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Cisco uBR10-LCP2-MC16C/MC16E/MC16S Cable Interface Card for the Cisco uBR10012 Router
OL-2872-02
Cisco uBR10-LCP2-MC16C/MC16E/MC16S Overview
The default modulations are:
• 64 quatrature amplitude modulations (QAM) for downstream.
• quadrature amplitude phase-shift keying (QPSK) for upstream.
DOCSIS and EuroDOCSIS Data Rates and Modulation Schemes
Cisco cable interface line cards are configured in a number of different upstream combinations based on
the card used, your cable network, and the anticipated subscription and service levels. Table 2 lists the
data rates and modulation schemes for both DOCSIS and EuroDOCSIS standards.
Cisco uBR10-LCP2-MC16C
The Cisco uBR10-LCP2-MC16C cable interface line card output is +42 dBmV +/– 3 dB and supports
all DOCSIS upstream channel widths described in Table 2. The card is configured identically to the
Cisco uBR-MC16C cable interface line card.
Note The configuration information for the Cisco uBR10-LCP2-MC16C is the same as the information for the
Cisco uBR10-LCP2-MC28C/Cisco uBR-MC28C, except that there are fewer upstream and downstream
ports. Refer to the configuration guides.
For Cisco IOS software requirements see the “Obtaining Documentation” section on page 29.
For configuration information, refer to Configuring the Cisco uBR-MC28C Cable Modem Card,
available on the documentation CD-ROM and Cisco.com at the following URL:
http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_r_sw/flmc28.htm
Refer to the Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide at the
following URL:
http://www.cisco.com/univercd/cc/td/doc/product/cable/cab_rout/index.htm
Table 2 DOCSIS and EuroDOCSIS Upstream Data Rates
Upstream Channel
Width
Modulation
Scheme
Baud Rate
Sym/sec
Raw Bit Rate
Mbit/sec
Throughput
(Bit rate - Overhead)
Mbit/sec
3.2 MHz 16 QAM(4)
QPSK (2)
2.56 M 10.24
5.12
9.0
4.6
1.6 MHz 16 QAM(4)
QPSK (2)
1.28 M 5.12
2.56
4.5
2.3
800 kHz 16 QAM(4)
QPSK (2)
640 k 2.56
1.28
2.3
1.2
400 kHz 16 QAM(4)
QPSK (2)
320 k 1.28
0.64
1.2
0.6
200 kHz 16 QAM(4)
QPSK (2)
160 k 0.64
0.32
0.6
0.3