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.