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Chapter 5 - AT Commands, S-Registers, and Error Codes
MTSGSM
45
S31 Configuration bitmap
Description S31 is a bitmapped register and controls a wide range of modem properties.
Bit Default Meaning
0 N.A. Not used
1 N.A. Not used
2, 3 2 Error correction progress messages control.
A value of 0 means that only DTE speed is shown and corresponds to
ATW0 (default).
A value of 1 means full reporting and corresponds to ATW1
A value of 2 means that only DCE speed is shown and corresponds to ATW2
4 N.A. Not used
5 N.A. Not used
6 N.A. Not used
7 N.A. Not used
S95 Negotiation message options
Description: S95 is a bitmapped register and enables variants of the CONNECT result code from
the modem. The settings in this S-register override the ATW command.
Bit Default Meaning
0 1 Link speed reporting.
1 1 ARQ reporting.
2 1 CARRIER reporting.
3 1 PROTOCOL reporting.
4 N.A. Not used
5 1 COMPRESSION reporting.
6 1 Enable all result codes. Just like ATX4 .
7 N.A. Not used
Error Codes
+CME ERROR Mobile equipment error
Description: This is the error code for +CME ERROR:
Error code Meaning
0 Phone failure
1 No connection to phone
2 Phone adaptor link reserved
3 Operation not allowed
4 Operation not supported
5 PH-SIM PIN required
10 SIM not inserted
11 SIM PIN required
12 SIM PUK required
13 SIM failure
14 SIM busy
15 SIM wrong
16 Incorrect password
20 Memory full
21 Invalid index
22 Not found