Motorola 326X V.34 User Manual page 114

326X Series Modem Troubleshooting Guide (Continued)
Problem Diagnosis/Test
Check the modem's line setting
(AT&L).
Check that the TR LED on
modem's front panel is steady
on.
Check that the RI/OH LED is on
when ring is present on the line.
Check that the communications
package's data rate is set to a
rate that the modem's autobaud
feature supports.
Modem won't dial Ensure dial tone is present.
If using DTR dial, check:
Check that the communications
package's data rate is set to a
rate that the modem's autobaud
feature supports.
Unable to establish a Check the disconnect code from
connection the front panel or AT response.
Check the modulation
configuration:
Check EC/DC Mode (AT
option.
Software package dis- Ensure DCD=Normal (AT&C1). If DCD is not set to Normal, issue AT&C1 from the DTE
plays on-line connection
status before calling or
answering is performed
A call is established but Read the disconnect code.
not maintained
6-4 Troubleshooting Guide
• Default dial option
(AT * DA)
• Phone number at stored
location (presence of one)
• DTR option (AT&D)
*
• Mod (AT MM)
*
• Max Rate (AT MX)
• Min Rate (AT * MN)
*
SM)
Possible Solution
Ensure Line=Dial (AT&L0).
If the TR LED is not steady on, ensure the DTE is supply-
ing DTR.
Check that the phone number you are calling is correct.
Check phone line and ensure it is properly connected to
the modem's rear panel.
Ensure default dial option is set to a location with a valid
phone number.
Ensure that DTR=108.1 (AT&D5) or Tail (AT&D4).
Ensure the DTE is supplying DTR.
Based on the disconnect reason, take the appropriate
action.
Ensure that Mod=C.Fast Auto or V32bis Auto.
Ensure Mode=AutoRel (AT
remote modems.
or set DCD=Normal from the front panel.
Based on the disconnect reason, take the appropriate
action.
*
SM3) on both the local and