HWIC-1ADSL-M Cisco 1-Port ADSL2/2+ Annex M WAN Interface Card (HWIC)

The HWIC-1ADSL-M is the Cisco 1-port ADSL2/2+ Annex M WAN interface card, the hardware for the ADSL2/2+ Annex M feature introduced in Cisco IOS Release 12.4(11)XJ. Annex M raises the upstream data rate to up to 3 Mbps, with downstream up to 24 Mbps. The extra upstream capacity comes from tones that Annex A uses for downstream, which leaves downstream rates lower in Annex M than in Annex A.

Annex M is set as the DSL operating mode with the dsl operating mode adsl2+ annex m command on the ATM interface. The feature is supported on Cisco 870 series, 1800 series and 2800 series routers, and the card was added alongside the Cisco 877 and Cisco 1801 routers. The card pairs with the ST Micro 20190P chipset and Cisco IOS Release 12.4(22)YB3 or later, and the DSLAMs in its interoperability table include the Alcatel ASAM7300, Ericsson EDA2.1, ECI Hi-Focus 480 and Lucent Stinger.

Cisco also sells router bundles that include the card: the C2801-ADSL2-M/K9 with 64 MB compact flash and 192 MB DRAM, and the C2811-ADSL2-M/K9 with 64 MB compact flash and 256 MB DRAM. The routers are the CISCO2801 Cisco 2801 router and the CISCO2811 Cisco 2811 router. More WAN cards are in Cisco interface cards.