Advertisement
•
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.
•
DS0 logic level transmit and receive data access
through 91441 test adapter access jacks.
•
Faceplate LEDs indicate operational and test
status.
•
Responds to OCU and CSU loopbacks in Leased
modes.
Additional features to the L4 include:
•
Provides repeater power of 43 mA at -28 to -120
VDC.
Each list of the 9004 U-BR1TE II 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 9004 U-BR1TE II list
can be configured to connect to an ISDN switch
(Adjacent-to-Switch),
(Adjacent-to-Customer), another U-BR1TE (Tandem
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
2
the
customer
NT1
Siemens
9004 A/B
COT
2-wire
L
T Carrier
U
N
T
Adjacent to Switch
Adjacent to Customer
1 OFF
SW2
2 ON
SW6*
Siemens
COT
2-wire
L
T Carrier
U
N
T
Adjacent to Switch
Tandem Office (Source)
1 OFF
SW2
2 ON
SW6*
ISDN
Switch
Siemens
9004 A/B
COT
2-wire
L
T Carrier
U
N
T
Tandem Office (Source)
Adjacent to Switch
1 OFF
SW2
2 ON
SW6*
Siemens
9004 A/B
COT
2-wire
L
T Carrier
U
N
T
Tandem Office (Source)
Adjacent to Switch
1 OFF
SW2
2 ON
SW6*
*Applies to the ADTRAN 9004 U-BR1TE /w PWR, PN 1425.020L4
Figure 2. Position Switch Settings at Network Locations
Section 61425020L2-5, Issue 1
overhead to three DS0s of the 1.544 Mbps T1 stream.
Indicators for the loop and carrier synchronization status
are located on the faceplate. See Table A for a description
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 9004 U-BR1TE II plugs into a single shelf slot
position of an Siemens 9004 A/B channel bank and
requires no special wiring. Connection to the U-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
the most typical application, three timeslots are required.
The timeslots used are the first slot position the 9004
U-BR1TE II is installed in, and the next two adjacent
shelf slot position, which must be empty. In the 2B+D
mode of operation, the 9004 U-BR1TE II cannot be
located in slot 23 or 24.
operation, only one adjacent shelf slot position is required.
Siemens
9004 A/B
2-wire
RT
Loop
L
U
Customer
L
NT1
T
1 ON
SW2
2 ON
OFF
Siemens
Siemens
9004 A/B
RT
COT
L
2-wire
L
T Carrier
U
U
L
N
T
T
Tandem Office (Sink)
1 ON
1 OFF
SW2
SW2
2 OFF
2 OFF
OFF
Siemens
9004 A/B
RT
2-wire
L
U
U-RPM
RP
L
T
U-Repeater
1 ON
SW2
2 OFF
OFF
*Siemens
9004 A/B
2-wire
RT
2-wire
L
Loop
U
RP
L
T
U-Repeater
1 ON
SW2
2 OFF
ON
In 1B+D or 2B modes of
Siemens
9004 A/B
2-wire
RT
L
Loop
U
Customer
L
NT1
T
Adjacent to Customer
1 ON
SW2
2 ON
SW6*
OFF
2-wire
Loop
Customer
NT1
Customer
NT1
61425.020L2-5A
Advertisement
