Siemens AC75 - Manual (Page 79)

AC75 AT Command Set
2.15 AT^SM20
s
AC75_ATC_V01.002 Page 79 of 569 10/30/06
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2.15 AT^SM20 Set M20 compatibility mode
M20 is an earlier, widely used SIEMENS GSM engine. The
AT^SM20
command selects different modes of
responses returned upon execution of the commands
ATD
and sms commands like e.g.
AT+CMGW
. Please note
that the
AT^SM20
command has no effect on any other features and is not intended to adjust other differences
between M20 and AC75.
Syntax
Parameter Description
Call setup response mode
Applies only to voice calls.
0
Set compatibility to Siemens mobile phones.
ME will return "OK" immediately after attempting a call with the
ATD
command.
In case of failure, additional call release indications, such as "NO DIAL TONE,
"NO CARRIER", "BUSY" will follow.
1 (&F) Default call setup mode, compatible to M20.
ME will return "OK" in case of a successful connection, otherwise one of the
call release indications "NO DIAL TONE, "NO CARRIER", "BUSY" are indi-
cated.
Response mode for sending and writing short messages
Applies to the sms commands like e.g.
AT+CMGS
and
AT+CMGW
command.
0 Set compatibility to Siemens mobile phones.
ME will return +CMS ERROR: <err> when writing or sending of short mes-
sages fails.
1 (&F) Default mode for sending and writing short messages, compatible to M20.
ME will return "OK", no matter whether or not sms command was successfully
executed.
Test Command
AT^SM20=?
Response(s)
OK
Read Command
AT^SM20?
Response(s)
^SM20: <CallMode>
,
<CmgwMode>
OK
Write Command
AT^SM20= <CallMode>
[,
<CmgwMode>
]
Response(s)
OK
Reference(s) PIN ASC0 ASC1 USB MUX1 MUX2 MUX3 Charge
4
Last
SIEMENS - + + + + + + - - -
<CallMode>
(num)
<CmgwMode>
(num)