Analog Voice And Modem Data - AT&T MERLIN LEGEND Release 3.1 System Planning Manual

About Data and Video Communications

Analog Voice and Modem Data

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.
DTE
Optical
Scanner
Fax
PC/Terminal
Host
Computer
Figure 5–1. Analog Voice and Modem Data
Data Station
DCE
Digital
Signal
MODEM
GPA
Telephone
MERLIN
LEGEND
Control
Unit
Analog
Signal Analog or Tip/Ring
Extension Jack
MLX
Extension Jack
Analog
Multiline
Data Communications
5–7