Lucent Technologies MERLIN LEGEND Release 6.1 - Page 241

MERLIN LEGENDCommunications System Release 6.1
System Planning 555-661-112
Issue 1
August 1998
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