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The ADTRAN ESU 120e™ is a modular, full featured
E1-Fractional E1 Multiplexer that supports a wide range of
end-user applica-tions.
Providing a flexible data
port and a G.703 Drop port, the ESU 120e supports
international applications combining digital voice and
high-speed data. For application flexibility, the ESU 120e can
utilize most ADTRAN TSU family data modules in the single
expansion slot. The embedded Simple Network Management
Protocol (SNMP) allows for complete monitoring and control
over the ESU 120e through both a SLIP and a 10BaseT Ethernet
interface.
A key feature of the ESU 120e is the support of future
growth through the unit’s single expansion slot. End-user
upgradeable expansion modules allow for the connec-tivity of
up to four additional DTE devices. These expansion modules and
plug-on modules allow for several interface port combinations,
including the integration of Frame Relay over E1 facilities
and the ability to implement Dial Backup in case of E1 line
failure. To add to the unit’s flexibility, an IP/IPX router
module is available, allowing the support of integrated
routing for branch office connectivity or Internet access. The
large variety of available expansion modules allow the ESU
120e to tailor fit most any voice and data application
requirements.
The unit has several built-in test func-tions for testing
and trouble shooting the ESU 120e and the E1 circuit. Users
can effectively isolate problems within the E1 circuit by
utilizing standard loopback tests, DTE tests, network
interface tests and test patterns found in the ESU 120e. For
addi-tional troubleshooting, the unit supports external test
equipment through bantam jack access. In case of an E1 failure
or other major unit or network alarms, the ESU 120e supports
SNMP Traps and Alarms to the host workstation and, if
necessary, dial-outs to pagers.
The configuration and management of the ESU 120e is
available through a variety of methods. The ESU 120e supports
SNMP with Gets, Sets, and Traps functionality through a
built-in agent. ADTRAN MIBs support management for the ESU
120e and all installed expansion modules. For access to SNMP
features, the ESU 120e has both a 10BaseT Ethernet and a SLIP
connec-tion.
In addition to SNMP, the unit utilizes the management
capabilities found in optional software products from ADTRAN.
For Windows® 95 or NT, the popular T-Watch PRO™ software
pack-age facilitates easy configuration and mon-itoring of the
ESU 120e. For more complex network manage-ment systems,
ADTRAN’s ADVISION™ operates on an SNMP enterprise manage-ment
system such as HP OpenView® and provides full GUI
configuration and control via SNMP.
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