700-701-100-02

System Configuration

 

 

SYSTEM CONFIGURATION

Each line unit provides a system-wide view of the entire HDSL circuit, including the remote unit. After establishing communication with the remote line card, provisioning information can be set 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 line unit. The LTU overwrites any NTU settings when the link is re-established. The LTU also provides a special lockout feature that prevents users plugged into the NTU console port from changing the circuit configuration. When 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 card is under the control of a shelf management unit.

The line unit option settings are stored in non-volatile RAM (NVRAM). No dip switches or jumpers are required to configure these options. These options are set from the console screen menus or management unit interface. Option settings stored in NVRAM are retained if the line unit loses shelf power.

MAINTENANCE TERMINAL CONNECTION

The maintenance terminal (or PC running a terminal emulation program) is used to access the console screen menus. Through these menus, the system is configured, monitored, tested, and its circuit inventory is displayed.

Maintenance terminal

 

 

 

 

 

 

 

 

 

 

 

 

 

DB-9 Connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DTE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

UTU/ETU

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

Console port

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

 

 

DB-9 Connector

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DCE)

 

 

 

 

 

 

 

 

 

 

 

5

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

 

 

DTR (Data Terminal Ready)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

 

 

 

TD (Transmit Data)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Maintenance terminal

 

2

 

 

 

RD (Receive Data)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

DB-25 Connector

 

5

 

 

 

 

GND

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(DTE)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

3

2

7

Figure 10. UTU/ETU Console Port and Maintenance Terminal Connector Pinouts

UTU-701 and ETU-751 List 1

August 9, 2002

25