Specifications

2-18

Reference Guide

Model No.

Running Head

Data Modules and Applications Applications

Software-initiated diagnostics supported on the DS0-DP/G.703 card include the setting of

local loop backs towards either the network or the attached DTE equipment. In addition, a

remote loop back function allows the DS0-DP/G.703 card to generate four DDS-compatible

latching loop back codes for the far-end OCU, CSU, DSU or DS0-DP equipment respectively.

A time-out option authorizes the DS0-DP/G.703 port to automatically release the loop back

after ten minutes.

2.4.8 B7R IP Concentrator Card

The 8228

B7R IP Concentrator card provides a means of concentrating network management

data from up to 8 remote IADs onto a single asynchronous SLIP link for connection to a NMS.

Normally, the NMS is LAN based and an asynchronous terminal server is also required to

interface the SLIP link to the LAN.

Management information from remote integrated access systems can be directed to the IADs

containing the 8228 over the Facilities Data Link (FDL) or an ESF T1 link as shown in Figure

2-9. FDL is a 4 Kbps channel normally used to manage the T1 link. When the FDL is used to

carry management data it is no longer able to carry T1 management data as well.

Figure 2-9. B7R Card used for Network Management

Terminal Server

4Kbps

FDL

38.4Kbps

NMS

Up to 8 DS0s

DACS

IAD