Migration M1 to M20
Version 8 dated 15.03.00 209
Siemens Information and Communication Products
A
13.1.3 AT-Commands: Same functionality but changes in the parameters
13.2 System Parameter comparison (AT&V) on the M1 and M20
ACTIVE PROFILE:
AT Description Comment
ATDS Dial stored phone number in fixdialling phonebook M1:0...3, M20: 1...5
ATS0 Set number of rings before automatically answering
the call
M1: 1...5, M20: 1...255
ATS7 Set number of seconds to wait for connection comple-
tion
M1: 1...60 M20: 1...60...255
ATZn Set all current parameters to user defined profile M1:0,1 M20:0
AT&Dn Set circuit Data Terminal Ready (DTR) function
mode
M1: 0...3 M20: 0...2
AT&W Store current parameter to user defined profile M1: 0,1 M20: 0
AT&Z Store telephone number in SIM fixdialling memory
"FD" position"0"
M1: Stored in Registers M20: "FD" phone-
book, position 1
AT+CEER Extended error report M20: more Parameters
AT+CPBS Select phonebook memory storage M20: also DC, dialed numbers list
AT+CPWD Change password M20: more facilities to lock
AT+CRLP Select Radio Link Protocol parameter for orig. non-
transparent data call
M20: also <verx>, <T4>
M1 Description M20
B99 GSM speed follows Terminal speed At+cbst=7,x,x; (9600 Baud GSM)
E1 Set Command Echo mode E1
L2 No effect
M1 No effect
Q0 Set result code presentation mode Q0
V1 Set result code format V1
X4 X4
Y0 Not available
%D0 Auto FDN0 dialling %D0
%U0 Autobauding serial Interface Not available
&C1 &C1
&D0 &D0
&G0 +ifc=x,1
&Y0 Set user parameters Automatically on power up
\N0 RLP on/off F +cbst=x,0,(0 or 1)
S00:000 Number of rings before answering call S0=x
M1 (1...5) M20 (1...255)
S01:000 Ring counter Not available
S02:043 Escape sequence Character Automatically (+)
S03:013 S3=x
S04:010 S4=x
S05:008 S5=x