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DSL Specifications
G.SHDSL (ATM mode) specifications (Cisco 888)
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Conexant/Ikanos Chipset
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2- and 4-wire modes
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Symmetrical WAN speeds up to 2.304 Mbps over a single copper pair and up to 4.608
Mbps over two copper pairs using ITU-T G.991.2 Annex A and Annex B
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Wetting current (Section A.5.3.3 of G.991.2)
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Dying gasp; uses power status bit (Section 7.1.2.5.3 of G.991.2) for signaling
G.SHDSL (EFM mode) specifications
(Cisco 888E)
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Conexant/Ikanos Chipset
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2-wire mode
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Symmetrical WAN speeds up to 2.304 Mbps over a single copper pair using ITU-T
G.991.2 Annex A and Annex B
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Symmetrical WAN speeds from 768 kbps to 5.696 Mbps over a single copper pair using
ITU-T G.991.2 Annex F and Annex G
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Symmetrical WAN speeds up to 22.784 Mbps over four copper pairs using IEEE 802.3ah
EFM bonding
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Wetting current (Section A.5.3.3 of G.991.2)
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Dying gasp; uses power status bit (Section 7.1.2.5.3 of G.991.2) for signaling
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Rate adaption
Multimode G.SHDSL (EFM/ATM) specifications
(Cisco 888EA)
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Lantiq Chipset
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4-pair support
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Compliance with standard based on ITU Recommendation G.991.2
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Support for G.SHDSL Annexes A (U.S. signaling) and B (European signaling)
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Support for Annexes F and G
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Symmetrical WAN speeds up to 1 x 2304 kbps over single copper pair, up to 2 x 2304
kbps over two copper pairs, up to 3 x 2304 kbps over three copper pairs, and up to 4 x
2304 kbps over four copper pairs using ITU-T G.991.2 Annexes A and B
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Symmetrical WAN speeds up to 1 x 5696 kbps over single copper pair, up to 2 x 5696
kbps over two copper pairs, up to 3 x 5696 kbps over three copper pairs, and up to 4 x
56964 kbps over four copper pairs using ITU-T G.991.2 Annexes F and G
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Support for EFM bonding; supports up to four SHDSL pairs bonding
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In ATM mode, support for maximum of 8 permanent virtual circuits (PVCs)
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Support for dying gasp and wetting current
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Support for point-to-point configuration
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Support for 802.1Q, QinQ, trunk, and VLAN tagging
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Support for ATM CoS and IP QoS features, 802.1P, and DSCP
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Support for EFM (IEEE 802.3ah) OA&M
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Ability to configure multiple G.SHDSL EFM EHWICs per Cisco 1921, 1941, 2900, and
3900 Series Routers
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Compliance with single RJ-45 connector system requirements
Table 14. Multimode DSL DSLAM Interoperability for Cisco 887VA
DSLAM VDSL2 over Basic Telephone Service Line-Card Chipset
ZTE 9806 Broadcom
Huawei MA5600 Broadcom
Table 15. Multimode DSL DSLAM Interoperability for Cisco 886VA
Siemens HIX 5300 Infineon
ECI 480 Infineon
Alcatel ASAM 7300 Globespan
(10 pages)
(39 pages)
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