IBM 3745 Series, Руководство по установке и обслуживанию

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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:
¹
Press the
↑
key until the "C108 (DTR)" message is displayed on the
top row.
¹
Press the
→
key until the "Forced On" message is displayed on the
bottom row.
¹
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. Replace it.
Step 11. ___ Set the modem power switch to off.
Note: The following steps assume that your DTE is already installed and
operational.
Step 12. ___ Connect the 25-pin V.24 cable from the DTE to the 25-pin connector
on the modem rear panel. Fasten the connector retaining screws.
Step 13. ___ Set the modem power switch to on. Wait until the modem
operational message is displayed on the operator panel (about 30
seconds).
Step 14. ___ Now the modem is ready for operation; you can try it with your
system. If you observe a basic system problem, such as the DTE not
being able to send commands to the modem successfully, verify again
that your individual modem configuration parameters are matching your
system requirements. If you have a problem while using the modem, see
IBM 7857 Guide to Operation, GA13-1839, chapter "Problem
Determination".
If the 7857 operator panel does not show the following message (see Figure 1-26
on page 1-32), the modem needs to be configured through the operator panel, go
to “Setting the 7857 Connected to the COM1 Connector (ASYN)” on page 1-32.
Chapter 1. Installing and Setting Up Your Service Processor
1-31