Page 464 of 536
Chapter 25 — Fault locating and clearing
553-3121-210
Standard 3.0
January 1999
Accessing the system
When replacing equipment, you send maintenance commands to the system
software to disable faulty equipment and to software enable and test newly
installed equipment.
You send maintenance commands to the system through the system terminal
or the maintenance telephone. This section gives the procedures for accessing
the system through these devices.
Access through the system terminal
You can send maintenance commands and receive system messages by
accessing the CPU through an RS-232 device, such as a video display
terminal (VDT) or teletypewriter (TTY).
When you access the system through a system terminal, a login procedure is
required. All system passwords are initially set as 0000, but you can change
passwords through the Configuration Record (LD 17).
If a sysload (SYSLOAD) occurs before you save a new password in a data
dump, the last active password remains valid.
Each system has two levels of passwords: level 1 is for general use, level 2 is
for administrative use. Either password is accepted in the login procedure.
describes how to access the system from a terminal.
Содержание Meridian Meridian 1
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Страница 17: ...xiv Contents 553 3121 210 Standard 3 0 January 1999 ...
Страница 89: ...Page 70 of 536 Chapter 6 Bracing cabinets against earthquakes 553 3121 210 Standard 3 0 January 1999 ...
Страница 97: ...Page 78 of 536 Chapter 8 Installing a new system 553 3121 210 Standard 3 0 January 1999 ...
Страница 107: ...Page 88 of 536 Chapter 10 Installing the system ground 553 3121 210 Standard 3 0 January 1999 ...
Страница 113: ...Page 94 of 536 Chapter 11 Installing the power supply 553 3121 210 Standard 3 0 January 1999 ...
Страница 125: ...Page 106 of 536 Chapter 12 Adding an expansion cabinet 553 3121 210 Standard 3 0 January 1999 ...
Страница 139: ...Page 120 of 536 Chapter 13 Installing the circuit cards 553 3121 210 Standard 3 0 January 1999 ...
Страница 157: ...Page 138 of 536 Chapter 15 Installing and connecting SDI and Ethernet ports 553 3121 210 Standard 3 0 January 1999 ...
Страница 175: ...Page 156 of 536 Chapter 16 Starting up and testing the system 553 3121 210 Standard 3 0 January 1999 ...
Страница 209: ...Page 190 of 536 Chapter 18 Connecting the trunks 553 3121 210 Standard 3 0 January 1999 ...
Страница 323: ...Page 304 of 536 Chapter 21 Installing Hospitality 553 3121 210 Standard 3 0 January 1999 ...
Страница 419: ...Page 400 of 536 Chapter 23 Pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 455: ...Page 436 of 536 Chapter 24 Changing pre programmed data 553 3121 210 Standard 3 0 January 1999 ...
Страница 555: ...Page 536 of 536 Chapter 25 Fault locating and clearing 553 3121 210 Standard 3 0 January 1999 ...