Information
The Cisco WIC-1DSU-56K4 is a Wide Area Network Interface Card (WIC) module designed for Cisco routers. It provides a synchronous serial connection for connecting the router to a digital service unit (DSU) or data service unit (CSU) for WAN connectivity. The "56K4" in the model name refers to its maximum data transfer rate of 56 Kbps. This WIC module is commonly used for connecting to leased lines, Frame Relay networks, and other WAN connections.
Specifications
Data Rate
56 Kbps
Modem Support
No
Interface Type
Serial
ISDN BRI Support
No
ISDN PRI Support
No
Integrated CSU/DSU
Yes
Synchronous Support
Yes
Asynchronous Support
No
Multichannel Support
No
Maximum Number of Channels
1
Hardware Flow Control Support
Yes
Software Flow Control Support
No
Analog Signaling Protocol Support
Yes
Digital Signaling Protocol Support
No