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• Distinctive metallic DC test signature to identify
either line unit LT or line unit NT mode of
operation as specified in TR-NWT-000397
• Provides loopback capability for full 2B+D as
well as individual B channels in both loop and
carrier directions. Individual B channel
loopbacks, for the NT1 and up to six devices in
the Network-to-Customer direction, may be
initiated via the DB-9 VT100 craft interface on
the Total Access 750 BCU, Total Access 850
RCU, or the Total Access 1500 SCU, or from a
remote location through the maintenance
channel.
• DS0 logic level transmit and receive data access
through front panel bantam jacks
• Addressing and error status with front panel LED
indicators.
• Responds to OCU and CSU latching loopback in
2B, B1, and B2 modes of operation
• A front panel pushbutton allows toggling between
local provisioning via DIP switches and remote
provisioning via the local craft interface
2. INSTALLATION
C A U T I O N !
C A U T I O N
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
Remove the U-BRITE from the carton and visually
ensure that damage has not occurred during shipping or
handling. If damage has occurred, file a claim with the
carrier, then contact ADTRAN. Refer to Warranty
and Customer Service section.
Compliance Codes
Table 1 shows the compliance codes for the Total
Access 750/850/1500 U-BR1TE. This product is
intended to be installed in product providing a Type
"B" or "E" enclosure, and in a Restricted Access
Location.
Table 1. Compliance Codes
C
o
e d
o P
w
r e
C
o
e d
P (
) C
e T
e l
o c
m
m
n u
c i
i t a
n o
C
o
e d
n I
t s
l l a
i t a
n o
C
o
e d
I (
) C
2
I
p n
t u
O
u
p t
C
C
T (
) C
-
X
A
-
61180020L1-5, Issue 2
This device complies with Part 15 of the FCC rules.
Operation is subject to the following two conditions:
1. This device may not cause harmful interference.
2. This device must accept any interference
received, including interference that may cause
undesired operation.
Changes or modifications not expressly approved by
ADTRAN could void the user's authority to operate
this equipment.
Physical Requirements
The U-BR1TE plugs into a single Total Access
750/850/1500 channel slot. When provisioned for
basic rate service (2B+D), the U-BR1TE occupies
three time slots.
Interface Requirements
The U-BR1TE unit includes two interfaces. The
loop-side interface is an ISDN U-interface, which is
used to deliver Basic Rate service. The carrier-side
interface is a Total Access 750/850/1500 interface
which is used to insert data into the 1.544 Mbps T1
stream. Only the polarity-insensitive T and R leads
are used in the cross-connection. See Table 2 for
wiring interconnect details.
t u
61180020L1-5B
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