COM AT+CEER: Extended error report 
COM
COM Used variables:
COM <DA4> Destination address of own conventional phone
COM
COM Version History:
COM Version 1.0   24.11.2003   R. Weiden	started, with adaption for model C62
COM Version 1.1   09.12.2003   R. Weiden        adapted to R65 platform, several improvements
COM -------------------------------------------------------------------------------------------------------------

COM ToDo(S3): Implement more tests for disconnection reasons

from attglobals import *

COM Extended error report
AT+CEER=?
WAIT FOR OK
COM Dial own phone and hang up immediatly
ATD <DA4>;
WAIT FOR OK
WAIT 500
ATH
WAIT FOR OK
COM Get extended error message
AT+CEER
WAIT FOR +CEER:
ATH
WAIT FOR OK
COM write nonsense
AT+CEER=1
WAIT FOR ERROR

