lineGetCurrentHSCSDStatus

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Use the lineGetCurrentHSCSDStatus function to get the current non-transparent High Speed Circuit Switched Data (HSCSD) configuration.

LONG WINAPI lineGetCurrentHSCSDStatus(
  HLINE hLine,
  LPDWORD lpdwChannelsIn,
  LPDWORD lpdwChannelsOut,
  LPDWORD lpdwChannelCoding,
  LPDWORD lpdwAirInterfaceRate 
);

Parameters

  • hLine
    The line device handle. The line device handle must have been previously obtained by a call to lineOpen with the proper Telephony API (TAPI) device ID specified and a device-specific extension version was successfully negotiated with lineNegotiateExtVersion. For more information about lineNegotiateExtVersion and lineOpen, see the TAPI Functions API Reference topics in the Microsoft® Windows® CE SDK.

  • lpdwChannelsIn
    Points to a DWORD indicating the current number of downstream radio channels. If the phone is not currently in a data call, this value is 0.

  • lpdwChannelsOut
    Points to a DWORD indicating the current number of upstream radio channels. If the phone is not currently in a data call, this value is 0.

    Note   The number of upstream channels is determined by the network.

  • lpdwChannelCoding
    Points to a DWORD indicating the per-channel speed at which the mobile is communicating with the network.

  • lpdwAirInterfaceRate
    Points to a DWORD indicating the speed at which the mobile is communicating with the base station. In the case of an asynchronous connection, this value shall be the incoming data rate.

Return Values

Returns zero if the function completed or a negative error number if an error occurs. The following are possible return values:

LINEERR_RESOURCEUNAVAIL
LINEERR_INVALLINEHANDLE
LINEERR_STRUCTURETOOSMALL
LINEERR_INVALPOINTER
LINEERR_UNINITIALIZED
LINEERR_NOMEM
LINEERR_OPERATIONUNAVAIL
LINEERR_OPERATIONFAILED

Remarks

This function is synchronous. No LINE_REPLY message is sent.

Not implemented for CDMA.

Requirements

Pocket PC Platforms: Pocket PC 2002 and later
OS Versions: Windows CE 3.0 and later
Header: extapi.h
Library: cellcore.lib

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