13 CM-TB8G Mobile Telephone Expansion Card
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GSM Settings Page
Fig 13-2: GSM Settings Page
The top section of the page shows information for Number, Operator, Signal
Strength and Status for each channel, and various controls for operating the
GSM telephone channel.
Number:
The mobile telephone number of the channel can be entered here
for reference purposes only, it does not change the actual number assigned
to the SIM card. The mobile number given by the operator is not stored on
the SIM card, it is resolved at network level when required. Therefore, it is
not possible to show the number automatically.
Operator:
This shows the network operators name that the channel is
registered to. If the channel registration failed, “Not Registered” will be
shown. An error code may also be shown to indicate why the channel
could not access the network. If an error code is not shown, registration
failure could be due to the quality of the network signal strength. Check the
antenna connection and position. A list of common error codes is shown
below:
Error code 18: The SIM card for this channel is absent or is not working.
Error code 19: The SIM is locked with a Personal Identification Number
(PIN). Please see SIM Card Requirements.
Error Code 20: The SIM is locked and requires a Pin Unlock Key (PUK).
Please see SIM Card Requirements.
Error Code 21: The SIM card has a fault.
Error Code 25: The SIM is locked with a Personal Identification Number
(PIN2). Please see SIM Card Requirements.
Error Code 26: The SIM is locked and requires a Pin Unlock Key (PUK2).
Please see SIM Card Requirements.
Signal Strength:
This shows the quality of the signal from the registered
network. Adjusting the position of the antenna can significantly affect the
signal strength.
Status:
This shows the current status of the telephone channel. When
receiving an incoming call, the callers’ number will be shown here if
available.
Call Control:
The controls shown will depend on the current status of the
telephone channel. When the channel is idle, the dial controls are shown.
When an incoming call is ringing, controls to either answer or ignore the call
are shown. When a call is connected, the end call control is shown.
