Introduction; Description - Black Box X.21 Guia De Inicio Rapido

2.1 Description

The X.21 Modem Eliminator replaces two
synchronous high-speed modems by permitting
direct port-to-port connection. It generates the
signal timing required for proper operation of the
two synchronous DTEs as well as the control and
indication signals necessary to emulate half- or full-
duplex operation.
Eight models are available:
• X.21 Modem Eliminator 56K with female
connectors and 120-VAC power supply
(ME131A-F)
• X.21 Modem Eliminator 56K with male
connectors and 120-VAC power supply
(ME131A-M)
• X.21 Modem Eliminator 56K with female
connectors and 230-VAC power supply
(ME131AE-F)
• X.21 Modem Eliminator 56K with male
connectors and 230-VAC power supply
(ME131AE-M)

2. Introduction

X.21 MODEM ELIMINATOR
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