Data Sheet

Data Sheet
© 2008 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. Page 9 of 16
Product Description
DSL Specifications
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ST-Microelectronics 20190 chipset
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Supports ADSL over basic telephone service with Annex A and Annex B ITU G. 992.1
(ADSL), G.992.3 (ADSL2), and G.992.5 (ADSL2+)
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Supports ADSL over basic telephone service with Annex M (extended upstream
bandwidth) G.992.3 (ADSL2) and G.992.5 (ADSL2+) for Cisco 1801 only
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G.992.1 ITU G.DMT support
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G.994.1 ITU G.hs negotiation
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Support for Reach-extended ADSL2 (G.922.3) Annex L
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Complies with T1.413 ANSI ADSL DMT issue 2
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DSL Forum TR-067
The chipset does not provide interoperability with carrierless amplitude modulation/phase
modulation (CAP)-based ADSL lines
Annex A and Annex B are supported starting with Cisco IOS Software Release 12.4(4)T.
Annex M is supported starting with the special Cisco IOS Software Release 12.4(11)XJ.
The ADSL2 standard (ITU G.992.3) adds new features and functions targeted at
improving ADSL performance and interoperability. In addition, the standard adds support
for new applications, services, and deployment scenarios. Among the changes are
improvements in data rate and reach performance, rate adaptation, improved diagnostics,
and power enhancements. The conventional ADSL standard (ITU G.992.1) provides
downstream data rates of up to 8 Mbps and upstream data rates of up to 0.8 Mbps, and
ADSL2 provides higher downstream rates of up to 12 Mbps and upstream data rates of up
to 1 Mbps.
The ADSL2+ standard (ITU G.992.5) doubles the bandwidth used for downstream data
transmission, effectively doubling the maximum downstream data rates, and achieving
downstream data rates of up to 24 Mbps and upstream data rates of up to 1.5 Mbps.
ITU G.992.3 Annex M adds capabilities for extended upstream bandwidth above 2.0Mbps.
This allows carriers and enterprises to cover applications traditionally served by T1, E1,
G.SHDSL without overhauling the transport infrastructure. Exact data rates vary
depending on the distance from the DSL access multiplexer (DSLAM), DSLAM type, line
card and chipset, and firmware, noise profile, quality of copper, etc. The reach-extended
ADSL2 standard (G.992.3) Annex L increases performance on loop lengths greater than
16,000 feet from the Central Office.
ADSL Digital Subscriber Line
Access Multiplexer (DSLAM)
Interoperability
The Cisco 1801 is interoperable with the
following DSLAMs:
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Cisco 6130 and Cisco 6260 IP DSL
switches
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Alcatel (ASAM 1000 and 7300)
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Lucent Stinger (24- and 72-port line
cards)
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ECI HiFocus (16- and 32-port line
cards)
The Cisco 1802 is interoperable with the
following DSLAMs:
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Cisco 6260
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Alcatel (ASAM 1000 and 7300)
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Siemens (XpressLink 2.0 and
XpressLink 2.1)
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Lucent Stinger (48-port line cards)
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ECI HiFocus (16- and 32-port line
cards)
G.SHDSL Port One G.SHDSL port on Cisco 1803 supports either 2-wire mode or 4-wire mode. The Cisco
1803 supports the same standards as the Cisco G.SHDSL WIC and is based on ITU
Recommendation G.991.2 (accepted worldwide).
G. SHDSL DSLAM
Interoperability
The Cisco 1803 in 2-wire mode is
interoperable with the following DSLAMs:
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Cisco 6000 Series IP DSL switches
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Alcatel ASAM 7300 (12- and 24-port line
cards)
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ECI HiFocus SAM 2401 (16-port
Metalink-based line cards)
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Lucent Stinger FS (32- and 48-port line
cards)
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CopperEdge 200 DSLAM (24-port line
cards)
The Cisco 1803 in 4-wire mode is
interoperable with the following
DSLAMs:
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Alcatel ASAM 7300 (12- and 24-port
line cards)
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CopperEdge 200 DSLAM (24-port
line cards)
DOCSIS The Cisco 1805-D and Cisco 1805-D/K9 have an integrated CableLabs DOCSIS 2.0
certified cable modem.
10/100 WAN Ports 10/100BASE-T ports for WAN connection supporting DSL and cable modems and
Ethernet access services. (One port is available on Cisco 1801, 1802, and 1803. Two
ports are available on Cisco 1811 and 1812.)
10/100 LAN Switch Eight 10/100BASE-T fully managed switch ports with 802.1Q VLAN and 802.3af PoE
support
USB Ports Two (USB 2.0) on Cisco 1811 and 1812 only. The Cisco 1801, 1802, and 1803 do not
offer USB support.
ISDN S/T BRI Port One ISDN S/T BRI port on Cisco 1801, 1802, 1803, and 1812