How to use the global settings to manage modems/locations for two-box device

To manipulate the default modems and locations you can use the global settings functions provided by CCommsDatabase. Two examples of using these global settings are provided below.

Create a modem record as follows:

TUint32 recordId;
table=theDb->OpenTableLC(TPtrC(MODEM)); //TheDb is of type CCommsDatabase
table->InsertRecord(recordId);
//
//Fill in the appropriate fields for the modem record
//  
table->PutRecordChanges();
CleanupStack::PopAndDestroy(); //table 

Using the CCommsDatabase::SetGlobalSettingL() function, set the MODEM_DATA_FAX setting with the COMMDB_ID of the modem record to be used as default modem for data transactions.

theDb->SetGlobalSettingL(TPtrC(MODEM_DATA_FAX), recordId); 

The following example demonstrates how to obtain the ID for the modem to be used for data transactions and open the record corresponding to the default modem.

TUint32 defaultModemDataId;
theDb->GetGlobalSettingL(TPtrC(MODEM_DATA_FAX),defaultModemDataId);
CCommsDbTableView* table = 
theDb->OpenViewMatchingUintLC(TPtrC(MODEM),TPtrC(COMMDB_ID),defaultModemDataId);

Similar techniques may be used to set or obtain the global settings MODEM_PHONE_SERVICES_SMS, LOCATION_DATA_FAX and LOCATION_PHONE_SERVICES_SMS.