Motorola G24 Manuale Utente

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Call Control
3-44
 AT Commands Reference Manual
December  31, 2007
The meaning of the AT+MVC=1,1,3,5 command is: 
The modem is able to support GSM full rate speech version 1, GSM full rate speech version 2 
(EFR), GSM half rate speech version 3 (AMR Half Rate) only
GSM full rate speech version 1 is the first priority
GSM full rate speech version 2 (EFR) is the second priority
GSM half rate speech version 3 (AMR Half Rate) is the third priority
The GSM half rate speech version 1 and GSM full rate speech version 3 (AMR Full Rate) will not 
be supported by the modem.
+MTTY, Motorola TTY Configuration
This AT command is used to enable or disable TTY (Tele Typewriter) support in G24 modules.
Note:
Tele-typewriter or Teletype, a typewriter with an electronic communication. TTY is an 
electronic device for text communication via a telephone line, used when one or more of 
the parties have hearing or speech difficulties.
Command 
Type
Syntax
Response/Action
Remarks
Set
AT+MTTY=<n>
OK
or:
+CME ERROR: <err>
The SET command is used for setting 
the current TTY mode.
Read
AT+MTTY?
+ MTTY :  <n>
OK
or:
+CME ERROR: <err>
The READ command returns the 
current TTY  mode <n>.
Test
AT+MTTY=?
+MTTY :  (0-3)
OK
or:
+CME ERROR: <err>
The Test command returns the possible 
value’s range.