The ADSL HWICs provide 1-port ADSL connectivity to a WAN. These HWICs, combined with the Cisco 1941 Integrated Services Router (ISR), Cisco 1861 Integrated Services Router, the Cisco 2900 series Integrated Services Routers, 3900 series Integrated Services Routers (ISRs),1841 ISR, 2800 and 3800 ISRs provide high-speed digital data transmission between customer premises equipment (CPE) and a central office. This enables service providers and resellers to offer additional services by supporting features for business-class security, voice integration, differentiated classes of service (CoS), and managed network access with Cisco IOS® Software. These value-added features, along with the manageability and reliability of Cisco IOS Software technology, provide the mission-critical networking that businesses require. Both the 1-port and 2-port HWIC cards are supported on the Cisco 1841, 1861, 2801, 2811, 2821, 2851, 3825, 3845, 1941, 2901, 2911, 2921, 2951, 3925 and 3945 ISRs. The 1-port HWICs are supported starting with Cisco IOS Software Release 12.4(4)T and the 2-port HWICs are supported starting with Cisco IOS Software Release 12.4(6)T on the Cisco 1841, 1861, 2801, 2811, 2821, 2851, 3825, 3845 ISRs. The 1-port and 2-port HWICS are supported starting with Cisco IOS Software Release 15.0(1)M for 1941, 2901, 2911, 2921, 2951, 3925 and 3945 ISRs. The ITU accepted the ADSL2 standard in July 2002 and the ADSL2+ standard in January 2003. 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. The 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. The Annex M for G.992.3 (ADSL2) and G.992.5 (ADSL2+) was consented on October 2003. The Annex M for for G.992.3 (ADSL2) and G.992.5 (ADSL2+) contains PSD Masks for new ADSL2 service over POTS that increases the upstream data rates by doubling the number of US tones to 64. As a result, Annex M provides higher upload speeds for users by doubling the upstream data rate (when compared to Annex A) under certain loop and noise conditions.
- Condition:
-
New
- Availability:
- 0
- Manufacturer:
- Cisco
- Product ID:
- HWIC-ADSLI-B/ST
- Product Description:
- 2-port HWIC w/ 1-port ADSLoISDN and 1-port ISDN BRI-S/T
- Product Type:
- HWIC
- ApplicationUsage:
- Wide Area Network
- InterfacesPorts:
- 1 x RJ-11 ADSLoISDN WAN, 1 x ISDN BRI (S/T) WAN
- Data Transfer Rate:
- 24 Mbps ADSL2+ Downstream
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