Connection Manager Registry Settings for Portable Navigation Devices

10/16/2008

Applies to Windows Embedded NavReady

This topic describes the registry settings that you can use to configure Connection Manager.

Suspend-and-Resume

The HKEY_LOCAL_MACHINE\Comm\ConnMgr\Planner\Settings registry key controls the Suspend-and-Resume behavior of a connection. A connected Suspend-and-Resume-capable connection does not have to be disconnected when a voice call is connected. If the network does not support simultaneous voice and data (SVD), the data connection goes into a suspended state during a voice call and cannot send or receive any data.

For more information, refer to Making a Suspend-and-Resume Data Connection During a Voice Call for Portable Navigation Devices.

The following table shows the values under this registry key.

Value	Type	Description
SuspendResume	REG_MULTI_SZ	This value specifies connections that are Suspend-and-Resume capable and can remain connected even when they are not being used by any application. To specify a GSM or CDMA Suspend-and-Resume packet data connection, set this value to the dial string that must be dialed to make this connection. The dial string lists the connection by its APN, for GSM, or by dial number for CDMA. The dial string uses hexadecimal values and comma delimiters. You can specify multiple dial strings. The default value of SuspendResume is set to the ~GPRS! dial string. This is the dial string, or dial string prefix, that applies to all GSM packet data connections and specifies that they all should be treated as Suspend-and-Resume capable. By default, CDMA data connections are not Suspend-and-Resume capable and therefore do not have a SuspendResume registry value. The following registry key example shows how to set this value: HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\ConnMgr\Planner\Settings] "SuspendResume"=hex(7):\ 7e,47,50,52,53,21,00,00,00,00 To disable the feature, set the value to a null string.
RetryCount	REG_DWORD	Specifies the number of retry attempts Connection Manager makes to reestablish a connection. Default is 4. Note: The Cellcore.reg file sets this value to 1.
CacheTime	REG_DWORD	Specifies the number of seconds that a non-exclusive connection request remains cached. Such connections typically do not use a VPN. Default is 60. This cache time applies only if the default cache time was specified when the non-exclusive connection request was previously released. This happens if an application previously called ConnMgrReleaseConnection to release the connection, and the lCache parameter was set to 1.
VPNCacheTime	REG_DWORD	Specifies the number of seconds that an exclusive connection request, such as a VPN connection request, remains cached. Default is 60. This cache time applies only if the default cache time was specified when the non-exclusive connection request was previously released. This happens if an application previously called ConnMgrReleaseConnection to release the connection, and the lCache parameter was set to 1).
CoeffCost	REG_DWORD	Specifies the cost coefficient for the connection. Default is 10000.
CoeffLatency	REG_DWORD	Specifies the latency coefficient for the connection. Default is 10000.
CoeffBandwidth	REG_DWORD	Specifies the bandwidth coefficient for the connection. Default is 10000.
AlwaysOnRetryInterval	REG_DWORD	Specifies in milliseconds how frequently Connection Manager tries to connect a disconnected AlwaysOn data connection. Default is 1,800,000, which equates to 30 minutes. For more information about AlwaysOn data connections, see AlwaysOn Data Connections for Portable Navigation Devices.

Note

Provision all other connection attributes by using Configuration Service Providers. For more information, see Connection Manager Configuration for Portable Navigation Devices.

See Also

Other Resources

Connection Manager for Portable Navigation Devices