Lexmark CX310 Service Manual page 153

Actions
Step 1
Is the phone line properly connected to the modem card and the wall jack?
Step 2
Properly connect the phone line to the modem card and wall jack.
Did this fix the problem?
Step 3
Test the phone line's ability to send and receive calls.
Did the phone line work properly?
Step 4
Use the MFP on a properly functioning phone jack.
Did this fix the problem?
Step 5
Is the phone line being used by the MFP an analog line?
Step 6
Is the line being used a VOIP line?
Step 7
Have the system administrator verify that the VOIP server is configured
to receive faxes.
Is the server properly configured?
Step 8
Is the MFP on a PABX?
Step 9
Enable Behind a PABX under fax settings in the Administration menu.
Did this fix the issue?
Step 10
Is a dial prefix needed to get an outside line?
Step 11
Try sending a fax using a dial prefix.
Did the fax transmit?
Step 12
Is the fax failing to send to one specific destination?
Yes
Go to step 2.
Problem resolved
Go to step 5.
Problem resolved.
Go to step 8.
Go to step 7.
Go to step 8.
Go to step 9.
Problem fixed.
Go to step 11.
Problem fixed.
Go to step 13.
Diagnostic information
153
7527
No
Go to step 3.
Go to step 3.
Go to step 4.
Go to step 5.
Go to step 6.
Go to step 8.
Stop here. The issue is
VOIP related. The VOIP
provider needs to
change the server
configuration.
Go to step 10.
Disable Behind a
PABX, and go to step
10.
Go to step 12.
Go to step 12.
Go to step 14.