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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
