HP 3000/9x9KS Series, Service Manual

Page: 34 / 352

2-14 Install and Configuration
Internal Modem Configuration
The internal modem is configured with the on-line diagnostic utility modutil. Modutil can only be run from
the Diagnostic Users Interface (DUI). Modutil provides three functions:
1. Modem Terminal Interface
2. Modem Diagnostics
3. Modem Configuration Information
Note that the internal modem is not present in HP VISUALIZE workstation models.
Modem
T
erminal Interface provides the terminal interface between the modem and the user. It takes AT
commands from the keyboard and sends them to the modem. Refer to Table 2-4 for the list and description
of the HP AT commands. It also receives data from the modem and displays it on the terminal.
The Modem Diagnostics provide the following diagnostics:
• Port Configuration Diags - Communicate with the modem by auto-selected combinations of port
configurations (baud rates, character bits, etc.)
• Modem Selftest I - Performs the modem automatic selftest.
• Modem Selftest II - Performs the modem local analog loopback test.
• Modem Selftest III - Performs the modem local digital loopback test.
• Modem Selftest IV - Performs the modem remote digital loopback test.
• Combined Modem Selftest - Performs modem selftests I, II and III.
The Modem Configuration Information mode gives displays of the operating parameters, configuration
parameters, and S register values.
To configure the internal modem perform the following steps:
1. At the system prompt enter the sysdiag command. The DUI prompt should appear.
2. At the DUI prompt enter modutil command.
3. At the modutil prompt (MU>) enter terminal to go into the terminal command mode. The following
terminal start message should be displayed:
The modem is on port 7 of the Core I/O board
Baud rate is 19200 bps, character size is 8 bits
Do you want to make any changes? Yes/No __
Baud rate (19200 bps) refers to the serial baud rate, not the modem bps on-line rate. If Y (yes) is entered
you can change the baud rate and character size. The program then repeats the terminal mode start message
with the new setup parameters.
If N (no) is entered, to accept the displayed parameters, the program displays the following message:
You can now enter modem commands or use Ctrl+X to return to the MU prompt
Note
ONLINE diagnostics need to be loaded prior to performing the following steps and configuring the
internal modem.