AT&T MERLIN LEGEND Communications System Key System Planning Forms Errata Manual de instrucciones Pagina 215

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MERLIN LEGEND Communications System Release 5.0
System Planning
555-650-112
Issue 1
June 1997
Data Communications
Page 5-9About Data and Video Communications
5
Modem Data-Only 5
This type of modem data station includes only DTE and a modem (see Figure
5-2). The modem connects to the control unit through an analog port on a T/R
module. If the modem does not provide dialing capability, a single-line telephone
can be connected to it to provide dial-out capability; however, the data station and
the telephone cannot be used simultaneously.
Figure 5-2. Modem Data-Only
Analog
Signal
Digital
Signal
Data Station
MERLIN
LEGEND
Control
Unit
DCEDTE
Credit Card
Verification
PC Terminal
Host
Computer
Modem
Single-line
Telephone
(if required for dialing)
Analog or Tip/Ring
Extension Jack
MLX 
Extension Jack
Optical
Scanner
Fax
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