Cisco Cisco 1900 2900 3900 Series 8-Port Gigabit Ethernet HS-WIC with PoE 데이터 시트

 

 

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Data Sheet 

Cisco Multimode G.SHDSL Enhanced High-Speed 
WAN Interface Card for Cisco Integrated Services 
Routers Generation 2 with EFM/ATM Mode 

Cisco

®

 Integrated Services Routers Generation 2 (ISR G2) offer a wide variety of 

WAN connectivity modules to accommodate the range of application needs in 
customer networks. The single-port Cisco Multimode Four-Pair G.SHDSL Double 
Wide Enhanced High-Speed WAN Interface Card (EHWIC-4SHDSL-EA) offers 
G.SHDSL-based WAN connectivity using both 802.3ah Ethernet in the First Mile 
(EFM) and ATM modes on a single enhanced high-speed WAN interface card 
(EHWIC). Both modes are not supported simultaneously. This EHWIC will be used in 
modular routers that are deployed in small to medium-sized businesses (SMBs) and 
enterprise branch offices (Figure 1). 

Overview 

Designed to deliver high-speed Ethernet services over SHDSL access, the multimode G.SHDSL EHWIC offers 

symmetric data rates over one to four pairs of copper wire and supports both EFM and ATM modes. In order to 

achieve higher bandwidths, bonding of multiple pairs (4-wire, m-pair, Inverse Multiplexing over ATM [IMA], and 

EFM bonding) is supported. 

In EFM mode, the multimode G.SHDSL EHWIC allows bonding as defined by IEEE 802.3ah, and it is typically 

used in scenarios where individual links are aggregated using the 802.3ah loop aggregation. Depending on the 

amount of wire pairs in service, the data rates can be 1 x 5.7 Mbps up to 4 x 5.7 Mbps with Annexes F and G. The 

EHWIC complies with the 2BASE-TL standard, which is based on the IEEE 802.3ah EFM standard. The 2BASE-TL 

standard uses the technology standard based on ITU recommendation G.991.2 bis. 

In ATM mode, the multimode G.SHDSL EHWIC allows bonding of multiple pairs up to 4 pairs (8-wire) with 

increased bandwidth by using IMA or data interleaving with m-pair mode. In both IMA and m-pair modes, the 

multimode four-pair G.SHDSL EHWIC offer data rates up to 5.696 Mbps per pair and up to 22.784 Mbps over four 

pairs. Refer to Table 2 for the data rates supported by the multimode four-pair G.SHDSL EHWIC (EHWIC-

4SHDSL-EA) under different modes. 

The multimode four-pair G.SHDSL EHWIC cost-effectively allows service providers and enterprise customers to 

deliver Ethernet services to sites with no access to fiber by using bonded copper pairs with symmetrical bandwidth 

at rates up to 4 x 5.696 Mbps. These rates cover applications traditionally served by high-data-rate DSL (HDSL), 

single-line DSL (SDSL), T1, E1, and services beyond E1. 

The multimode four-pair G.SHDSL EHWIC together with the Cisco ISR G2 router provides businesses the 

necessary bandwidth for critical traffic such as voice and videoconferencing, and enables 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).