Multitech BL-Series Bedienungsanleitung PDF herunterladen (Seite 7)

RSU INSTALLATION MANUAL 5

Chapter 1.

Introduction

1.1. GENERAL

RSU, by definition, is the Remote Switching Unit of a geographically distributed

exchange being controlled by the parent exchange, which has the capability for local

switching. For all purposes, RSU is similar to a colocated BM in an MBM exchange.

The only difference in RSU and colocated BM is that RSU placed remotely will be

connected to parent exchange by digital trunks interface from CM to RSU via

respective MDFs and digital media while colocated BM is connected to CM by BM-

CM data cables and clock cables. Hence RSU is also termed as Remote Base Module

(RBM) and names `RSU' and `RBM' are interchangeably used in this document

wherever necessary. With the present hardware only an even number BM of MBM

(i.e. BM-2, BM-4, etc.) can be made as an RSU. Hence maximum number of RSUs

that can be supported in C-DOT DSS MAX and corresponding RSU cards required

are given in Table 1.

Table-1

RSU Cards

Configuration

Maximum

No. of RSUs

Supported

CM RBM

No. of Cards

Per RSU

MAX-L 8 ESL ETS 2ESL&2ETS

MAX-XL 16 ESM ETS 2ESM&2ETS

Since there will be no IOPs and ADP on RSU side, a CRP terminal can be extended

through modem for maintenance purposes. It should be clear that a Base Module in

C-DOT DSS MAX can be converted into a Remote Base Module (RSU) with

minimum changes.

Following are the changes required on RSU side and main exchange side for

connecting a RBM to main exchange.

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Multitech BL-Series Bedienungsanleitung Seite 7