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Cisco multiservice access routers and integrated services routers offer a wide variety of WAN connectivity modules to accommodate the range of application needs in customer networks.Cisco multiservice access routers and...
Cisco multiservice access routers and integrated services routers offer a wide variety of WAN connectivity modules to accommodate the range of application needs in customer networks.
Cisco multiservice access routers and integrated services routers offer a wide variety of WAN connectivity modules to accommodate the range of application needs in customer networks. The new Cisco 1-Port G.SHDSL WAN Interface Card (part number WIC-1SHDSL-V3) offers G.SHDSL-based WAN connectivity for modular routers deployed in small to medium-sized branch offices.
OVERVIEW
The new G.SHDSL WAN interface card (WIC) provides 1-port symmetric high-bit-rate DSL (SHDSL) connectivity to a WAN. The modular routers that support the new card are the Cisco 1841, 2801, 2811, 2821, 2851, 3825, and 3845 series integrated services routers; the Cisco 1721, 1751, 1760, 2600XM, 3725, and 3745 series multiservice access routers; and the Cisco 2691 Multiservice Platform. The interface card is available on Cisco access routers, starting with Cisco IOS Software Release 12.4(3) Mainline and special Cisco IOS Software Release 12.4(2)XA. The first T-train image that will support the new interface card will be 12.4(3rd)T.
The new interface card is the latest G.SHDSL-based WIC for Cisco modular routers. It supersedes existing interfaces (part numbers WIC-1SHDSL and WIC-1SHDSL-V2) while maintaining feature parity with WIC-1SHDSL-V2. (Table 4 later in this document compares the three interface cards.)
G.SHDSL technology offers customers high-speed, symmetrical WAN connectivity at a lower monthly cost than most traditional WAN circuits. Using single or dual-pair copper wires, Cisco access routers with SHDSL interface card (part number WIC-1SHDSL-V3), can provide businesses the necessary bandwidth for critical traffic such as voice and videoconferencing, and can allow customers to save money by integrating voice and data traffic on the same WAN link. Service providers can increase subscriber revenue by bundling services and offering differentiated service levels through service-level agreements (SLAs).
A product of the ITU-T, SHDSL is the first standardized multirate symmetric DSL technology. It is designed to transport rate-adaptive symmetrical data across a single copper pair at data rates from 192 kbps to 2.3 Mbps, or 384 kbps to 4.6 Mbps over two pairs. This covers applications traditionally served by high-bit-rate DSL (HDSL), symmetric DSL (SDSL), T1, E1, and services beyond E1. G.SHDSL represents the worldwide-accepted DSL standard for symmetrical DSL, based on ITU recommendation G.991.2.
FEATURE SUMMARY
• Offers symmetrical WAN speeds up to 2.3 Mbps over a single copper pair and up to 4.6 Mbps over two copper pairs
• Based on ITU Recommendation G.991.2 (accepted worldwide)
• Supports Dying Gasp; uses power status bit (section 7.1.2.5.3 of G.991.2) for signaling
• Supports Wetting Current (Section A.5.3.3 of G.991.2)
• Supports G.SHDSL Annex A (U.S. signaling) and Annex B (European signaling)
• Multiple G.SHDSL WICs configurable per Cisco 1800, 2800, and 3800 and Cisco 1700, 2600XM, and 3700 router chassis
• Offers toll-quality voice over data with ATM Adaptation Layer 2 (AAL2) on Cisco 2800, 3800, 2600, and 3700 series routers; and AAL5 and voice over IP (VoIP) on the Cisco 1800, 2800, 3800, 1700, 2600, and 3700 series routers
• Supports extensive ATM classes of service (CoS) and IP quality of service (QoS)
• Operates back to back or with DSL access multiplexer (DSLAM)
• Sustains up to 23 virtual circuits per WIC
SYSTEM REQUIREMENTS
• The WIC is supported on all modular Cisco integrated services routers-the Cisco 1841, 2801, 2811, 2821, 2851, 3825, and 3845. It is also supported on the older multiservice routers-the Cisco 1721, 1751, 1760, 2600XM, 2691, 3725, and 3745 routers.
• The new WIC is supported on these access routers using the Cisco IOS IP Base feature set and up. For the Cisco 1700 Series, the minimum Cisco IOS Software feature set required to support the card is IP/ADSL or IP Base.
• The routers listed previously need to run Cisco IOS Software Release 12.4(3) Mainline and above or 12.4(2)XA to support the new WIC. The interface is also supported in Cisco IOS Software Release 12.4(3rd)T and above.
• The system requires no additional flash or DRAM memory other than the specified minimum memory for the Cisco IOS Software releases listed.
• No slot placement restrictions are placed for the new interface card on any of the platforms.
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