Verilink DIU 2130 (880-503297-001) Product Manual - Manual (Page 11)

Verilink 1-1
Chapter
1
DIU 2130 Overview
This manual describes the operations and functions of the DIU
2130 Data Service Unit and its associated rear connector modules
(Data Interface Modules—DIMs) of the AS2000 system.
The DIU 2130 provides way to transmit high-speed data over the
network. It interfaces with two data ports operating at rates of 56
kbit/s, 64 kbit/s, or any multiple of either rate up to 1.344 or 1.536
Mbit/s. The DIU places these signals on the user-assigned DS0
channel time slots of the DS1 signal. It then sends the channelized
data to a CSU (NCC, SCC, TAC, or—with an NCM—a DIDCSU), where
the data is multiplexed onto the T1 line for network transmission.
In the opposite direction of transmission, the DIU 2130 receives the
incoming network signal from the CSU and passes the data to the
Data Terminating Equipment.
Figure 1-1 Typical DIU 2130 Application
Up to twelve DIUs and one NCC 2020, SCC 2020, or TAC 2010
provide carrier network access and T1 transmission for high-speed
data applications. If using the DIU 2130 DBU option at one timeslot
per Port 1, then it is possible to get up to 24 DIUs per CSU module.
The DIU interfaces with the associated CSU through a data bus on
the shelf backplane.
DIU 2130 T1 Dial Backup (DBU) Option
DIU 2130 56K Network Management System (NMS) Option
(DDS)
NCC
OR
TAC
DIU
2130
PORT 1 PORT 2
TO FAR-END
NCC OR TAC
AND DIU 2130
T1 NETWORK
CUSTOMER
DATA EQ CUSTOMER
DATA EQ