Troubleshooting

Situation C: The modem always returns «No carrier» when trying to issue a communication

Solutions for “no carrier” message

If the

Then ask …

Action

modem

 

 

returns …

 

 

no carrier

Is the selected

Type AT+CEER to view the

(esp. for

bearer type

extended error code (see

data

supported by

“Interpretation of Extended

communi-

the called

Error Codes” table, page 52).

cation)

party?

Be sure that the selected

 

 

bearer type is supported by

 

 

the called party.

 

Is the selected

Be sure that the selected

 

bearer type is supported by

 

bearer type

the network.

 

supported by

 

 

the network?

If no success, try bearer

 

 

selection type:

 

 

AT+CBST=0,0,3

 

 

Be sure SIM card is available

 

 

for data/fax calls.

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Multi-Tech Systems MTCBA-G-F2 manual Solutions for no carrier message

MTCBA-G-F, MTCBA-G-F2 specifications

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