Instruction manual

MERLIN LEGEND Communications System Release 5.0
System Planning
555-650-112
Issue 1
June 1997
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 or Tip/Ring
Extension Jack
MLX
Extension Jack
Optical
Scanner
Fax