Properties

The Properties entry contains the binary properties structure that Unimodem requires in order to respond to the GetCommProperties API.

Eight DWORD hexadecimal values are used. For example, 

HKR,, Properties, 1, 80,01,00,00, ff,00,00,00, ff,00,00,00, 07,00,00,00, 0f,00,00,00, f7,03,00,00, 00,c2,01,00, 40,38,00,00

The Profile Calculator tool can be used to create this value.

The Properties entry can be thought of as a C structure, as follows: 

typedef struct ModemProp {
DWORD    DialOptions;                // bitmap of supported options
DWORD    CallSetupFailTimeout;       // Maximum value in seconds
DWORD    InactivityTimeout;          // Maximum value in units 
                                  // specified by InactivityScale
DWORD    SpeakerVolume;              // bitmap of supported values
DWORD    SpeakerMode;                // bitmap of supported values
DWORD    ModemOptions;               // bitmap of supported values
DWORD    MaxDTERate;                 // Maximum value in bit/s
DWORD    MaxDCERate;                 // Maximum value in bit/s
} ModemProp

The DialOptions DWORD is a bit vector of the embedded commands that the modem supports in dial commands:

DIALOPTION_DIALBILLING 0x00000040 Supports wait for bong "$"
DIALOPTION_DIALQUIET 0x00000080 Supports wait for quiet "@"
DIALOPTION_DIALDIALTONE 0x00000100 Supports wait for dial tone "W"

These characters ('&', '@', 'W') cannot be changed. If they are not the same for the modem, these settings can not be used at all. For example, if the modem supports "Wait for bong tone", but uses '!' instead of '&', it must not set DIALOPTION_DIALBILLING, and Unimodem will proceed as if it does not support "Wait for bong tone".

A description of the other elements in the Modem Properties structure follows.

CallSetupFailTimeout This is the maximum value that can be set for the call setup timer. The call setup time is the delay between dialing and responding to an incoming carrier signal after initial connection. If the modem does not detect a carrier within this time, the modem hangs up. If the modem does not have this feature, set the value to 0.
  See also Settings, CallSetupFailTimer registry entry documenation.
InactivityTimeout This is the maximum value that can be set for the data inactivity timer. The Inactivity timeout is the period of data inactivity, while on-line, after which the modem hangs up. If the modem does not have this feature, set the value to 0.
  To convert to the maximum value in seconds, multiply this number by the value in InactivityScale.
See also Settings, InactivityTimeout registry entry documentation.
SpeakerVolume This is a bit vector of possible speaker volume settings
  Supports low speaker volume 0x00000001
Supports med speaker volume 0x00000002
Supports high speaker volume 0x00000004

See also corresponding Settings, SpeakerVolume_XXX registry settings.

SpeakerMode This is a bit vector of possible speaker mode settings.
  Supports speaker mode off 0x00000001
Supports speaker mode dial 0x00000002
Supports speaker mode on 0x00000004
Supports speaker mode setup 0x00000008
See also corresponding Settings, SpeakerMode_XXX registry settings.
ModemOptions This is a bit vector of settings that can be changed using lineSetDevConfig.
  0x00000001 Supports enabling/disabling of data compression negotiation
0x00000002 Supports enabling/disabling of error control protocol negotiation
0x00000004 Supports enabling/disabling of forced error control
0x00000008 Supports enabling/disabling of a cellular protocol
0x00000010 Supports enabling/disabling of hardware flow control
0x00000020 Supports enabling/disabling of software flow control
0x00000040 Supports CCITT/Bell toggling
0x00000080 Supports enabling/disabling of speed negotiation
0x00000100 Supports tone and pulse dialing
0x00000200 Supports blind dialing
0x00000400 Supports CCITT V.21-V.22/CCITT V.23 toggling

See also

Corresponding Settings, ErrorControl; Settings, FlowControl; Settings, Compression; Setting, Modulation; Settings, SpeedNegotiation; Settings, Pulse; Settings, Tone; Settings, Blind registry entry documentation

MaxDTERate The maximum data rate supported between the modem and the computer.
MaxDCERate: The maximum data transmission speed modem to modem.

See also

Registry Entry Name