Modem Answer Action
The modem is busy Go to Step 007.
The modem does not answer Go to Step 012.
The modem answer Go to Step 017 on page 4-10.
007
– Disconnect the modem’s telecommunication cable from the public switched
network plug.
Is the modem’s telephone number still busy?
Yes No
008
– Reconnect the modem to the public switched network.
– Switch the modem power off, then power on.
– From a close telephone, call the modem.
Is the modem’s telephone number still busy?
Yes No
009
The problem is solved. Ask the remote operator to re-start his call from
the remote NAS.
010
The modem is defective. Exchange it (see “Modem Exchange Procedure” on
page 4-14).
011
The probable cause of the problem is the telephone line.
012
– Switch the modem power off, then power on.
– From a close telephone, call the modem.
Does the modem answer?
Yes No
013
– Disconnect the modem’s telecommunication cable from the public
switched network plug.
– Connect a telephone in place of the modem to the public switched
network.
– From a close telephone, call the modem.
MAP 0410 (continued)
Chapter 4. Nways Switch Administration Station Problem Determination 4-9
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