Packet Context Tutorial

This tutorial describes how to define a context for the packet service sub-session.

1. 
   To create a context do one of the following:
   1. 
      Use RPacketContext::OpenNewContext() to open a new context.
   2. 
      Use RPacketContext::OpenExistingContext() to open an existing context.
2. 
   Use RPacketContext::SetConfig() to set the parameters for a context. The context parameters are defined in :
   1. 
      TContextConfigR99_R4
   2. 
      TContextConfig_R5
   3. 
      TContextConfigGPRS
   4. 
      TContextConfigCDMA
   5. 
      TProtocolType
   6. 
      TGSNAddress
   7. 
      TProtocolAddress
   8. 
      TProtocolConfigBufferV2
   9. 
      TMiscProtocolBuffer
   10. 
       TDnsInfoV2
   11. 
       TAnonymousAccess
   12. 
       TPacketFlowIndicator
   The MBMS parameters are defined in:
   1. 
      RPacketMbmsContext::TContextConfigMbmsV1()
   2. 
      TMbmsServicePriority
3. 
   Use RPacketContext::GetConfig() to retrieve the information about a context.
4. 
   Use RPacketContext::NotifyConfigChanged() to get the notification of any changes to the current context parameters.
5. 
   Use RPacketContext::Activate() to activate a context
6. 
   Initialise the context with RPacketContext::InitialiseContext().
7. 
   Use RPacketContext::Deactivate() to deactivate a context.
8. 
   Use RPacketContext::Delete() to delete a context.
9. 
   Use RPacketContext::GetStatus() to retrieve the status of the current contexts. The context statuses of a context are defined in TContextStatus enumeration.
10. 
    Use RPacketContext::NotifyStatusChange() to get the notification of any changes to the status of a context.
11. 
    Use RPacketContext::GetProfileName() to retrieve the quality of service profile used by a context.
12. 
    Use RPacketContext::GetDataVolumeTransferred() to retrieve the information related to the data sent in the packet service using a context.
13. 
    Use RPacketContext::NotifyDataTransferred() to receive the notification about the change in the amount of data transferred.
14. 
    Use RPacketContext::NotifyConnectionSpeedChange() to retrieve the information about the connection speed of a packet service sub-session.
15. 
    Use RPacketContext::GetLastErrorCause() to retrieve the last error that occurred on a packet service sub-session.
16. 
    Use RPacketContext::ModifyActiveContext() to change the active context.
17. 
    Use RTelSubSessionBase::CancelAsyncRequest() to cancel any of the above commands.
18. 
    Use RPacketContext::Close() to close the handle to a context.