Verilink AS2000: The Basics (880-502981-001) Product Manual - Manual (Page 12)

Access System 2000 Overview
1-2 Verilink Access System 2000: The Basics
Figure 1-1 AS2000 System
AS2000 System
The AS2000 system consists of application modules and mating
connector interface modules (CIMs). Application modules fit into
the front shelf slots and house the processors required for the
designated application. The front panels contain status LEDs and
management ports.
Network and information ports reside on the rear connector
interface modules, which slide into a corresponding slot on the
back of the shelf. These ports are available with different types of
physical and electrical interfaces. The shelf unit contains a
controller bus and data bus for module recognition and data
transfer. Controller modules interface the entire node to software
management applications.
Shelf Units AS2000 shelf units house the network access modules, and can be
mounted in 19– or 23–inch equipment racks. The shelf units
contain the buses and power connections for the AS2000. There
are five types of shelf units available:
• Multi-line Shelves (MLS 2000, MLS 2200, and MLS 2200-4i)
• Quint-line Shelf 2500 (QLS 2500)
• Dual-line Shelf 2100 (DLS 2100)
User User
Router
Router
Router
Router
Video Video
PBX
X.21/RS-232
EIA 530
RS-449
V.35
HSSI
300 bit/s to 19.2 Kbit/s
56K
Nx56K
T1
NxT1/E1
NxT1/E1
T1/E1 FE1/FT1
PRI PRI
T3/E3
AS2000
AS2000
Carrier
Low
Speed
Host/FEP
Channel
Extension
Channel
Extension
SNMP
Manager
Private
Network
Services
Frame Relay
ATM
ISDN