Cisco 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card
This highly flexible interface card facilitates several important applications:
• WAN access and aggregation
• Legacy protocol transport
• Dial access server
WAN Access and Aggregation
Serial interfaces can be used to provide WAN access for remote sites. With support for serial speeds up to 8 Mbps per port, the 2-port serial HWIC is ideal for low- and medium-density WAN aggregation.
The HWIC-1DSU-T1 also offers an integrated CSU/DSU, simplifying configuration and management. Integration allows management of the router and CSU/DSU as a single SNMP entity while also providing detailed troubleshooting capabilities. Troubleshooting features include self-test, loopbacks, CSU/DSU reset, alarm counters, and T1 statistics.
Legacy Protocol Transport
Serial and synchronous/asynchronous ports are ideally suited to transport legacy traffic across a TCP/IP network, facilitating network convergence and eliminating costly separate leased lines for this traffic. Legacy protocols supported by Cisco IOS® Software include:
• Systems Network Architecture (SNA) and Synchronous Data Link Control (SDLC) Protocol
• Binary Synchronous Communications Protocol (Bisync)
• X.25 Protocol
Dial Access Server
Asynchronous HWICs can connect to external dial modems to provide low-density dial access servers