Installation guide

Overview of Cisco WAN and Voice Interface Cards 1-7
Cisco 2600 Series Routers
Cisco 2600 Series Routers
The Cisco 2600 series is a multifunction platform that combines dial access, routing,
LAN-to-LAN services, and multiservice integration of voice, video, and data in the same
device. The Cisco 2600 series provides a low-entry price for medium-sized businesses. The
Cisco 2600 series has built-in LAN connections that provides a single or dual Ethernet port
(depending on model), one Ethernet, and one token ring port. Cisco 2600 series routers
also include one network module slot and two WAN slots that accept a variety of network
modules and interface cards. Figure 1-5 illustrates a Cisco 2611 router showing the
network module slot and WAN interface card slots.
2-Port ISDN BRI voice
interface
(VIC-2BRI-S/T-TE)
––––12.0(2)XD –
1 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.
2 The BRI U module does not require an external NT1.
3 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.
Table 1-1 WAN and Voice Interface Card Options with Cisco IOS Releases for Cisco 3600 Series
Routers (continued)
WAN Interface Card
Cisco IOS
Release
11.1
Cisco IOS
Release
11.2
Cisco IOS
Release
11.3
Cisco IOS
Release
11.3T
Cisco IOS
Release
12.0
Cisco IOS
Release
12.0T