Introduction
8
User’s Manual - DSP19.2 Fast Poll Modem
Applications
The DSP19.2 modem is designed for point-to-point and multipoint data communications.
Figure 1-1 shows a typical point-to-point configuration using the DSP19.2 modem and
Figure 1-2 shows a typical multipoint configuration using the DSP19.2 modem.
Workstation
Modem
Modem
Remote Terminal
Figure 1-1. Point-to-Point Network Using the DSP19.2 Modem
Workstation
Modem
Modem
Modem
Modem
Modem
Modem
Remote Terminal
Remote Terminal
Figure 1-2. Multipoint Polling Network Using the DSP19.2 Modem
There are a number of factors that can affect the modem’s operation and performance.
These include:
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Modem speed (i.e. bit error rate, transmission line distance)
y
2-wire or 4-wire configuration
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Transmission line characteristics, noise, and line impairments
y
Network configuration (point-to-point or multipoint)
