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700-701-900-02, Revision 02
S
YSTEM
After synchronization is established, the HDSL system can be configured and
performance can be monitored from the local unit. If the HDSL link is down,
the only parameters that can be changed are those on the local unit. The LTU
also provides a special lockout feature that prevents users connected to the
NTU console port from changing the circuit configuration. When this feature
is enabled, the maintenance terminal connected to an NTU provides a
read-only view of the entire HDSL system.
The Console screen menus are not available when the HDSL
line unit is under the control of a shelf management unit.
M
AINTENANCE
A maintenance terminal is used to access the line unit Console screen menus.
Through these menus, the HDSL system is configured, monitored, tested, and
its circuit inventory is displayed.
To connect a maintenance terminal:
1
Connect a standard serial cable from the maintenance terminal COM port
to the line unit's front panel console port. The pinouts for the console port
and maintenance terminal connectors are shown in the diagram on the
following page.
2
Configure the maintenance terminal for the following communication
settings:
•
VT100 Emulation or ANSI (if VT100 is not available)
•
clear the modem initialization string if supported by the terminal
•
Bits per second: 1200, 2400, 4800, 9600 (default), or 19200 bps
(recommended)
•
Data bits: 8
•
Parity: None
•
Stop bits: 1
•
Flow Control: None
UTU-701C and ETU-751C List 1
C
ONFIGURATION
T
ERMINAL
June 5, 2002
C
ONNECTION
System Configuration
13
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