Integra M2106+
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WA_DE_PTS_003-001
April, 2007
7.2
Receiving 'no carrier'
Messages
If the Wireless CPU
®
returns a '
no carrier
' message on an attempted transmission of data or voice signals,
refer to the next table for possible causes and solutions.
Table 6: Solutions for no carrier message
If the Wireless CPU
®
returns
Then ask
Corrective Action
Is the received signal strong
enough?
Refer to section 6.5.3.2 to check the
strength of the received signal.
No carrier
Is the antenna in accordance
with requirements and correctly
connected?
Refer to Table 4 for antenna
requirements and antenna connection
check.
No carrier
(when trying to issue a
voice communication)
Is the semicolon (;) entered
immediately after the phone
number in the ATD command?
Make a new attempt with the
semicolon at the end of the AT
command:
e.g. ATD 1234;
Is the SIM card configured for
data/fax calls?
Contact your network provider for
activation of Data Fax services.
No carrier
(when trying to issue a
data or fax
communication)
Is the selected bearer type
supported by the called party
and by the network?
Check bearer type with the called
party and the network provider.
Try bearer selection by AT command:
AT+CBST=0,0,3
If the Integra Wireless CPU
®
returns a
'no carrier'
message, and there is no solution in Table 6, investigate
the
extended error code
by using the
AT+CEER
command. Refer to the following table for interpretation of
the
extended error code
.
