4
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.
Refer to the
Cisco uBR7200 Series Universal Broadband Router Software Configuration Guide
at the
following URL:
http://www.cisco.com/en/US/docs/cable/cmts/ubr7200/configuration/guide/cr72scg.html
Cisco uBR10-LCP2-MC16E
The Cisco uBR10-LCP2-MC16E cable interface line card output is +40 dBmV +/– 3 dB and supports
all EuroDOCSIS upstream channel widths described in
Table 2 on page 4
. The card is configured
identically to the Cisco uBR-MC16E cable interface line card.
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
