See Also
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The RIL proxy supports simultaneous GPRS connections over PPP. This means that multiple APNs can be simultaneously configured for use. Each GPRS connection is associated with a PDP context. The number of supported PDP contexts, and therefore the number of supported simultaneous GPRS connections, must be configured in the registry.
The HKEY_LOCAL_MACHINE\Comm\Cellular\RIL\Contextregistry key must be set to a value greater than one to enable simultaneous connections. If this registry key does not exist, or if it is set to a value that is less than or equal to one, the Connection Manager and the RIL proxy cannot use simultaneous GPRS connections or multiple APNs.
For more information about the HKEY_LOCAL_MACHINE\Comm\Cellular\RILregistry key, see RIL Registry Settings.