ADTRAN Atlas 800 Plus, User Manual

Page: 105 / 210

61200226L1-1 ATLAS 800
PLUS
User Manual 9-1
Chapter 9
Dedicated Circuit Backup and Circuit Status
OVERVIEW
This chapter describes the configuration of dedicated circuits for backup and
discusses the
Circuit Status menu.
Dedicated Circuit Dial Backup Setup
In Figure 9-1, the host ATLAS 800
PLUS
has a fractional T1 of 16 DS0s going
to the T1 cloud, which is then DACSed out to two different remote sites, 8
DS0s each.
Figure 9-1. Dedicated Circuits Backup Configuration
Dedicated circuit backup allows the user to configure the ATLAS to dial up
a backup link when the dedicated link goes into alarm. Additionally, the AT-
LAS Nx 56/64 V.35 and USSI modules can rob an inband 8kbps channel over
which messages can be transferred. When the ATLAS loses communication
with the remote site, backup will be initiated. This feature is compatible
with the Inband Mode of the ADTRAN TSU series of products.
Currently, dedicated circuit backup is supported only for Nx interfaces
(V.35 or USSI) nailed to T1s.
T1
Network
Frac T1 8DS0s
Frac T1 16DS0s
PRI
4 BRIs
BRI
504K
512K
Frac T1 8DS0s
TSU 120e
ISU 128
TSU 120e
ISU 512
504K
512K
ISDN