IBM 3745 Series, Руководство по установке и обслуживанию

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This operational message shows that the modem is set in AT command
mode for switched line operation with error control enabled and will
auto-answer an incoming call.
In the next steps, you are instructed to manipulate the front panel buttons
of the modem. Unless the step suggests otherwise, do not press them in
for longer than one second.
The next Step reset the modem options to the factory default
configuration 0. Jump ahead to step 7 if the modem has never been
used.
Step 6. ____Set the modem power switch to off, then hold the
↑
key pressed and
set the power switch to on. When the message SELFTEST RUNNING is
shown, release the
↑
key.
After about 15 seconds the message is changed to:
AT CMD ec aa
td_ rd_ dsr_ II_
Figure 1-21. 7858 Operator Panel Display
If this sequence does not occur, the modem is defective and should be
replaced.
Step 7. ____ The next steps can only be done if you have attached the modem
to the public switched network. Go to Step 11 if you do not want to test
the modem's public switched network interface.
Step 8. ____ On the modem operator panel:
a. Press the
↑
until the "DTR (C108)" message is displayed on the top
row.
b. Press the
→
key until the "Forced On" message is displayed on the
bottom row.
c. Press the ENTER key twice to select the option and to return to the
modem operational mode message.
Step 9. ____ Dial the modem phone number from another telephone. You should
hear the ringing tones and then the 2100 Hz answer tone from the called
modem in the handset of the dialing telephone. If you hear the answer
tone, go to Step 11. Otherwise, continue with Step 10.
Step 10. ___ If you do not hear the modem answer tone, verify that the telephone
line is operating properly. In most countries, you can do this by replacing
the modem with a handset and then attempting a second time to dial the
modem phone number from another telephone to verify that the handset
rings properly.
Connect again the modem to the public switched network and try dialing
the modem phone number again. Observe the front panel OH light. This
light turns off when the modem answers. If this attempt to call the modem
fails, the modem is defective and should be replaced.
Step 11. ____ Set the modem power switch to OFF.
Note: The following steps assume that your DTE is already installed
and operational.
Chapter 1. Installing and Setting Up Your Service Processor
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