Siemens TC37 Module - AT Commands Available before Entering the SIM PIN

AT Command Set
TC3X_ATC_01_V04.00 Page 196 of 204 29.05.2002
7.3 AT commands available before entering the SIM PIN
The following table summarizes the AT commands you can use before the SIM PIN has been entered.
Explanation:
l AT command usable without PIN
--- not usable without PIN
n.a. AT command not available at all
AT command Test Read Write /
Execute
Note
Standard V.25ter AT commands
ATD n.a. n.a
l
For emergency calls only
ATE n.a. n.a
l
ATI n.a. n.a
l
ATO n.a. n.a
l
ATQ n.a. n.a
l
ATS3 n.a.
l l
ATS4 n.a.
l l
ATS5 n.a.
l l
AT\Q n.a. n.a.
l
ATSn n.a.
l l
ATS18
l
n.a
l
ATV n.a. n.a
l
ATX n.a. n.a
l
ATZ n.a. n.a
l
AT&C n.a. n.a
l
AT&D n.a. n.a
l
AT&F n.a. n.a
l
AT&V n.a. n.a
l
AT+IPR
l l l
AT commands originating from GSM 07.07
AT+CALA
l l l
AT+CBST
l l l
AT+CCLK
l l l
AT+CFUN
l l l
AT+CGMI
l
n.a.
l
AT+CGMM
l
n.a.
l
AT+CGMR
l
n.a.
l
AT+CGSN
l
n.a.
l
AT+CLIP
l
---
l
AT+CLVL
l l l
Write command in audio mode 2-6
only
AT+CMEE
l l l
AT+CMGF
l l l
AT+CMUT
l l l
Write command depending on audio
mode
AT+CMUX
l l
Error Only mode 0
AT+COPS Phone busy Unknown --- Not useful without PIN