
Chapter 20: Registry-based WWAN API
Network Status
233
Psion Mobile Devices Developers Guide
20.2.3 Network Status
See also Network Status on page 232.
HKEY_LOCAL_MACHINE\System\State\Phone
20.2.4 Packet Data Status
See also Packet Data Status on page 232.
HKEY_LOCAL_MACHINE\System\State\Phone
0x00001000 SN_PHONEACTIVEDATACALL_BITMASK the modem has an active packet
data connection.
0x00004000 SN_PHONECALLONHOLD_BITMASK there is a call is on hold.
0x00008000 SN_PHONECONFERENCECALL_BITMASK there is a conference call in progress.
0x00010000 SN_PHONEINCOMINGCALL_BITMASK there is an incoming call (ringing), or a
waiting call, that has not yet been accepted
by the user.
0x00020000 SN_PHONECALLCALLING_BITMASK an outgoing call is being dialled, and it has
not been accepted by the other party.
0x00100000 SN_PHONEGPRSCOVERAGE_BITMASK the GPRS packet data service for the GSM
family of networks is available (this includes
GPRS, EGPRS / EDGE, UMTS, HSDPA,
and HSPA).
0x00200000 SN_PHONENOSERVICE_BITMASK the WWAN modem is not registered on
any network.
0x00400000 SN_PHONESEARCHINGFORSERVICE_BITMASK the WWAN modem is currently searching
for a network.
0x00800000 SN_PHONEHOMESERVICE_BITMASK the WWAN modem is currently registered
on its home network.
0x10000000 SN_PHONE1XRTTCOVERAGE_BITMASK the 1xRTT packet data service for the CDMA
family of networks is available (this includes
1xRTT, 1xEV-DO Rev. 0, and 1xEV-DO Rev. A).
0x20000000 SN_PHONECALLTALKING_BITMASK there is an active voice call.
Bitmask Windows Mobile Definition Name (snapi.h) When set...
Value Name Value Type Description
Signal Strength Raw REG_DWORD Signal strength expressed as a percentage of the maximum
signal strength.
Current Operator Name REG_SZ Name of the current mobile network.
Service Provider Name REG_SZ Name of the home network (if stored on the SIM).
Value Name Value Type Description
Cellular System Available REG_DWORD Bitmask that indicates the packet data service to which the WWAN
modem is attached (and to which it can connect).
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