Installation; Figure 2. Connector Pin Assignments; Figure 3. Time Slot Assignments For 2B+D Service In Slc Mode I W/ D1D Counting - ADTRAN U-BR1TE III W/PWR Installation & Maintenance

Features
The U-BR1TE III w/PWR provides Basic Rate (2B+D)
ISDN service to remote locations over existing single
twisted pair wiring. The following is a list of the performance
features offered by the ADTRAN U-BR1TE III w/PWR.
• ISDN 2B1Q interface which meets all Layer 1
requirements as specified in ANSI T1.601-1992.
• Provides repeater power of 43 mA at -28 to -120 VDC.
• Provides 12 mA at -120 VDC for I-NIU.
• 18 kft nominal range on mixed gauge wire 42 dB @
kHz loop loss, 1300 ohms DC resistance design.
• Internal test pattern allows for testing of individual B
channels without requiring external test equipment.
• Transportation of ISDN Basic Rate 2B+D information
over T1 facilities in the 3-DS0 format specified in
TR-NWT-000397.
• All Layer 1 maintenance functions.
• Performance monitoring of the Layer 1 facility as
specified in TR-NWT-000397 and TR-TSY-000829.
• 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 may be initiated at the
U-BR1TE III w/PWR faceplate or from a remote
location through the maintenance channel.
• B1 and B2 loopback addressability at the faceplate for
the NT1 and up to six devices in the network-to-
customer direction.
• DS0 logic level transmit and receive data access
through faceplate bantam jacks.
• A built-in Cyclic Redundancy Check ( CRC ) clock
error detector allows for local performance monitoring
at the faceplate without test equipment.
• Addressing and error status with front panel LED
indicators. Test functions chosen by a front panel ten-
position rotary switch.
• Responds to OCU latching loopback in 2B, B1, and
B2 modes of operation.
The U-BR1TE III w/PWR is fully compatible in
functionality and is interchangeable with the following
units: U-BR1TE (1100.020L1, L3), U-BR1TE II
(1102.020L2), U-BR1TE II w/PWR (1102.020L4), and
the U-BR1TE III (1103.020L2).

2. INSTALLATION

After unpacking the unit, immediately inspect it for
possible shipping damage. If damage is discovered, file
a claim immediately with the carrier, then contact
ADTRAN Customer Service (see subsection 6). To
install the U-BR1TE III w/PWR, grasp the unit by the
faceplate and insert it into the backplane connector until
firmly seated. The faceplate latch will automatically
secure itself to the channel bank.
2
Physical Requirements
The U-BR1TE III w/PWR plugs into a single D4/SLC-96
channel slot.
illustrated in Figure 2. When provisioned for 2B+D
service, the U-BR1TE III occupies three time slots. In a
D4 or SLC-96 Mode III channel bank, it occupies the time
slot associated with the physical channel slot that it
occupies and the next two time slots to the right. The

Figure 2. Connector Pin Assignments

physical channel slots, whose time slots are used in this
manner, must remain unoccupied.
In an SLC-96 Mode I with D1D counting channel bank,
the time slots are allocated as shown in Figure 3 with two
time slots per physical channel slot.
PS1
UTS UTS
C1
LTS
UTS =
C1 =
C2 =
Figure 3. Time Slot Assignments for 2B+D
Service in SLC Mode I w/ D1D Counting
The unit uses two time slots in one physical slot and a
time slot from an adjacent slot when configured for 2B+D
operation. When optioned for Slot 1, 4, 7, or 10 operation,
the unit occupies the two time slots associated with the
physical slot in which it resides and the upper time slot
of the next adjacent physical slot.
When optioned for Slot 2, 5, 8, or 11 operation, the unit
occupies the lower time slot of the occupied physical slot
and the adjacent two time slots of the next physical slot
to the right. When using the Slot 2, 5, 8, or 11 option, the
Section 61103.020L4-5A, Issue 1
The connector pin assignments are
FRM GND
28 1
-12V
29 2
+5V GND
30 3
INCLK +12V
31 4
GND
32 5
TWD
6
33
TSP
34 7
TDATA TSQ
35 8
RNPCN
36 9
10
37
RCLK TDCLK
38 11
RWD NGATE
39 12
RSQ RSP
40 13
RNDIS
41 14
-48R
42 15
-48V
43 16
44 17
45 18
46 19
47 20
NSEIZE
48 21
49 22
50 23
R* T*
51 24
GND MCLK
52 25
53 26
27
54
PS2 PS3 PS4 PS5 PS6 PS7
UTS
C1 C2 C1
C2 *
LTS LTS
LTS = lower time slot
upper time slot
PS = physical slot
physical location of U-BR1TE
optioned as "slots 1, 4, 7, 10" (1 physical slot consists of 2 time slots)
* = Must be empty - time slots are being used
physical location of U-BR1TE
optioned as "slots 2, 5, 8, 11" by U-BR1TE card in C2
*2B1Q Signal
Terminals
PS8 PS9 PS10 PS11 PS12
C2 C1 C2
61103.020L4-5A