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The Total Access® 850 is an integrated access device
designed for cost-effective deployment of voice and data
services at the customer’s premises.
The Total Access 850
benefits enterprise customers as well as inte-grated
communications providers, such as CLECs, ILECs and ISPs, who
require a customer premises device that integrates voice and
data functions, and provides a viable migration path from TDM
to packet-based technology.
The Total Access 850
features remote management, an integrated IP router, and
special services slots. Total Access 850 is a modular device
with two common slots and eight access slots. Common cards
required for operation are a power supply unit (PSU) and a
system control unit. System Control Units include either a
Bank Control Unit (BCU) or a Router Control Unit (RCU). With a
BCU, the Total Access 850 can be configured as a
cost-effective TDM channel bank. The BCU activates a T1
network interface and a fractional T1 (DSX-1) interface
located on the rear of the chassis.
The RCU is another system control option that offers TDM
functionality and a migration path to packet technologies
including ATM. The RCU also offers an integral IP router and
activates a Nx56/64 V.35 port on the rear of the chassis for
connecting an additional external data device. Additionally, a
variety of user modules are available for use with either the
BCU or RCU. Six access slots allow the user to combine a
variety of voice and data services. Up to six Quad FXS or Quad
FXO access modules can be installed to support up to 24 analog
voice lines. Other access modules for data applications
include the OCU DP and ISDN U-BR1TE. The other two access
slots are for future hardware options. Using local or remote
inband manage-ment, carriers can turn features, functions and
access ports on and off. Easy access to modules, common cards,
the power supply, and the optional battery back-up system
simplify maintenance procedures. Hot-swap-pable modules may be
replaced without disrupting other units. The
four-circuit-per-module design ensures that a maximum of only
four analog circuits are affected when replacing a module.
A compact, NEBS-compliant cabinet suit-able for the
customer premises or the central office provides added safety
and reliability. The 2U design uses a minimum amount of rack
space with an 8.5-inch by 11-inch foot-print the size of a
standard piece of notebook paper. Two Total Access 850 systems
can be mounted side-by-side in either 19-inch or 23- inch
relay racks. Pre-configured packages are available.
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