61182118L1-5B
Issue 2, July 2004
3
2. Pull the ejector latch, located on the lower left-
hand side of the 2W/4W SHDSL LTU front panel,
from its closed position.
3. Hold the 2W/4W SHDSL LTU by the front panel
while supporting the bottom edge of the module
with the ejector latch opened to engage the chassis
edge.
4. Align the module edges to fit in the lower and
upper guide grooves for the access module slot.
5. Slide the module into the access module slot.
Simultaneous thumb pressure at the top (above the
PWR LED) and at the bottom (below the
electrostatic caution symbol) of the module will
ensure that the module is firmly seated against the
backplane of the chassis.
6. Secure the 2W/4W SHDSL LTU in place by
pushing in on the ejector latch.
When the 2W/4W SHDSL LTU first powers up it runs
the power up self-tests. Once the power up self-test is
complete, the status LEDs will reflect the true state of
the hardware.
Front Panel LEDs
The 2W/4W SHDSL LTU Access Module provides
front panel LEDs to display status information. See
Table 2
for a listing of the front panel LEDs and their
indications.
4. PROVISIONING
All SHDSL LTU menus are accessed via the SCU. The
Total Access 3000 SCU provides a front panel DB-9
connector that supplies an RS-232 interface for
connection to a controlling terminal. The pinout of the
DB-9 is illustrated in
Figure 2
.
Figure 2. RS-232 (DB-9) Pin Assignments
The terminal interface can operate at data rates of 9.6,
19.2, 38.4, 57.6, and 115.2 kbps. The asynchronous data
format is fixed at 8 data bits, no parity, and 1 stop bit.
The supported terminal type is VT100 or compatible.
6
7
8
9
1
2
3
4
5
TXD (Transmit Data)
RXD (Receive Data)
SGN (Signal Ground)
Table 2. Front Panel LEDs
Front Panel
LED
Indication
Description
PWR
Off
Green
Yellow
Flashing (any color)
No power, or fuse failure
Self-test passed and the module is In-Service
Self-test passed and the module is Out-of-Service
VT100 menu session in progress
SHDSL
Off
Green
Red
Module is Out-of-Service, Unassigned
Module has achieved synchronization with the NTU
Module has not achieved synchronization with NTU
G.703
Off
Green
G.703 port not configured (Out-of-Service, Unassigned),
or an alarm condition exists
G.703 port configured and no alarms exist
TST
Off
Green
Blinking Green
Red
Module is not in loopback or BERT
Local loopback is active, or BERT running with no errors
Module is running a BERT with bit errors
Module is running a BERT with no pattern sync
ALM
Off
Yellow
Red
No alarm condition detected
Remote alarm condition detected
Alarm condition detected locally
PWR
TEST
SHDSL
ALM
SHDSL
1182118L1
G.703
