Cisco Cisco 1900 2900 3900 Series 8-Port Gigabit Ethernet HS-WIC with PoE Installation Guide

Connecting ISDN BRI S/T High-Speed WAN Interface Cards to a Network

Cisco ISDN BRI S/T High-Speed WAN Interface Cards

Cisco IOS Release 12.5(1)

OL-14759-01

•

Cisco 2851 ISR

•

Cisco 3825 ISR

•

Cisco 3845 ISR

HWIC-4B-S/T LEDs

The HWIC-4B-S/T LEDs are shown in

Figure 1

. The HWIC-4B-S/T has two LEDs associated to an

interface. These LEDs are located in the top corners of each port. These LEDs indicate call activity on
the two ISDN BRI B channels, as described in

Table 1

Prerequisites for Connecting ISDN BRI S/T High-Speed WAN Interface Cards to
a Network

Before connecting an HWIC to the network, ensure that the HWIC is installed in the router, the
equipment is properly grounded, and you have the proper cables for connecting the HWIC to the
network. This section describes the preparation necessary before connecting an HWIC-4B-S/T to the
network.

Warning

The ISDN connection is regarded as a source of voltage that should be inaccessible to user contact.
Do not attempt to tamper with or open any public telephone operator (PTO)-provided equipment or
connection hardware. Any hardwired connection (other than by a nonremovable,
connect-one-time-only plug) must be made only by PTO staff or suitably trained engineers. Statement
23

Installing a Cisco ISDN BRI S/T HWIC

Install the Cisco ISDN BRI S/T HWIC according to the instructions in

Installing Cisco Interface Cards

in Cisco Access Routers

Grounding

Ensure that the equipment you are working with is properly grounded according to the instruction in

Installing Cisco Interface Cards in Cisco Access Routers

Table 1

HWIC-4B-S/T LEDs

LED

Description

Call active on B1 channel when LED is solid green.

Call active on B2 channel when LED is solid green.