems—into cable markets with 8-MHz channel plans
  • Translates the DOCSIS CPE economies of scale through interoperable multivendor CPE products
Gives cable plants running Annex A more efficient use of their available plant spectrum
  • Offers better utilization of available channel bandwidth and increased downstream throughput capacity on an individual channel
Provides IF output compliant with European upconverters (36.125 MHz); interoperates with existing 8-MHz upconverters
  • Responsive to non-U.S. customer requirements
Software is upgradable to DOCSIS 1.1
  • Supports advanced functions and allows DOCSIS 1.0 and DOCSIS 1.1 modems and set-top boxes to coexist in the same upstream channel
Baseline privacy interface (BPI) and extensions to BPI (BPI+) provide secure link-layer communication over a shared hybrid fiber-coax (HFC) cable physical medium
  • Offers security
Supports all DOCSIS and EuroDOCSIS-required Management Information Bases (MIBs)
  • Offers advanced network management

Technical Specifications

Downstream PHY

  • Downstream PHY-enhanced ITU J.83 Annex A, with convolutional and Reed-Solomon Forward Error Correction (FEC)
  • Variable depth interleaving (I, J): (8, 16), (16, 8), (32, 4), (64, 2), (128, 1)
  • Output impedance: 75 ohms nominal
  • Connector: F-connector per [IPS-SP-406]

Table 2   Downstream PHY Values

Modulation Channel Width Line Bit Rate Effective Bit Rate

64 quadrature amplitude modulation (QAM) (6 bits/sym)

8 MHz

40.44 MHz

-36 Mbps

256 QAM (8 bits/sym)

8 MHz

57.2 MHz

-57 Mbps

Upstream PHY

The following parameters are supported and transmitted to the cable modems by the CMTS:

  • Symbol rates of 160, 320, 640, 1280, and 2560 ksym/sec
  • Modulation: Quaternary phase shift keying (QPSK) and 16 QAM
  • Upstream frequency range: 5 to 65 MHz, edge-to-edge
  • FEC length (T = 0 to 10)
  • Calibrated and widely adjustable upstream voltage level
  • Total input power: less than 35 dBmV
  • Operating power range: bursts within ±6 dB of commanded level
  • RF performance stable to ±1.5 dB across -5 to 50°C
  • RF spurs less than 5 mV on all inputs and output

Table 3   Upstream PHY Values

Symbol Rate Channel Bandwidth Bit Rate (QPSK) Bit Rate (16 QAM) Input Power Ranges

160 ksym/sec

200 kHz

290 kbps

580 kbps

-16 to +14 dBmV

320 ksym/sec

400 kHz

580 kbps

1160 kbps

-13 to +17 dBmV

640 ksym/sec

800 kHz

1150 kbps

2300 kbps

-10 to +20 dBmV

1280 ksym/sec

1600 kHz

2300 kbps

4600 kbps

-7 to +23 dBmV

2560 ksym/sec

3200 kHz

4600 kbps

9200 kbps

-4 to +26 dBmV

Power requirements

  • Heat dissipation: 30W
  • 120 to 240 VAC

Physical configuration

  • Dimensions (H x W x D): 1.35 x 13.50 x 10.56 in. (3.43 x 34.29 x 26.82 cm)

Universal chassis environmental specifications

  • Operating temperature: 32 to 104°F (0 to 40°C)
  • Nonoperating temperature: 4 to 149°F (-20 to 65°C)
  • Relative humidity, noncondensing: 10 to 90 percent; 20 cfm