The Cisco 1-Port 4-Wire 56-/64-kbps CSU/DSU WAN Interface Card (HWIC-1DSU-56K4) performs the channel service unit/data service unit (CSU/DSU) functions for both digital data service (DDS) (dedicated) and 4-wire switched 56-kbps (56K) data networks. In addition, it provides an all-rate synchronous interface to any dedicated DDS point-to-point or multipoint network compatible with AT&T Publication 62310. The new card also supports 4-wire switched 56K data services such as AT&T's Accunet 56 or Sprint's VPN-56 plus many switched data services offered by local exchange carriers.
- General Information
 - Manufacturer
 - Cisco Systems, Inc
 
- Manufacturer Website Address
 - http://www.cisco.com
 
- Brand Name
 - Cisco
 
- Product Type
 - WAN Module
 
- Warranty
 - Limited Warranty
 - 90 Day
 
- Technical Information
 - Application/Usage
 - Wide Area Network
 
- Interfaces/Ports
 - Total Number of Ports
 - 1
 
- Connector Type
 - RJ-48S
 
- Interfaces/Ports Details
 - 1 x RJ-48S Serial Synchronous WAN
 
- Media & Performance
 - Network Technology
 - Serial
 
- Maximum Data Transfer Rate
 - 64 kbit/s
 
- Miscellaneous
 - Compatibility
 - 2900 Series Integrated Services Routers
 - 1900 Series Integrated Services Routers