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The ADTRAN DSU III AR
is a technologically advanced, high performance data service
unit/channel service unit (DSU/CSU). This unit provides a reliable
interface between the digital data service (DDS) or 4-wire Switched 56
(SW56) network and the customer's data terminal equipment (DTE). The
unit is an all-rate DSU/CSU supporting synchronous and asynchronous data
rates on the primary channel and asynchronous data rates on the
secondary channel. The synchronous primary channel rates supported are
2.4, 4.8, 9.6, 19.2, 38.4, 56, and 64 kbps. Asynchronous data rates
supported are 2.4, 4.8, 9.6, 19.2, 38.4 and 57.6 kbps. Secondary channel
data rates of 75, 150, 300, 600, 1200, and 2400 bps are offered
depending upon the primary channel rate.
The DTE interface can be selected as
either EIA-232 or V.35 for all data rates. The secondary channel
interface is EIA-232 and is accessed through a separate connector.
Additional features of the DSU III AR
include a DTE-to-service rate matching feature for both dedicated and
switched modes, as well as various anti-streaming time-out values, to
disable streaming terminals on a multi-point circuit. Private networks
and modem tail circuits are accommodated through clocking/timing
options.
In the 4-wire SW56 mode, dialing
options include manual dialing, redialing, and dialing of stored
numbers. Dialing over the DTE interface is supported by use of an AT
command set or the V.25 bis in-band dialing protocol.
The unit responds to standard loopback
commands from the telephone company central office. In addition, the
user has several built-in test capabilities. These include V.54 remote
loopback, 2047 and 511 BERT test patterns, and four DDS stress patterns
(results of which are displayed on a two-line by 16-character LCD
display and seven LEDs). The standalone unit's front panel keypad
supports setup, selection of test modes, local and remote configuration,
manual dialing, or automatic dialing from stored numbers.
The rackmount unit can be configured
through the Smart 16/16e shelf controller card, from a local/remote VT
100 terminal or from an ADTRAN DATAMATE. The DSU III AR can also be
configured using AT or V.25 bis commands. A DC version of the standalone
unit is also available. The DSU III AR dc supports all the functionality
of the DSU III AR, except secondary channel.
Ordering Information
- DSU III AR standalone -
1202011L1
- DSU III AR rackmount -
1200034L1
- DSU III AR dc standalone -
1200270L1
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