Specifications

TC65 Release Notes
Strictly Confidential / Released
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TC65_rn_v01.041 Page 6 of 8 17.10.2005
accept only the command AT+CPIN=<MasterPhoneCode>, <newPassword> which sets
the “PS” lock once again. To remove the “PS” lock use the command AT+CLCK as
described in [1].
The commands AT+CPIN=<MasterPhoneCode> and ATD*#0003*MasterPhoneCode#
will be supported again in later TC65 releases.
• The string parameters of the AT^SJNET read and write command (<bearer service>,
<entry point>, <login>, <password> and <dns>) are currently coded in ASCII character
set only.
In later releases of TC65 the settings of AT+CSCS will apply as specified in [1].
• DNS configuration: In some networks, automatic DNS assignment may cause the TC65
module to shut down unintentionally when the subscriber attempts to set up a network
connection. The problem may occur if the network has no valid DNS server, but in rare
cases it has been observed even though both the module and the network are configured
for automatic DNS assignment. Setting manual DNS server addresses in the network
resolves the problem.
Also, note that even if a network has no automatic DNS service at all, it is necessary to
set a DNS address unequal 0.0.0.0. This means for example, when you create an
Internet profile with AT^SICS bear in mind that the “dns1” parameter must be set.
Otherwise, if not set, the default value 0.0.0.0 would be assumed which does not work in
a network without automatic DNS service.
The problems are related only to features based on the embedded TCP/IP stack of TC65,
such as the Internet Service commands and the Java application used with TC65.
Connections set up over the Dial-up network do not use the embedded TCP/IP stack and
are not affected.
• Before setting AT^SCFG="MEopMode/Airplane/OnStart",off" or AT^SCFG="MEopMode/
Airplane/OnStart",on" please enter the read command "AT^SCFG=
"MEopMode/Airplane/OnStart".
• Charge-only mode and overtemperature conditions: If the upper temperature limit is
exceeded while the charger is plugged the module shuts down and restarts into Charge-
only mode as specified in [2].
Then, the following error occurs: After cooling down the module and trying to switch from
Charge-only mode to Normal mode or Airplane mode, the module shortly starts up and
switches off again although the temperature is back to normal.
To avoid this problem, disconnect the charger and wait for the “^SHUTDOWN” URC.
Then the module can be started again without any problems, for example by using the
IGT line or connecting the charger.
• If you wish to use the WinMux driver supplied by Siemens for implementing Multiplex
applications under Windows 2000 or Windows XP take care to use the latest driver.
Particularly if you want to operate the USB interface in Multiplex mode, do not use any
WinMux drivers delivered with earlier Siemens GSM module types. The latest version
delivered with TC65 is 2.2.0.0. To check the version number under Windows right-click
the winmux2k.sys file and select the Version tab.
If the WinMux driver is used on the USB interface, it is not recommended to send the
AT^SMSO command while Multiplex mode is active. To quit Multiplex mode and switch
off the module, first close the Multiplex channels, then open the host application without
Multiplex mode and finally enter AT^SMSO. Remember that the host application running
on the USB interface must be closed before restarting the USB interface as described
in [2].