Siemens S35i User manual

Modem Command Set Reference Manual
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Manual Reference
Modem Commands
for the SIEMENS Mobile Phone
S35i, C35i, M35i

Modem Command Set Reference Manual
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The command descriptions or example sequences in this document imply no liability or warranty in any
way. The author therefore will take no responsibility and will accept no liability which results of using the
content of this document in any way.
All rights reserved. No part of this work covered by the copyrights hereof may be reproduced or copied in
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information storage and retrieval systems) without written permission of the publisher.
Revisions Overview
Date Version Name Description of revision
23-05-2000 1.0 R.Sc. File created
Table of Contents
1. AT Command Set ...................................................................................................................3

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1. AT Command Set
A command entered at the user port generally starts with a command prefix consisting of the characters ‘AT’.
The remainder of the line is interpreted as a sequence of the commands described below. The commands are not
case-sensitive. More than one command may be given on a single line.
With all commands in Table 1that take a numeric argument this argument may be omitted and defaults to 0.
The ATD command is special: all characters in the same line (or up to a semicolon) are considered part of the
number to dial.
The prefix ‘A/’ repeats the preceding command.
Command Description
A/ Repeat the last command string.
+++ Escape sequence, switches to command mode during call
AT Prefix for all other commands
Command Function (default values in
bold type ) Implementation comments Reference
AAnswer a call V.25 ter
B[n]Sets the bearer service for
data connections (cf.
+CBST).
Parameters:
DNT
72400 bps, asynchronous,
V.22bis
11 4800 bps, asynchronous,
V.32
13 9600 bps, asynchronous,
V.32
25 2400 bps, asynchronous,
V.110 ISDN
27 4800 bps, asynchronous,
V.110 ISDN
29 9600 bps asynchronous,
V.110 ISDN
99 Call: Automatic selection
of the operation mode
in accordance with the
baud rate of the PC.
Answer: All calls are
accepted.
Dx[;] Dial phone number x.
Some prefixes not defined in
V.25 ter are recognised:
V.25 ter, GSM
07.07
IISDN: This phone call
will be made as a ‘UDI’

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Command Function (default values in
bold type ) Implementation comments Reference
call. An ISDN connection
to a V.110 terminal
adapter will be
established. The data
transmission speed is the
same as for an ‘analog’
call (2400 / 4800 / 9600
/ 14400 bps).
P
PPlus: same as ‘+’ character.
E[n]Command echo V.25 ter
H[n]Disconnect existing link V.25 ter
I[n]Display product code
0‘032’
1‘032’
2‘OK’, (check firmware
checksum)
8Display supported
operation modes (cf.
ATB)
9identification of modem
and mobile phone
L[n]Monitor speaker loudness No action V.25 ter
M[n]Monitor speaker mode No action V.25 ter
O[0] Switch back to transparent
mode after +++ interruption V.25 ter
Q[0] Display responses or
messages V.25 ter
Q1 Don't display responses or
messages V.25 ter
Sn=xWrite value xto S register nV.25 ter
Sn?Display value of S register nV.25 ter
V[0] Responses in numeric format V.25 ter
V1 Responses in text format V.25 ter
XReport link with
CONNECT only ignore
busy signal
V.25 ter
X1 Report link with
CONNECT plus baud rate,
ignore busy signal
V.25 ter

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Command Function (default values in
bold type ) Implementation comments Reference
X2 As ATX1 V.25 ter
X3 As ATX1, but report BUSY V.25 ter
X4 As ATX3 V.25 ter
ZReset to default configuration V.25 ter
&C[n] Circuit 109 (Received line
signal detector / DCD)
behaviour
V.25 ter
&C0 DCD always ON
&C1 DCD ON if carrier
detected
&D[n] Circuit 108 (Data terminal
ready / DTR) behaviour V.25 ter
&D0 DTR ignored
&D1 On DTR ON to OFF: go to
online command mode,
don't disconnect
&D2 On DTR ON to OFF:
disconnect go to
command mode.
Automatic answer is
disabled while DTR OFF.
&F Load factory defaults V.25 ter
&V Display current configuration
profile customisable
&WnNo action
&YnNo action
&Zn=xNo action
\A No action
\A1 No action
\A2 No action
\A3 No action
\C No action
\C1 No action
\G No action
\G1 No action
\N No action
\N2 No action
\N3 No action
\N4 No action
\N5 No action

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Command Function (default values in
bold type ) Implementation comments Reference
\N6 No action
\Q[n] Local flow control selection
(DTE ↔DCE) customisable
\Q0 Disable flow control
\Q1 XON-XOFF software flow
control
\Q2 CTS only flow control
\Q3 RTS/CTS flow control
\S Display monitored variables DNT
\V[n} n = 0 No /REL or /RLP
appendix with the ‘connect’
message
n = 1 /REL or /RLP
appendix with the ‘connect’
message
DNT
%An No action
%C No action
%C1 No action
%Dn No action
^S... Routed to MS See gsatxsie.c.DNT, Siemens
Table 1: Basic AT Commands

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The commands in Table 2are used to configure the modem .All other AT commands
specified by leading +C are descripted in the AT Command Set Reference Manual.
Command Function, defaults Implementation comments Reference
+CBST 7,0,1 (9600 bps) GSM07.07
+CRLP 61,61,58,6 GSM07.07
+CR 0GSM07.07
Table 2: Local AT+C (Cellular) Commands
S-Register Function (default values in bold type)
S 0 The number of rings before the Gipsy Soft answers the call (Default: 0, does not answer)
S 3 Command termination character and first character of response trailer (CR)
S 4 Second character of response trailer (LF)
S 6 Editing character; erases the previous character (BS)
S 6 Escape character
S 7 Wait for carrier after dialling (in seconds). (Default: 60)
S 8 + S 9 No Action
S 10 Delay between Lost Carrier and Hang up in 0.1 sec. (Default 2 = 200ms)
S 11 .. S17 No Action
S 18 Bit
0 0 no GSM exit cause 1with GSM exit cause
1 0 no SMS Indication ‘+C...’ 1with incoming SMS Indication ‘+C..’
S 19 ... S99 No Action
Table 3: S-Registers