Cisco 4 Port ISDN NM-4B-U= ユーザーズマニュアル

Introduction
Prerequisites
      Requirements
      Components Used
      Conventions
Background Information
Product Numbers
Features
Feature Support
Platform Support
Configuration
Field Notices
Related Information

This document provides an overview of 4− and 8−Port ISDN BRI network modules.

There are no specific requirements for this document.

This document is not restricted to specific software and hardware versions.

The information in this document was created from the devices in a specific lab environment. All of the
devices used in this document started with a cleared (default) configuration. If your network is live, make sure
that you understand the potential impact of any command.

Refer to Cisco Technical Tips Conventions for more information on document conventions.

The 4− and 8−port ISDN BRI network modules provide various port densities for ISDN BRI connectivity.
The optional, integrated NT1 allows consolidated customer premises equipment (CPE) to provide
multifunction dial access server, router, and other capabilities within power branch office environments.

Four versions of ISDN BRI network modules are available. Each 4− and 8−port module has the option of an
S/T interface or an onboard NT1 for each port. Local static RAM (SRAM) is used for buffer descriptors and