AT Command Set

4.38 AT+CPWD Change password

Use this command when you want to

•change PIN1 or PIN2

•change the password supplied from your provider for call barring

•set individual phone security passwords

See Chapters 4.21 and 8.13 for more information on the various lock features. The AT^SPWD command is a Siemens defined command equivalent to AT+CPWD. See Chapter 8.35.

Test command

Response

 

AT+CPWD=?

TA returns a list of pairs which represent the available facilities and the maxi-

 

mum length of the associated password.

 

+CPWD: (list of supported (<fac>, <pwdlength>)s) OK

 

If error is related to ME functionality:

 

+CME ERROR: <err>

 

Parameter

 

 

<fac>

see execute command

 

<pwdlength> integer max. length of password

 

 

 

Execute command

Response

 

AT+CPWD =

TA sets a new password for the facility lock function.

<fac>, [<oldpwd>],

OK

 

<newpwd>

 

 

 

If error is related to ME functionality:

 

+CME ERROR: <err>

 

Parameter

 

 

<fac> Phone security locks set by manufacturer or client:

 

"SC" SIM (lock SIM card). SIM asks SIM PIN1 when ME is switched

 

 

on and when this lock command is issued.

 

"P2" SIM PIN2. Used to access the functions listed in Chapter 4.36.

 

"PS"

Phone locked to SIM (device code). The "PS" password may ei-

 

 

ther be individually specified by the client or, depending on the

 

 

subscription, supplied from the provider (e.g. with a prepaid mo-

 

 

bile).

 

Note:

Each, SIM PIN1 and SIM PIN2 are assigned a PUK to unblock a

 

 

disabled PIN.

 

 

The "PS" password, however, is never associated with a PUK. If

 

 

it is incorrectly entered three times, the Master Phone Code is

 

 

required. See Chapter 4.35.1

 

Locks set by the manufacturer:

 

"PF" lock Phone to the very first SIM card

 

"PN"

Network Personalisation

 

"PU" Network-subset Personalisation

 

"PP" Service-Provider Personalisation

 

"PC"

Corporate Personalisation

 

Note:

Typical examples of factory set locks are prepaid phones or net-

 

 

work locks (e.g. if the operation of a mobile is restricted to a spe-

 

 

cific provider or operator). The locks can only be set by the

 

 

manufacturer and need to be agreed upon between the parties

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MC35 specifications

The Siemens MC35 is a compact and versatile modem designed primarily for mobile communication, data transmission, and machine-to-machine (M2M) applications. Launched in the early 2000s, it quickly became popular due to its blend of performance, reliability, and ease of integration, making it a solid choice for developers and businesses.

One of the key features of the MC35 is its support for GSM and GPRS technologies. This allows it to connect seamlessly to various networks, enabling users to transmit data at speeds that were impressive for its time. The GPRS capability can offer data rates of up to 171.2 kbps, allowing for efficient data transfer even in areas with limited connectivity.

The MC35 is designed to support both SMS and voice functionalities, making it adaptable for a range of applications. This includes remote monitoring, telemetry, and alarm signaling. The ability to send and receive SMS messages is a significant advantage for applications that require immediate alerts and notifications, enhancing its utility in security systems and industrial automation.

Furthermore, the modem is equipped with a range of interfaces, including serial communication (RS232), which makes it compatible with various hardware devices. This facilitates easy integration into existing systems, whether for industrial machinery or consumer electronics. Additionally, it features a robust software development kit (SDK), which enables developers to create custom applications tailored to their specific requirements.

Power consumption is another notable characteristic of the Siemens MC35. It is engineered to be energy-efficient, which is especially important for battery-operated devices or systems that require a prolonged operation without frequent recharging or maintenance.

In terms of physical characteristics, the MC35 is compact and lightweight, allowing it to fit into various enclosure designs without occupying much space. Its durability ensures it can perform reliably in different environments, making it suitable for outdoor and industrial applications.

To summarize, the Siemens MC35 stands out as a reliable modem with a rich feature set that includes GSM and GPRS support, SMS and voice capabilities, easy integration through various interface options, and energy-efficient operation. Its adaptability makes it a valuable tool for a wide array of communication and data transmission tasks, solidifying its place in the evolution of mobile communications technology.
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