Figure 1-1. Point-To-Point Circuit - ADTRAN ATLAS 810 Plus User Manual

Chapter 1. Introduction
1-2
The ATLAS modules include the following:
• HDLC Module
• Quad T1/PRI Module
• Octal Basic Rate ISDN Module
• T3 Module
• Async-232 Module
• Modem-16 Module
Frame Relay
Frame relay is a packet-switched service that allows efficient transfer of
bursty traffic in a WAN environment. It offers lower-cost data transfer when
compared to typical point-to-point applications. Using virtual connections
within the frame relay network and combining those into a single physical
connection at each location result in lower cost. Frame relay providers use a
frame relay switch to route the data on each virtual circuit to the appropriate
destination. Figures 1-1 and 1-2 illustrate a conversion from a typical point-
to-point application to a frame relay application.
ATLAS 810
PBX
Router
PLUS
ATLAS 810
Frac T1
PLUS
Frac T1
Frac T1

Figure 1-1. Point-to-Point Circuit

User Manual
Router
PBX
Router
PBX
Router
PBX
61200266L1-1