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With support for Cisco 1800, 1900, 2800, 2900, 3800, and 3900 Series Integrated Services Routers, the HWIC-1DSU-T1 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card from Cisco offers single port T1 fractional connectivity. Designed to be the interface between a T1 line and on-site networking equipment this single port interface card supports WAN access and aggregation, legacy protocol transport, and dial access. Additionally, the HWIC-1DSU-T1 card features self test, loopbacks, CSU/DSU reset, alarm counters, and T1 statistics to provide administrators the necessary information to effectively monitor the status of the network.
• WAN access and aggregation
• Legacy protocol transport
• Dial access server
WAN Access and Aggregation
The HWIC-1DSU-T1 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 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
Table of Contents
Minimum IOS Releases, Feature Sets, and Licenses
Cisco 1800, 2800, and 3800 Series Integrated Service Routers
- Minimum Cisco IOS Software Release: 12.4(20T), 12.4(23), 12.4(15)T
- Minimum Cisco IPS Software Feature Set or License: IP base Cisco 1900, 2900, and 3900 Series Integrated Service Routers
- Minimum Cisco IOS Software Release: 15.0(1)M
- Minimum Cisco IPS Software Feature Set or License: IP base Supported Platforms and Quantities
- Cisco 1841: 2
- Cisco 1861: No
- Cisco 1941: 2
- Cisco 2801: 2
- Cisco 2811, 2821, 2851: 4
- Cisco 2901, 2911, 2921, 2951: 4
- Cisco 3825 and 3845: 4
- Cisco 3925 and 3945: 4
Yes Synchronous Maximum Speed (per Port)
1.544 Mbps Asynchronous Support
No Asynchronous Maximum Speed (per Port)
N/A Bisync Support
No Serial Protocols
N/A Network Clock Synchronization
Type 1/3 TelecommPTT
Industry Canada CS-03 Part II
FCC Part 15 Class A
ICES-003 Class A
EN55022 Class A
CISPR22 Class A
AS/NZSCISPR22 Class A
VCCI Class A
Temperature & Humidity
Operating Temperature: 32 to 104°F / 0 to 40°C
NEBS Short-Term Operating Temperature: 32 to 131°F / 0 to 50°C
Storage Temperature: -4 to 149°F / -20 to 65°C
Relative Humidity: 10 to 90%, non-condensing
0.8 x 3.1 x 5.6 in. / 2.1 x 7.9 x 14.2 cm
Not specified by manufacturer
Cisco HWIC-1DSU-T1 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card Review