Installation guide
Table Of Contents
- Overview of Cisco Interface Cards
- Cisco 3700 Series Routers
- Cisco 3600 Series Routers
- Cisco 2600 Series Routers
- Cisco 1700 Series Routers
- Cisco 1600 Series Routers
- Cisco ICS 7750
- Cisco MWR 1941-DC Router
- Regulatory Compliance Information and Safety

Chapter 1 Overview of Cisco Interface Cards
Cisco 1600 Series Routers
1-38
Cisco Interface Cards Installation Guide
OL-1919-12
Table 1-6 lists the interface cards and their Cisco IOS release requirements.
Note The earliest supported release is not necessarily the recommended release. Refer
to the applicable release notes and hardware documentation for release
information specific to your interface cards.
Table Conventions:
• Limited lifetime releases—Only the listed releases support the interface card.
• T-train releases and mainline releases—The earliest release that supports the
interface card is listed. Unless otherwise indicated, all later releases support
the interface card.
Table 1-6 Cisco IOS Releases Required for Interface Cards in Cisco 1600 Series Routers
Interface Card
Cisco IOS Limited
Lifetime Releases
First Cisco IOS
T-Train Release
First Cisco IOS
Mainline Release
1-Port Serial (WIC-1T) 11.1(7)AA
11.2(4)XA
11.2(5)P
11.3(1)T 11.3(1)
1-Port ISDN BRI U
1
(WIC-1B-U)
1. 1-Port ISDN BRI U card is not available with Cisco 1603 or Cisco 1604 routers. The BRI U module does not require an
external Network Termination 1 (NT1) device.
11.1(7)AA
11.2(4)XA
11.2(5)P
11.3(1)T 11.3(1)
1-Port ISDN BRI S/T
2
(WIC-1B-S/T)
2. 1-Port ISDN BRI S/T card is not available with Cisco 1603 or Cisco 1604 routers. Some ISDN service providers require an
external Network Termination 1 (NT1) device to connect an ISDN S/T port to the ISDN line. If your service provider requires
this, you must provide the NT1.
11.1(7)AA
11.2(4)XA
11.2(5)P
11.3(1)T 11.3(1)
1-Port ISDN BRI S/T
3
Leased Line
(WIC-1B-S/T-LL)
11.2(9)P 11.3(1)T 11.3(1)
1-Port 54- or 64-kbps DSU/CSU
(WIC 1DSU-56K4)
11.2(9)P 11.3(3)T 12.0(1)
1-Port T1/F1 (WIC-1DSU-T1) 11.2(12)P 11.3(3)T 12.0(1)