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Menu Navigation
To traverse through the menus, select the desired entry
and press ENTER. To work backward in the menu,
press the ESC (escape) key.
The menu tree in Figure 3 illustrates the path to every
provisioning, performance, and test access point in the
U-BR1TE menu system.
3. TESTING
The U-BR1TE responds to embedded operation
channel loopbacks, including B1, B2, and 2B+D, when
configured for D channel operation. When used in
non-D channel modes of operation (B1, B2, or 2B),
the Adjacent-to-Customer U-BR1TE will respond to an
in-band OCU or CSU Latching loopback sequence for
each B-Channel. When remote testing is not available,
or during isolation of trouble or equipment malfunction,
the U-BR1TE front panel provides local capabilities.
Using the internal 2047 pseudorandom test pattern
1. Configuration
2. Provisioning
3. Status
4. Test
61180020L1-5B
Unit Name
CLEI Code
Part Number
Software Revision
1. Mode
2. Service
3. Zero Byte Substitution
4. Tandem Office Install?
Act Bit Exchanged
Loop in Synch
Carrier in Synch
Rx Loop CRC Error
Rx Carrier CRC Error
Test Status
1. B1 Channel
2. B2 Channel
Figure 3. ADTRAN U-BR1TE Menu Tree
61180020L1-5, Issue 2
generator or the bantam jacks allows skilled personnel
to test in both the downstream and upstream directions
via the local craft interface, including downstream
loopbacks for intermediate ISDN devices and the
customer's NT1. In a Total Access 750 channel bank,
the U-BR1TE can address up to four downstream
intermediate elements. In a Total Access 1500 channel
bank, the U-BR1TE can address up to six downstream
intermediate elements. The front panel bantam jacks
accommodate standard DS0 Logic Testers such as the
TP1 108/109 RT II or FIREBERD 4000/6000 which
perform both the upstream and downstream testing.
Loopback Tests (ADR1 - ADR6, NT1)
Loopbacks in the Network-to-Customer direction can
be initiated from either the ISDN switch or the front
panel via the local craft interface. If a DS0 digital test
set is jacked into the bantam connector on the front
panel, data from the test set provides the 64 kbs test
pattern to be tested in B1 or B2. If no test set is
1. LULT
2. LUNT
1. Disable
2. Enable
1. No
2. Yes
1. No Test
2. ADR 1 (Local Lpbk)
3. ADR 2
4. ADR 3
5. ADR 4
6. ADR 5
7. ADR 6
8. NT 1
9. TX into Carrier
10. TX into Loop
11. Bilateral Lpbk
12. FN EOC Loopback
1. 2B + D
2. B2 + D
3. B1 + D
4. D
5. B1 + B2
6. B2
7. B1
7
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