
Chapter 1. Introduction
Access Router
As an Access Router, the ATLAS 550 combines the functions of a T1 CSU/ DSU, an intelligent channel bank, a T1 Multiplexer, and DACS into a single platform. The ATLAS 550 is ideal for
PBX
ATLAS 550 using an external router.
Router
Frac T1 | Router |
TSU 100e
Frac T1
Router
TSU 100e
PBX
Frac T1 | Router |
|
TSU 100e
PBX
Figure 1-1. Point-to-Point Circuit with External Routers
Frame Relay/Router
The Frame Relay/Router features enable the Access Router to act as a voice/ data FRAD, a frame relay switch, and an IP router in addition to acting as an available bandwidth manager and a switch application.
Frame Relay
Frame relay is a
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