The interface cards provide cost-effective basic telephone service connectivity to allow remote router management, asynchronous dial-on-demand routing (DDR) and dial backup, dial- and fax-out modem access, and low-density remote-access-server (RAS) services. Combined with the differentiated services delivered through Cisco IOS Software, the Cisco routers offer customers best-of-breed scalability, flexibility, and investment protection-all in cost-effective, multifunctional platforms.
Fax / modem
Max Transfer Rate
K56Flex, V.90, V.92
Protocols & Specifications
Bell 103, ITU V.21, Bell 212A, ITU V.22, ITU V.22bis, ITU V.29, ITU V.32, ITU V.32bis, ITU V.34, ITU V.17, ITU V.23, ITU V.27ter, ITU V.34bis, ITU V.33
Error Correction Protocol
MNP-4, ITU V.42, MNP-2, MNP-3
Data Compression Protocol
MNP-5, ITU V.42bis, ITU V.44
Max Fax Transfer Rate
Expansion / Connectivity
1 x phone line - RJ-11 ¦ 1 x phone line - RJ-11
1 x expansion slot
Dimensions & Weight
Min Operating Temperature
Max Operating Temperature
Humidity Range Operating
10 - 85%
Cisco 1841, 1861, 1861 Unified Communications Bundle, 1861E, 1921, 1921 ADSL2+ Bundle, 1941, 1941 Mobile Wireless, 1941 Secure WAAS Bundle, 1941 Security, 1941 WAAS Bundle, 2801, 2801 Unified Communications Bundle, 2801 Unified Communications Bundle with Advanced Security, 2811, 2811 Terminal Server Bundle, 2811 Unified Communications Bundle, 2811 Unified Communications Bundle with Advanced Security, 2811 WAN Application Acceleration Bundle, 2821, 2821 Branch Office in a Box Bundle, 2821 Secure WAN Optimization Bundle, 2821 Unified Communications Bundle, 2821 Unified Communications Bundle with Advanced Security, 2821 WAN Application Acceleration Bundle, 2821 WAN Optimization Bundle, 2851, 2851 Secure WAN Optimization Bundle, 2851 Unified Communications Bundle, 2851 Unified Communications Bundle with Advanced Security, 2851 WAN Application Acceleration Bundle, 2851 WAN Optimization Bundle, 2901, 2901 Secure WAAS Bundle, 2901 Terminal Server Bundle, 2901 Voice Security and CUBE Bundle, 2901 WAAS Bundle, 2911, 2911 Secure WAAS Bundle, 2911 UCSE Bundle, 2911 Voice Security and CUBE Bundle, 2911 WAAS Bundle, 2921, 2921 Secure WAAS Bundle, 2921 Voice Security and CUBE Bundle, 2921 WAAS Bundle, 2951, 2951 Secure WAAS Bundle, 2951 Voice Security and CUBE Bundle, 2951 WAAS Bundle, 3825, 3825 Branch Office in a Box Bundle, 3825 Secure WAN Optimization Bundle, 3825 SRST Voice Upgrades for HSEC Bundle, 3825 Unified Communications Bundle, 3825 Unified Communications Bundle with Advanced Security, 3825 WAN Application Acceleration Bundle, 3825 WAN Optimization Bundle, 3845, 3845 Branch Office in a Box Bundle, 3845 Unified Communications Bundle with Advanced Security, 3845 WAN Application Acceleration Bundle, 3845 WAN Optimization Bundle, 3925, 3925 Voice Security and CUBE Bundle, 3925 WAAS Bundle, 3925E, 3925E Voice Security and CUBE Bundle, 3945, 3945 PSRE Bundle, 3945 WAAS Express Bundle, 3945E
Cisco serial and asynchronous high-speed WAN interface cards
(HWICs) provide highly flexible connections for Cisco 1800, 2800, and 3800 series integrated services routers. These HWICS help customers enable applications such as WAN aggregation, legacy protocol transport, console server, and dial ...
Cisco integrated services routers offer a wide variety
of WAN connectivity modules to accommodate the range of application needs in customer networks. The Cisco 4-Port ISDN BRI S/T High-Speed WAN Interface Card offers BRI-S/T-port-based WAN connectivity for modular routers deployed ...
Cisco 1-port VDSL2/ADSL2+ EHWIC over POTS with Annex M
The Cisco multimode VDSL2 and ADSL2+ EHWIC (EHWIC-VA-DSL)
provides 1-port multimode VDSL2 and ADSL2+ WAN connectivity. This HWIC provides high-speed digital data transmission between customer premises equipment (CPE) and the central office (DSL access multiplexer), usually located on the telephone ...
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