Specifications

Introduction

MP2100M-LS-2 Modules - Installation and Operation Manual 1-3

Main Features

This section describes the main features of the modules offered in the LS-2 series.

MTLS-2 and LS-2A Modules

The MTLS-2 and LS-2A modules include three versions of modules, identified

by /X.50, /X.58, and /SDM. The MTLS-2 and LS-2A modules support both

synchronous and asynchronous operation.

MTLS-2/X.50, These modules use a sub-multiplexing technique

LS-2A/X.50 compatible with ITU-T Rec. X.50, Division 3, and

ITU-T Rec. X.54. An MTLS-2/X.50 and LS-2A/X.50

module has ten channel interfaces; two modules can

be operated as one group to allow the transmission of

twenty channels in one main link time slot.

Since the maximum payload carried by a main link

time slot under the ITU-T Rec. X.50 Division 3

multiplexing format is 48 kbps, one /X.50 module can

provide ten 4.8 kbps channels, and a group of two

/X.50 modules can provide twenty 2.4 kbps channels.

Other combinations of channel numbers and data rates

are allowable within the specified payload, as

explained in Section 1.2.

Figure 1-1 shows a typical application for

MTLS-2/X.50 modules.

X.50

Cross Connect

Switch

MEGAPLEX System

MTLS-2

MEGAPLEX System

MTLS-2

Figure 1-1. Typical Application for MTLS-2/X.50 Modules

MTLS-2/X.58, These modules use a sub-multiplexing technique

LS-2A/X.58 compatible with ITU-T Rec. X.58. An MTLS-2/X.58

or LS-2A/X.58 module has six channel interfaces. Up

to four modules can be operated as one group to allow

the transmission of up to 24 channels in one main link

time slot.

The maximum payload carried by a time slot under

the ITU-T Rec. X.58 multiplexing format is 57.6 kbps

(equivalent to 90% bandwidth efficiency). Therefore,

one /X.58 module can provide up to six 9.6 kbps