DSU IV ESP
All-Rate DSU with SNMP and Dial Backup
®
™
The ADTRAN DSU IV ESP is an all-rate
data service/channel service unit (DSU/CSU)
with an integral SNMP (simple network
management protocol) agent and optional
dial backup (DBU) capabilities. It provides
an interface between digital data service
(DDS) or 4-wire Switched 56 and the cus-
tomer’s data terminal equipment (DTE). The
DSU IV ESP provides access to traditional
dedicated point- to-point, multi-point, or
Frame Relay services.
The Dial Backup (DBU) feature of the DSU
IV ESP allows automatic or manual switched
backup in the event of a dedicated line failure.
The addition of DBU is accomplished through
a family of plug-in ESP DBU cards. There are
three versions of ESP DBU cards available for
the DSU IV ESP: ISDN,
Product Features
I Supports DDS rates from
2.4 to 64 Kbps including
19.2 and 38.4 Kbps
I 4-wire Switched 56
operation
4-wire Switched 56, and V.34 analog (max.
33.6 Kbps). Upon recognition of a failure(s),
the unit connects to the remote end using
the switched network. The user can choose
whether the unit automatically or manually
reverts to the dedicated circuit when it is
restored. Optional weekend and time of
day DBU lockout options are provided.
I Embedded SNMP
and Telnet
I Control port provides
SLIP/PPP access
to SNMP or VT100
The unit supports synchronous (2.4, 4.8,
9.6, 19.2, 38.4, 56, and 64 Kbps) and asynchro-
nous (2.4, 4.8, 9.6, 19.2, 38.4, and 57.6 Kbps)
data rates. Both EIA-232 and V.35 physical
interfaces are provided for connection to the
customer’s DTE equipment.
terminal configuration
I Two ESP option slots
I 10BaseT Ethernet SNMP
access port available
with ESP ethernet card
The unit responds to standard loopback
commands from the telephone company
central office. In addition, there are several
built-in test capabilities. Complete control,
configuration, and diagnosis are available
through a 16-key keypad and a two-line by
16-character LCD display. A VT100 terminal
configuration and control mode is also avail-
able through the control port. Flash download
capability allows for quick and easy installa-
tion of new features and enhancements.
I Automatic or manual
dial backup with
option modules
Embedded SNMP and Telnet are available
through SLIP (serial line internet protocol)
or PPP (point to point protocol) using the
integrated control port or through an optional
10BaseT ethernet port when configured with
the plug-in ESP ethernet card. Through the
Management Information Base (MIB)-II
standard and an ADTRAN-supplied enterprise
MIB, the DSU IV ESP can be configured,
monitored, and diagnosed using standard
SNMP network management programs
I Time of day and weekend
dial backup lockout
options
I Industry-leading five-year
North American warranty
®
®
such as HP OpenView , Netview , and
®
SunNet Manager.
100/10BaseT
Router
DSU IV ESP
100/10BaseT
SNMP
Management
Workstation
V.35
3
2
1
ENTER
LAN
6
5
4
CLEAR
9
M
8
ENTER
7
SHIFT
#
OME
COPY
*
CANCEL
ALA
RM
ERROR
TEST
OK
CSU
ALARM
TEST
OK
LE
MODU
ALARM
TES
T
56/64K
OK
SX
DSU/D
DDS/Frame
Relay
PSDN, PSTN or
ISDN Dial Backup
Router
100/10BaseT
3
2
1
ENTER
LAN
6
5
4
CLEAR
9
ALARM
8
ENTER
7
SHIFT
#
H
COPY
*
CANCEL
RM
ALA
ERROR
TEST
OK
V.35
SLIP
CS
U
ALARM
TEST
OK
LE
MODU
ALARM
56/64K
OK
TE
ST
SX
DSU/D
DSU IV ESP
SNMP
Switched Services
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