User manual

61200314L1-1 Dual T1/PRI Module User Manual 1-1
Chapter 1
Introduction
DUAL T1/PRI MODULE OVERVIEW
The Dual T1/PRI Module (P/N 1200314L1) is a member of the ATLAS 550
family of integrated access products and provides two channelized T1 or
PrimaryRateISDN(PRI)interfaces. Eachinterfacecanoperateindependent-
ly in DS-1 or DSX-1 mode, and any port can serve as the primary or backup
timing source for the entire system.
The Dual T1/PRI Module combines with the ATLAS 550 Base Unit and oth-
erATLAS550modulestosupportrequirementscallingformultipleT1and/
or PRI circuits. You can install into the system as many Dual T1/PRI Mod-
ules as can be physically accommodated in the ATLAS 550 chassis.
Typical applications calling forATLAS 550and theDualT1/PRI Module in-
clude the following:
• Digital Access Cross Connect System (DACS). Any DS0 on any T1 cir-
cuit can be switched to any other DS0 on any other T1 circuit.
• T1BandwidthManagement.T1circuitscarryingvoice,data,video,and
other traffic can have their payload groomed and directed to the appro-
priate interface inside the ATLAS 550 system (see Figure 1-1).
• ISDN Access Switch. When combined with the Quad BRI/U Module
P/N1200315L1),theDualT1/PRIModulecancombinemultipleBasicRate
ISDN (BRI) circuits onto one or morePrimaryRate ISDN (PRI) circuits.
FUNCTIONAL DESCRIPTION
The Dual T1/PRI Module installs into any available option slot in the
ATLAS 550 chassis. You can view the status of the module itself, as well as
the circuits to which it interfaces, from the ATLAS 550 terminal menu,
accessible through either a VT-100 terminal connected to the ATLAS 550
Base Unit’s control port or through a Telnet session established through the
Base Unit’s Ethernet port. Use the terminal menu to configure the Dual T1/
PRI Module.