Multi-Tech Systems MTCBA-G-F2 - Manual (Page 42)

Troubleshooting
42
Situation B: The modem always returns
«Error» when trying to issue a
communication
If the Wireless MultiModem returns a message of error upon
an attempted transmission of data or voice signals, see the
table below for possible causes and solutions.
Solutions for “error” message situations
If the modem
returns … Then ask … Action
error Is the modem
registered on the
network? Follow “Verifying
network registration”
procedure to be
sure modem is
registered on
network.
Is the modem
receiving an
incoming call or is
it already in
communication? End any
communication
using the
ATH
command.
Does AT+CREG?
return 0,1 (registered)
or 0,5 (registered
roaming)? If not, check for
adequate signal
strength on network.
Use AT+CSQ.