ADTRAN DE-4 U-BR1TE LI Instruction Manual

1Section 61410020L2-5, Issue 361410020L2-5C
Section 61410020L2-5
Issue 3, July 2001
C A U T I O N !
SUBJECT TO ELECTROSTATIC DAMAGE
OR DECREASE IN RELIABILITY.
HANDLING PRECAUTIONS REQUIRED.
CONTENTS
1. GENERAL ......................................................................1
2. INSTALLATION .............................................................2
3. CONFIGURATION .........................................................3
4. TESTING ......................................................................3
5. WARRANTY AND CUSTOMER SERVICE ...................6
FIGURES
Figure 1. DE-4 U-BR1TE II.................................................1
Figure 2. Position Switch Setting at Network Locations ....2
Figure 3. SW1, SW2, and SW6 Labeling ..........................3
Figure 4. Faceplate ............................................................5
TABLES
Table A. Faceplate LED Indicators ....................................3
Table B. SW1, SW2, and SW6 Option Settings ................4
Table C. Rotary Switch Options .........................................5
Table D. Specifications.......................................................7
Model ADTRAN DE-4 U-BR1TE LI
ISDN 2B1Q Interface for
Northern Telecom Channel Banks
Installation and Maintenance
Figure 1. DE-4 U-BR1TE II
Each list of the DE-4 U-BR1TE are interchangeable with
the Northern Telecom ISDN Channel Unit (NT4S10AA)
however, provisioning using the DE-4E Smart Transmit/
ReceiveUnit (STRU) interfaceis not supported. Features
of the DE-4 U-BR1TE L2 and L4 include:
• ISDN 2B1Q interface meets all Layer 1 requirements
as specified in ANSI T1.601-1992.
• Transports ISDN Basic Rate 2B+D information over
T1 facilities in the 3-DS0 format per TR-NWT-000397.
• 18 kft nominal range on mixed gauge wire (42 dB @
40 kHz loop loss, 1300 ΩDC resistance).
• Respond to all Layer 1 maintenance functions.
• Performance monitoring of the Layer 1 facility as
specified in TR-NWT-000397.
• Distinctive metallic DC test signature to identify either
line unit LT or line unit NT mode of operation.
• B1 and B2 addressability at the faceplate for a local
loopback, the NT1, and up to six devices in the
network-to-customer direction.
1. GENERAL
This practice provides installation and maintenance
information for the DE-4 U-BR1TE II L2, part number
1410020L2, and the DE-4 U-BR1TE II w/PWR L4, part
number 1410020L4. Figure 1 is an illustration of the
DE-4 U-BR1TE II.
The DE-4 U-BR1TE II L2 and L4 are line cards designed
to operate with the Northern Telecom DE-3/4/4E and
DE-4E SMART channel banks. Both lists of the DE-4 U-
BR1TE provide an ISDN U-interface allowing
transportation of Basic Rate ISDN (2B+D) over T1
carriers. This allows ISDN service to be extended
beyond the normal servicing range (18 kft) of an ISDN
ready switch. Either list of the DE-4 U-BR1TE 2nd
Generation may be used in the Central Office Terminal
(COT)location andin theRemote Terminal (RT)location.
Each list of the DE-4 U-BR1TE plugs into a single
physical slot but requires up to three consecutive time
slots when configured for 2B+D. Block error rate (BER)
performanceovertheT1 facilityis monitoredandavailable
to the network.
The DE-4 U-BR1TE II w/PWR L4 provides an ISDN 2B1Q
U-interface that will supply 43 mA to span power an
ADTRAN ISDN U-Repeater II or U-Repeater III.
Trademarks: Any brand names and product names included in this document are trademarks, registered
trademarks, or trade names of their respective holders.
LPBKCRTX
LPTX
NT1
AD1
AD6
AD5
AD4
AD3AD2
TEST
B2
B2
PTRN
NORM
1 2
Rx
Tx
DS-0
LOGIC
TSTERR
LPCR
ACT
UBR1TEII
1410020L2
O
N
1
2
O
N
1234
SW5 SW1
SW6 (Only on the L4)
SW2
SW4
SW3

2 Section 61410020L2-5, Issue 3 61410020L2-5C
•DS0 logic level transmit and receive data access
through faceplate bantam jacks.
•Faceplate LEDs indicate operational and test status.
Additional features to the L4 include:
•Provides repeater power of 43 mA at -28 to -120 VDC.
Each list of the DE-4 U-BR1TE has two interfaces. The
loop-side interface is an ISDN U-interface that transmits
and receives data simultaneous. Full-duplex over a
standard 2-wire and unloaded loop for a distance up to
18 kft of mixed gauge wire. Either DE-4 U-BR1TE list
can be configured to connect to an ISDN switch,
(Adjacent-to-Switch), the customer NT1 (Adjacent-to-
Customer), another U-BR1TE (Tandem Office Mode),
or Adjacent to an ADTRAN U-RPM/U-repeater. See
Figure 2 for circuit location description. The carrier side
interface provides mapping of up to 2B+D and DSL
overhead to three DS0s of the 1.544 Mbps T1 stream.
Indicators for the loop and carrier synchronization status
arelocatedon thefaceplate. See Table A foradescription
of each indicator. Connection to the U-interface is made
to Tip/Ring of the physical shelf slot position of the
U-BR1TE.
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 Warranty and
Customer Service ).
The DE-4 U-BR1TE plugs into a single shelf slot position
of an DE-3/4/4E or DE-4E SMART channel bank and
requiresno special wiring. Connectionto theU-interface
is made to Tip/Ring (T/R) of the physical shelf slot
position when the U-BR1TE is installed. The type of the
service selected can affect the adjacent shelf slots.
When configured for 2B+D mode of operation, which is
themost typical application, three timeslotsare required.
The timeslots used are the first slot position the DE-4
U-BR1TE is installed in, and the next two adjacent shelf
slot position, which must be empty. In the 2B+D mode
of operation, the DE-4 U-BR1TE cannot be located in
J23 or J24. In 1B+D or 2B modes of operation, only one
adjacent shelf slot position is required, therefore, J24
cannot be used. In 1B and D modes of operation, only
the physical time slot of the shelf slot position is required,
and there are no restrictions.
Figure 2. Position Switch Settings at Network Locations
ISDN
Switch
Northern
D3/D4/D4E
COT
Northern
D3/D4/D4E
RT
Customer
NT1
Northern
COT
Customer
NT1
Northern
D3/D4/D4E
RT
2-wire T Carrier
2-wire
Loop
2-wire
2-wire T Carrier T Carrier
2-wire
Loop
Adjacent to Switch Adjacent to Customer
Adjacent to Switch Tandem Office (Source) Tandem Office (Sink) Adjacent to Customer
Northern
RT
Northern
D3/D4/D4E
COT
L
U
L
T
L
U
N
T
L
U
L
T
L
U
L
T
L
U
N
T
Northern
D3/D4/D4E
COT
2-wire T Carrier
Adjacent to Switch Adjacent to U-Repeater
Northern
D3/D4/D4E
RT
L
U
L
T
L
U
N
T
L
U
N
T
SW2 SW2
SW2SW2
SW2
SW2 SW2
SW2
2-wire
Loop
2-wire
U-Repeater
RPU-RPM Customer
NT1
1 OFF
2 OFF
1 OFF
2 ON
1 OFF
2 ON
1 ON
2 OFF
1 ON
2 ON
1 OFF
2 OFF
1 ON
2 ON
1 OFF
2 OFF

3Section 61410020L2-5, Issue 361410020L2-5C
When the DE-4 U-BR1TE is deployed in a channel bank
located at the same facility as the ISDN servicing switch
(Adjacent-to-Switch)or in atandem Office configuration,
the channel bank should be provisioned for external
timing. External timing from a suitable composite clock
must have Stratum One traceability. When deployed in
a remote terminal (Adjacent-to-Customer), the timing for
that channel bank may either be loop-timed (LP) or timed
from an external source. Consult local provisioning
documents for timing options.
3. CONFIGURATION
There are several switch settings on SW1 that must be
configured before installing the DE-4 U-BR1TE. Figures
1 and 3 identify the location of SW1 and its switch settings.
Table B describes the settings for determining the
appropriate switch positions. Figure 2 displays a typical
circuit position and associated switch settings.
Table A. Faceplate LED Indicators
Description
OFF during normal operation or test modes, indicates no Near-End Block Errors
(NEBE) or Far-End Block Errors (FEBE) are detected from the U-interface loop.
Flashes yellow upon receipt of a NEBE or FEBE. During Local Performance
Monitoring (see Section 4) will flash yellow when a BER > 10-6 is detected and
illuminate yellow when a BER > 10-5 is detected.
OFF during normal operation or test modes, indicates no NEBEs or FEBEs are
detected from the carrier. Flashes yellow upon receipt of a NEBE or FEBE. During
Local Performance Monitoring (see Section 4) will flash yellow when a BER > 10-6 is
detected and illuminate yellow when a BER > 10-5 is detected.
Illuminated when U-interface is out of sync or has a loss of signal. OFF indicates
loop synchronization has been established.
Illuminated when no framing pattern (TR-TSY-000397 compliant) is received.
OFF indicates carrier synchronization has been established.
Illuminated when Layer 1 is established from the ISDN switch to the customer
ISDN terminal equipment.
Solid yellow when front panel test has been successfully initiated or when
responding to a 2B+D loopback request.
Flashes yellow once every two seconds when responding to a B1 loopback
request or when forced into a B1 loopback from the front panel.
Flashes yellow twice every two seconds when responding to a B2 loopback
request or when forced in to a B2 loopback from the front panel.
Solid Green when in Local Preformance Monitoring or when the local test pattern
gen/det is invoked.
Flashes red when errors are seen by local test pattern detector.
Color
Yellow
Yellow
Red
Red
Green
Yellow
Green
Red
Indicator
Loop (LP)
Carrier (CR)
Loop Sync (LP)
Carrier Sync (CR)
Activation (ACT)
Test (TST)
Error (ERR)
SW2
SW6 (0nly on the L4)
1
O
N
2
LUNT (COT) TANDEM
LULT (RT) ADJ
OPEN
9706
PSB02
J
O
N
1234
1 O
N
2
SW5
1
B1 B2
2
O
N
ZBS
OFF
SW1
B1 B2 D
ZBS
EN
ZBS DIS
12
O
N
34
NORM POWER
Figure 3. SW1, SW2, and SW6 Labeling

4 Section 61410020L2-5, Issue 3 61410020L2-5C
Table B. SW1, SW2, and SW6 Option Settings
LABEL
B1
B2
D
ZBS DIS
ZBS EN
LULT(RT)
LUNT(COT)
ADJ
TANDEM
ADJ
TANDEM
NORM
POWER
SWITCH
SW1-1
SW1-2
SW1-3
SW 1-4
On
Off
SW 2-1
On
Off
SW 2-2
On
Off
On
Off
SW6*
DESCRIPTION
Selects the service level. The DE-4 U-BR1TE II may be
optioned to deliver full ISDN (2B+D) or any other level of
service.
SW1-1 SW1-2 SW1-3
Service Option B1 B2 D
2B+D ............................. On ........... On ............. On
2B ................................. On ........... On ............. Off
B1+D ............................. On ........... Off ............. On
B2+D ............................. Off ........... On ............. On
B1 ................................. On ........... Off ............. Off
B2 ................................. Off ........... On ............. Off
D ................................... Off ........... Off ............. On
The ZBS option must be set the same for the COT and RT.
SW1-4 should be set toward “ZBS EN”for AMI-provisioned
carriers. The switch setting is optional for B8ZS-provisioned
carriers. Consult local provisioning guidelines.
This switch should be set toward “LULT”when the unit is
installed as Adjacent-to U-Repeater, Adjacent-to-Customer,
or Tandem Office Source configuration. This switch should
be set toward “LUNT”for Adjacent-to-Switch and Tandem
Office Sink configurations.
In the LULT(RT) mode, SW2-2 controls sealing current.
Whenused in an Adjacent-to-Customer configuration, sealing
current should be provided (SW2-2 On ). In a Tandem Office
Source,sealingcurrent is not required,and should be disabled
(SW2-2 Off ).
In the LUNT(COT) mode, SW2-2 controls periodic wake-up
tone. Periodic wake-up tones should be disabled when
locatedin an Adjacent-to-Switch location(SW2-2 On ). Periodic
wake-up tones are required (SW2-2 Off ) when located in a
Tandem Office Sink configuration, or when adjacent to a
devicerequiring wake-up tones, such as aNewbridge®switch.
No powering provided toward the customer U-interface.
Automatically determines which of the following modes of
operation is appropriate:
•Supply a constant 43 mA to power an ADTRAN ISDN
U-Repeater II or U-Repeater III.
Note: Power option should only be used in the LULT
(RT) configuration
FUNCTION
Service Level Selection
Zero Byte Substitution
Disables ZBS
Enables ZBS
Termination Mode
LULT mode (RT typical)
LUNT mode (COT typical)
LULT Mode (SW2-1
On )
DC sealing current provided
DC sealing current not provided
LUNT Mode (SW2-1 Off )
Periodic wake-up tone not provided
Periodic wake-up tone provided
Normal
Powering provided toward the
customer U-interface.
Function dependent upon SW2-1 setting in non-powering configuration.
Function is not applicable in powering configuration (SW6 to Power).
* Applies to the DE-4 U-BR1TE II w/PWR, L4
CAUTION: Do not use the power option (SW6 –POWER) unless this product is connected to an ISDN repeater, or
IDSL OCU-R that is not locally powered.

5Section 61410020L2-5, Issue 361410020L2-5C
Faceplate indicators display the various conditions
occurring with respect to the DE-4 U-BR1TE. Table A
lists the faceplate indicators and their error messages.
The ten position rotary Address Select Knob (SW1)
determines which downstream network element is to be
looped. See Figure 1 for switch location and Table C for
setting descriptions.
Selecting the B1/B2 DIP switch (SW5-1) sets the bearer
channel. The NORM/PTRN switch (SW5-2) selects
between normal and internal 2047 pattern generator
local test. The Test pushbutton (SW4) activates and
deactivates the test. See Figures 1 and 4 for switch
locations.
The following describes local test access testing for local
or remote loopbacks.
1. Connect the DS0 tester configured for Near Logic to
the Rx/Tx Bantam jack, and the clock cord to the
Timing Supply unit.
2. Using the ten position rotary Address Select Knob
(SW-3),selectthedesired addressofthedownstream
unittobetested. See Table C for addressinformation.
3. Select the appropriate bearer channel using the B1/
B2 DIP switch (SW5-1).
4. To activate the loopback test, press the TEST
pushbutton (SW4).
5. Upon completion of the test, select another address
using the ten position rotary switch, or another
B
channel (SW5-1).
DISPLAY
AD1
AD2
AD3
AD4
AD5
AD6
LPBK
CRTX
LPTX
NT1
INTERPRETATION
Address #1, address of this unit
Address #2, the next downstream unit away
Address #3, the second unit downstream
Address #4, the third unit downstream
Address #5, the fourth unit downstream
Address #6, the fifth unit downstream
Loopback, forces this unit to loopback either
B1/B2 from the front panel. Loopbacks occur
in both the customer and network directions.
Carrier transmit, in the carrier direction
Loop transmit, in the loop direction
NT1, address of the NT1
Table C. Rotary Switch Options
4. TESTING
The DE-4 U-BR1TE responds to the B1, B2 and 2B+D
loopbacks as specified in TR-NWT-000397. This allows
an upstream network element, such as the ISDN switch,
U-BR1TE, or U-interface testers to initiate industry
standard
EOC loopbacks. The faceplate can aid in
circuit turn-up and, in case of equipment malfunction,
sectionalize the network fault. For local test access, a
DS0 logic tester (equivalent to a TPI 108/109) can be
used along with the ten position Address Select Knob,
TEST pushbutton, and B1/B2 switches to perform local
and downstream loopbacks. See Figures 1 and 4 for
location identification. In addition, non-intrusive local
performancemonitoring information is available through
the faceplate LEDs. The faceplate LEDs provide the U-
BR1TE operational and test status indications.
Loopbacks in the network-to-customer direction can be
initiated from the faceplate of the DE-4 U-BR1TE.
Faceplate initiated loopbacks are unobtrusive to unused
channels. Loopback on a single B channel will not
interrupt the other channels. The 2B+D loopback is
service affecting for the customer.
Figure 4. U-BR1TE II Faceplate
UBR1TE II
1410020L2
LPBK CRTX
LPTXAD6
NT1
AD
5
AD1
AD2AD3
AD4
TEST
B1
NORM
ACT
LP
PTRN
B2
12
CR
TST ERR
Rx
Tx
DS-0
LOGIC
C

6 Section 61410020L2-5, Issue 3 61410020L2-5C
6. Upon completion of all testing, press the TEST
pushbutton (SW4) and remove the DS0 tester from
the Bantam jack.
Local performance monitoring provides a non-intrusive
method for local craftspersons to observe an
accumulative Bit Error Rate (BER). Local performance
information is available simultaneously for both the loop
and carrier side. The BER is calculated every minute
and will display the average BER for the previous six
minutes using the LP and CR LEDs. See Table B for
associated LED indications. The following describes the
test configuration for local performance monitoring.
DO NOT use a DS0 Logic tester.
1. Select AD1 on the ten position rotary Address Select
Knob (SW3).
2. Press the TEST pushbutton (SW4).
3. Observe the LP and CR LEDs for BER information.
LEDs will normally be off with no errors present. LEDs
will flash yellow when a BER > 10-6 is detected and
illuminate yellow when a BER > 10-5 is detected.
5. Upon completion of monitoring, press the TEST
pushbutton (SW4).
5. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within ten (10)
years from the date of shipment if this product does not
meetits published specificationsor if it fails whilein service.
For detailed warranty, repair, and return information, refer
to the ADTRAN U.S. and Canada Carrier Networks
Equipment Warranty, document 60000087-10.
Return material Authorization (RMA) is required prior to
returning equipment to ADTRAN. ADTRAN does not
recommend that repairs be performed in the field.
For Service, RMA requests, or further information, contact
one of the following numbers:
ADTRAN Customer Service:
ADTRAN Technical Support (Post-Sales)
(Have unit serial number available) [phone]
Standard Support hours: Monday-Friday
7am-7 pm CST
Emergency Support: 7 days/week, 24 hours/day
Sales [phone]
RMA (Repair Service) [phone]
Repair and Return Address:
ADTRAN, Inc.
Customer Service Department
901 Explorer Boulevard
Huntsville, Alabama 35806-2807

7Section 61410020L2-5, Issue 361410020L2-5C
Input/Output Signal
Line: 2-wire (tip/ring)
Operating Mode: Full Duplex
Data rate: 160 kbps; 144 Kbps available to customer
Signal Format: 2B1Q
Faceplate Indicators
LP (Loop Sync) Red U-interface is out of sync
LP (Loop CRC) Yellow Loop side NEBE or FEBE
CR (Carrier Sync) Red No Framing pattern being received
CR (CarrierCRC) Yellow Carrier side NEBE or FEBE
ACT (Active) Green Layer 1 established
TST (Remote Loopback) Yellow Downstream has responded to loopback request
Green Responding to a loopback request from an upstream unit
Power
L2 L4*
Voltage: -48 V 5 V -48V 5V
Current: 30 mA 60 mA 118mA 65mA
On card dissipation: 2 W maximum 4 W maximum
Sealing Current
Constant: 6-8 mA constant
Repeater Powering Current*
Constant: 43mA constant
Dimensions
Height: 6.2 in.
Width: 10.0 in.
Depth: 1.15 in.
Weight: 16.0 oz.
Mounting: Mounts in a Northern Telecom DE-3, DE-4, DE-4E, and DE-4E Smart channel banks
Operating Environment
Temperature: 0˚- 55˚C (32˚- 131˚F)
Humidity: To 95%, non-condensation
*Applies to the DE-4 U-BR1TE II w/PWR, L4
Table D. Specifications