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MERLIN LEGENDCommunications System Release 6.1
System Planning
555-661-112
Issue 1
August 1998
Data Communications
Page 5-8About Data and Video Communications
5
Analog Voice and Modem Data 5
This type of modem data station includes an analog multiline telephone, a
modem, and a DTE (a data terminal or PC) (see Figure 5–1
). The modem
connects to the control unit through the T/R interface of a General-Purpose
Adapter (GPA). The telephone connects to the system through an analog port on
the control unit.
The port configuration requires two adjacent odd/even extension jacks on a 408,
408 GS/LS, or 008 module in the control unit. The even jack is for voice and the
odd jack is for data. The bridging adapter joins the odd/even jack pair for
connection to the analog multiline telephone. The telephone provides the dialing
capability for the data station.
Figure 5–1. Analog Voice and Modem Data
Analog
Signal
Analog
Multiline
Telephone
Digital
Signal
Data Station
MERLIN
LEGEND
Control
Unit
DCEDTE
PC/Terminal
Host
Computer
MODEM
GPA
Analog Extension
Jacks (2)
MLX
Extension Jack
Optical
Scanner
Fax