Siemens HC15 manual Selecting Umts or GSM

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Getting Started with HC15

Confidential / Preliminary

s

3.5Selecting UMTS or GSM

The GSM 07.07 operator selection command AT+COPS has been enhanced to enable the subscriber to select whether to use UMTS or GSM. You can quickly switch back and forth between both network types while the ME remains registered.

Write command: AT+COPS=<mode>[, <format>[, <oper>[, <act>]]]

The parameter <act> (access technology) can take the values listed below. The parameter is stored non-volatile.

0GSM network

2UMTS network

Note: By factory default, an automatic network selection mode is set which enables the ME to select either UMTS or GSM, depending on the network coverage. This automatic mode remains enabled until you explicitly set either UMTS or GSM using the <act> parameter of AT+COPS. Setting the <act> parameter forces the ME to select either UMTS only or accordingly, GSM only. If the specified network is not available, the network registration will be disabled.

 

at+cops?

 

Querying the current network mode.

 

 

 

+COPS: 0,0,"T-Mobile D",2

The ME is registered to the German

 

 

 

OK

 

operator T-Mobile and uses UMTS.

 

 

 

 

Selecting the GSM network.

 

 

 

 

 

 

 

 

 

 

 

 

 

at+cops=0,,,0

#(or at+cops=,,,0)

 

 

OK

 

 

 

 

 

at+cops?

 

Query the current network type.

 

 

+COPS: 0,0,"T-Mobile D",0

The response confirms that the ME has

 

 

OK

 

changed to the GSM network.

 

 

 

 

 

 

 

at+cops=0,,,2

#(or at+cops=,,,2)

Selecting the UMTS network.

 

 

OK

 

 

 

 

 

at+cops?

 

 

 

 

 

+COPS: 0,0,"T-Mobile D",2

 

 

 

 

OK

 

 

 

 

 

at+cpin?

 

There is no need to enter the SIM PIN again.

 

 

+CPIN: READY

 

 

 

 

OK

Furthermore, the command AT+COPS serves to query or specify several modes of selecting the GSM network operator. These functions are not discussed in this document.

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2007-01-22

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Contents User’s Guide Getting Started with HC15 Getting Started with HC15Figures ContentsRelated Documents IntroductionTechnical Requirements for Running HC15 on DSB75 Installation and ConfigurationGetting Started with HC15 Installing the Hardware Getting Started with HC15 Installing USB and Ethernet Drivers Getting Started with HC15 Next Siemens Hsdpa USB Modem Installed Devices and ToolsSiemens USB Com Port Uninstalling Drivers and the Connection ManagerSiemens Wireless Ethernet Adapter Uninstalling Earlier Connection Manager Uninstalling Drivers and Tools from Earlier HC15 ReleasesUninstalling Earlier Drivers AT Command Interpreter Using the HC15 ModuleRegistering to the Network Switching on the HC15Switching off the HC15 Selecting Umts or GSM Defining the PDP Context Attaching to the Hsdpa or Gprs NetworkAnswering a Voice Call MT Making a Voice Call MOHsdpa or Gprs Data Transfer Hsdpa or Gprs Data Transfer via Dial-Up Network Terminating the dial-up connection Adding a New Dial-up Connection Adding and Configuring a New Dial-Up ConnectionAppendix Getting Started with HC15 Getting Started with HC15 Configuring a Dial-up Connection Getting Started with HC15 Most cases, it is sufficient to accept the default settings Abbreviation Description AbbreviationsHC15-DSB75 adapter board switch settings Do not use X201, X202