LINEADDRESSCAPS

The LINEADDRESSCAPS structure describes the capabilities of a specified address.

typedef struct lineaddresscaps_tag {

DWORD dwTotalSize;

DWORD dwNeededSize;

DWORD dwUsedSize;

DWORD dwLineDeviceID;

DWORD dwAddressSize;

DWORD dwAddressOffset;

DWORD dwDevSpecificSize;

DWORD dwDevSpecificOffset;

DWORD dwAddressSharing;

DWORD dwAddressStates;

DWORD dwCallInfoStates;

DWORD dwCallerIDFlags;

DWORD dwCalledIDFlags;

DWORD dwConnectedIDFlags;

DWORD dwRedirectionIDFlags;

DWORD dwRedirectingIDFlags;

DWORD dwCallStates;

DWORD dwDialToneModes;

DWORD dwBusyModes;

DWORD dwSpecialInfo;

DWORD dwDisconnectModes;

DWORD dwMaxNumActiveCalls;

DWORD dwMaxNumOnHoldCalls;

DWORD dwMaxNumOnHoldPendingCalls;

DWORD dwMaxNumConference;

DWORD dwMaxNumTransConf;

DWORD dwAddrCapFlags;

DWORD dwCallFeatures;

DWORD dwRemoveFromConfCaps;

DWORD dwRemoveFromConfState;

DWORD dwTransferModes;

DWORD dwParkModes;

DWORD dwForwardModes;

DWORD dwMaxForwardEntries;

DWORD dwMaxSpecificEntries;

DWORD dwMinFwdNumRings;

DWORD dwMaxFwdNumRings;

DWORD dwMaxCallCompletions;

DWORD dwCallCompletionConds;

DWORD dwCallCompletionModes;

DWORD dwNumCompletionMessages;

DWORD dwCompletionMsgTextEntrySize;

DWORD dwCompletionMsgTextSize;

DWORD dwCompletionMsgTextOffset;

DWORD dwAddressFeatures;

DWORD dwPredictiveAutoTransferStates;

DWORD dwNumCallTreatments;

DWORD dwCallTreatmentListSize;

DWORD dwCallTreatmentListOffset;

DWORD dwDeviceClassesSize;

DWORD dwDeviceClassesOffset;

DWORD dwMaxCallDataSize;

DWORD dwCallFeatures2;

DWORD dwMaxNoAnswerTimeout;

DWORD dwConnectedModes;

DWORD dwOfferingModes;

DWORD dwAvailableMediaModes;

} LINEADDRESSCAPS, FAR *LPLINEADDRESSCAPS;

Members
dwTotalSize

The total size in bytes allocated to this data structure.

dwNeededSize

The size in bytes for this data structure that is needed to hold all the returned information.

dwUsedSize

The size in bytes of the portion of this data structure that contains useful information.

dwLineDeviceID

The device ID of the line device with which this address is associated.

dwAddressSize

dwAddressOffset

The size in bytes of the variably sized address field and the offset in bytes from the beginning of this data structure.

dwDevSpecificSize

dwDevSpecificOffset

The size in bytes of the variably sized device-specific field and the offset in bytes from the beginning of this data structure.

dwAddressSharing

The sharing mode of the address. Values are:

LINEADDRESSSHARING_PRIVATE

An address with private sharing mode is only assigned to a single line or station.

LINEADDRESSSHARING_BRIDGEDEXCL

An address with a bridged-exclusive sharing mode is assigned to one or more other lines or stations. The exclusive portion refers to the fact that only one of the bridged parties can be connected with a remote party at any given time.

LINEADDRESSSHARING_BRIDGEDNEW

An address with a bridged-new sharing mode is assigned to one or more other lines or stations. The new portion refers to the fact that activities by the different bridged parties result in the creation of new calls on the address.

LINEADDRESSSHARING_BRIDGEDSHARED

An address with a bridged-shared sharing mode is also assigned to one or more other lines or stations. The shared portion refers to the fact that if one of the bridged parties is connected with a remote party, the remaining bridged parties can share in the conversation (as in a conference) by activating that call appearance.

LINEADDRESSSHARING_MONITORED

An address with a monitored address mode simply monitors the status of that address. The status is either idle or in use. The message LINE_ADDRESSSTATE notifies the application about these changes.

dwAddressStates

This field contains the address states changes for which the application may get notified in the LINE_ADDRESSSTATE message. It uses the following LINEADDRESSSTATE_ constants:

LINEADDRESSSTATE_OTHER

Address status items other than those listed below have changed. The application should check the current address status to determine which items have changed.

LINEADDRESSSTATE_DEVSPECIFIC

The device-specific item of the address status has changed.

LINEADDRESSSTATE_INUSEZERO

The address has changed to idle (it is not in use by any stations).

LINEADDRESSSTATE_INUSEONE

The address has changed from being idle or from being in use by many bridged stations to being in use by just one station.

LINEADDRESSSTATE_INUSEMANY

The monitored or bridged address has changed to being in use by one station to being used by more than one station.

LINEADDRESSSTATE_NUMCALLS

The number of calls on the address has changed. This is the result of events such as a new inbound call, an outbound call on the address, or a call changing its hold status.

LINEADDRESSSTATE_FORWARD

The forwarding status of the address has changed, including the number of rings for determining a "no answer" condition. The application should check the address status to retrieve details about the address's current forwarding status.

LINEADDRESSSTATE_TERMINALS

The terminal settings for the address have changed.

LINEADDRESSSTATE_CAPSCHANGE

Indicates that, due to configuration changes made by the user or other circumstances, one or more of the fields in the LINEADDRESSCAPS structure for the address have changed. The application should use lineGetAddressCaps to read the updated structure. If a service provider sends a LINE_ADDRESSSTATE message containing this value to TAPI, TAPI will pass it along to applications that have negotiated TAPI version 0x00010004 or above; applications negotiating a previous API version will receive LINE_LINEDEVSTATE messages specifying LINEDEVSTATE_REINIT, requiring them to shutdown and reinitialize their connection to TAPI in order to obtain the updated information.

dwCallInfoStates

This field describes the call information elements that are meaningful for all calls on this address. An application may get notified about changes in some of these states in LINE_CALLINFO messages. It uses the following LINECALLINFOSTATE_ constants:

LINECALLINFOSTATE_OTHER

Call information items other than those listed below have changed. The application should check the current call information to determine which items have changed.

LINECALLINFOSTATE_DEVSPECIFIC

The device-specific field of the call information.

LINECALLINFOSTATE_BEARERMODE

The bearer mode field of the call information record.

LINECALLINFOSTATE_RATE

The rate field of the call information record.

LINECALLINFOSTATE_MEDIAMODE

The media-mode field of the call information record.

LINECALLINFOSTATE_APPSPECIFIC

The application-specific field of the call information record.

LINECALLINFOSTATE_CALLID

The call ID field of the call information record.

LINECALLINFOSTATE_RELATEDCALLID

The related call ID field of the call information record.

LINECALLINFOSTATE_ORIGIN

The origin field of the call information record.

LINECALLINFOSTATE_REASON

The reason field of the call information record.

LINECALLINFOSTATE_COMPLETIONID

The completion ID field of the call information record.

LINECALLINFOSTATE_NUMOWNERINCR

The number of owner field in the call information record was increased.

LINECALLINFOSTATE_NUMOWNERDECR

The number of owner field in the call information record was decreased.

LINECALLINFOSTATE_NUMMONITORS

The number of monitors field in the call information record has changed.

LINECALLINFOSTATE_TRUNK

The trunk field of the call information record has changed.

LINECALLINFOSTATE_CALLERID

One of the callerID-related fields of the call information record has changed.

LINECALLINFOSTATE_CALLEDID

One of the calledID-related fields of the call information record has changed.

LINECALLINFOSTATE_CONNECTEDID

One of the connectedID-related fields of the call information record has changed.

LINECALLINFOSTATE_REDIRECTIONID

One of the redirectionID-related fields of the call information record has changed.

LINECALLINFOSTATE_REDIRECTINGID

One of the redirectingID-related fields of the call information record has changed.

LINECALLINFOSTATE_DISPLAY

The display field of the call information record.

LINECALLINFOSTATE_USERUSERINFO

The user-to-user information of the call information record.

LINECALLINFOSTATE_HIGHLEVELCOMP

The high-level compatibility field of the call information record.

LINECALLINFOSTATE_LOWLEVELCOMP

The low-level compatibility field of the call information record.

LINECALLINFOSTATE_CHARGINGINFO

The charging information of the call information record.

LINECALLINFOSTATE_TERMINAL

The terminal mode information of the call information record.

LINECALLINFOSTATE_DIALPARAMS

The dial parameters of the call information record.

LINECALLINFOSTATE_MONITORMODES

One or more of the digit, tone, or media monitoring fields in the call information record has changed.

dwCallerIDFlags

dwCalledIDFlags

dwConnectedIDFlags

dwRedirectionIDFlags

dwRedirectingIDFlags

These fields describe the various party ID information types that may be provided for calls on this address. It uses the following LINECALLPARTYID_ constants:

LINECALLPARTYID_BLOCKED

Caller ID information for the call has been blocked by the caller but would otherwise have been available.

LINECALLPARTYID_OUTOFAREA

Caller ID information for the call is not available because it is not propagated all the way by the network.

LINECALLPARTYID_NAME

The caller ID information for the call is the caller's name (from a table maintained inside the switch). It is provided in the caller ID name variably sized field.

LINECALLPARTYID_ADDRESS

The caller ID information for the call is the caller's number and is provided in the caller ID variably sized field.

LINECALLPARTYID_PARTIAL

Caller ID information for the call is valid but is limited to partial number information.

LINECALLPARTYID_UNKNOWN

Caller ID information is currently unknown; it may become known later.

LINECALLPARTYID_UNAVAIL

Caller ID information is unavailable and will not become known later.

dwCallStates

This field describes the various call states that can possibly be reported for calls on this address. This parameter uses the following LINECALLSTATE_ constants:

LINECALLSTATE_IDLE

The call is idle

no call exists.

LINECALLSTATE_OFFERING

The call is being offered to the station, signaling the arrival of a new call. In some environments, a call in the offering state does not automatically alert the user; alerting is done by the switch instructing the line to ring. It does not affect any call states.

LINECALLSTATE_ACCEPTED

The call was offering and has been accepted. This indicates to other (monitoring) applications that the current owner application has claimed responsibility for answering the call. In ISDN, this also initiates alerting to both parties.

LINECALLSTATE_DIALTONE

The call is receiving a dial tone from the switch, which means that the switch is ready to receive a dialed number.

LINECALLSTATE_DIALING

Destination address information (a phone number) is being sent to the switch over the call. Note that the operation lineGenerateDigits does not place the line into the dialing state.

LINECALLSTATE_RINGBACK

The call is receiving ringback from the called address. Ringback indicates that the other station has been reached and is being alerted.

LINECALLSTATE_BUSY

The call is receiving a busy tone. Busy tone indicates that the call cannot be completed

either a circuit (trunk) or the remote party's station are in use.

LINECALLSTATE_SPECIALINFO

Special information is sent by the network. Special information is typically sent when the destination cannot be reached.

LINECALLSTATE_CONNECTED

The call has been established and the connection is made. Information is able to flow over the call between the originating address and the destination address.

LINECALLSTATE_PROCEEDING

Dialing has completed and the call is proceeding through the switch or telephone network.

LINECALLSTATE_ONHOLD

The call is on hold by the switch.

LINECALLSTATE_CONFERENCED

The call is currently a member of a multiparty conference call.

LINECALLSTATE_ONHOLDPENDCONF

The call is currently on hold while it is being added to a conference.

LINECALLSTATE_ONHOLDPENDTRANSF

The call is currently on hold awaiting transfer to another number.

LINECALLSTATE_DISCONNECTED

The remote party has disconnected from the call.

LINECALLSTATE_UNKNOWN

The state of the call is not known. This may be due to limitations of the call progress detection implementation.

dwDialToneModes

This field describes the various dial tone modes that can possibly be reported for calls made on this address. This field is meaningful only if the dialtone call state can be reported. It uses the following LINEDIALTONEMODE_ constants:

LINEDIALTONEMODE_NORMAL

This is a "normal" dial tone, which typically is a continuous tone.

LINEDIALTONEMODE_SPECIAL

This is a special dial tone indicating a certain condition is currently in effect.

LINEDIALTONEMODE_INTERNAL

This is an internal dial tone, as within a PBX.

LINEDIALTONEMODE_EXTERNAL

This is an external (public network) dial tone.

LINEDIALTONEMODE_UNKNOWN

The dial tone mode is currently unknown but may become known later.

LINEDIALTONEMODE_UNAVAIL

The dial tone mode is unavailable and will not become known.

wBusyModes

This field describes the various busy modes that can possibly be reported for calls made on this address. This field is meaningful only if the busy call state can be reported. It uses the following LINEBUSYMODE_ constants:

LINEBUSYMODE_STATION

The busy signal indicates that the called party's station is busy. This is usually signaled with a "normal" busy tone.

LINEBUSYMODE_TRUNK

The busy signal indicates that a trunk or circuit is busy. This is usually signaled with a "long" busy tone.

LINEBUSYMODE_UNKNOWN

The busy signal's specific mode is currently unknown but may become known later.

LINEBUSYMODE_UNAVAIL

The busy signal's specific mode is unavailable and will not become known.

dwSpecialInfo

This field describes the various special information types that can possibly be reported for calls made on this address. This field is meaningful only if the specialInfo call state can be reported. It uses the following LINESPECIALINFO_ constants:

LINESPECIALINFO_NOCIRCUIT

This special information tone precedes a no-circuit or emergency announcement (trunk blockage category).

LINESPECIALINFO_CUSTIRREG

This special information tone precedes a vacant number, AIS, Centrex number change and nonworking station, access code not dialed or dialed in error, manual intercept operator message (customer irregularity category).

LINESPECIALINFO_REORDER

This special information tone precedes a reorder announcement (equipment irregularity category).

LINESPECIALINFO_UNKNOWN

Specifics about the special information tone are currently unknown but may become known later.

LINESPECIALINFO_UNAVAIL

Specifics about the special information tone are unavailable and will not become known.

dwDisconnectModes

This field describes the various disconnect modes that can possibly be reported for calls made on this address. This field is meaningful only if the disconnected call state can be reported. It uses the following LINEDISCONNECTMODE_ constants:

LINEDISCONNECTMODE_NORMAL

This is a "normal" disconnect request by the remote party; the call was terminated normally.

LINEDISCONNECTMODE_UNKNOWN

The reason for the disconnect request is unknown.

LINEDISCONNECTMODE_REJECT

The remote user has rejected the call.

LINEDISCONNECTMODE_PICKUP

The call was picked up from elsewhere.

LINEDISCONNECTMODE_FORWARDED

The call was forwarded by the switch.

LINEDISCONNECTMODE_BUSY

The remote user's station is busy.

LINEDISCONNECTMODE_NOANSWER

The remote user's station does not answer.

LINEDISCONNECTMODE_NODIALTONE

A dial tone was not detected within a service-provider defined timeout, at a point during dialing when one was expected (such as at a "W" in the dialable string). This can also occur without a service-provider-defined timeout period or without a value specified in the dwWaitForDialTone member of the LINEDIALPARAMS structure.

LINEDISCONNECTMODE_BADADDRESS

The destination address in invalid.

LINEDISCONNECTMODE_UNREACHABLE

The remote user could not be reached.

LINEDISCONNECTMODE_CONGESTION

The network is congested.

LINEDISCONNECTMODE_INCOMPATIBLE

The remote user's station equipment is incompatible with the type of call requested.

LINEDISCONNECTMODE_UNAVAIL

The reason for the disconnect is unavailable and will not become known later.

dwMaxNumActiveCalls

This field contains the maximum number of active call appearances that the address can handle. This number does not include calls on hold or calls on hold pending transfer or conference.

dwMaxNumOnHoldCalls

This field contains the maximum number of call appearances at the address that can be on hold.

dwMaxNumOnHoldPendingCalls

This field contains the maximum number of call appearances at the address that can be on hold pending transfer or conference.

dwMaxNumConference

This field contains the maximum number of parties that can be conferenced in a single conference call on this address.

dwMaxNumTransConf

This field specifies the number of parties (including "self") that can be added in a conference call that is initiated as a generic consultation call using lineSetupTransfer.

dwAddrCapFlags

This field contains a series of packed bit flags that describe a variety of address capabilities. It uses the following LINEADDRCAPFLAGS_ constants:

LINEADDRCAPFLAGS_FWDNUMRINGS

Specifies whether the number of rings for a "no answer" can be specified when forwarding calls on no answer.

LINEADDRCAPFLAGS_PICKUPGROUPID

Specifies whether or not a group ID is required for call pickup.

LINEADDRCAPFLAGS_SECURE

Specifies whether or not calls on this address can be made secure at call-setup time.

LINEADDRCAPFLAGS_BLOCKIDDEFAULT

Specifies whether the network by default sends or blocks caller ID information when making a call on this address. If TRUE, ID information is blocked by default; if FALSE, ID information is transmitted by default.

LINEADDRCAPFLAGS_BLOCKIDOVERRIDE

Specifies whether the default setting for sending or blocking of caller ID information can be overridden per call. If TRUE, override is possible; if FALSE, override is not possible.

LINEADDRCAPFLAGS_DIALED

Specifies whether a destination address can be dialed on this address for making a call. TRUE if a destination address must be dialed; FALSE if the destination address is fixed (as with a "hot phone").

LINEADDRCAPFLAGS_ORIGOFFHOOK

Specifies whether the originating party's phone can automatically be taken offhook when making calls.

LINEADDRCAPFLAGS_DESTOFFHOOK

Specifies whether the called party's phone can automatically be forced offhook when making calls.

LINEADDRCAPFLAGS_FWDCONSULT

Specifies whether call forwarding involves the establishment of a consultation call.

LINEADDRCAPFLAGS_SETUPCONFNULL

Specifies whether setting up a conference call starts out with an initial call (FALSE) or with no initial call (TRUE).

LINEADDRCAPFLAGS_AUTORECONNECT

Specifies whether dropping a consultation call automatically reconnects to the call on consultation hold. TRUE if reconnect happens automatically; otherwise, FALSE.

LINEADDRCAPFLAGS_COMPLETIONID

Specifies whether the completion IDs returned by lineCompleteCall are useful and unique. TRUE is useful; otherwise, FALSE.

LINEADDRCAPFLAGS_TRANSFERHELD

Specifies whether a (hard) held call can be transferred. Often, only calls on consultation hold may be able to be transferred.

LINEADDRCAPFLAGS_CONFERENCEHELD

Specifies whether a (hard) held call can be conferenced to. Often, only calls on consultation hold may be able to be added to as a conference call.

LINEADDRCAPFLAGS_ PARTIALDIAL

Specifies whether partial dialing is available.

LINEADDRCAPFLAGS_FWDSTATUSVALID

Specifies whether the forwarding status in the LINEADDRESSSTATUS structure for this address is valid.

LINEADDRCAPFLAGS_ FWDINTEXTADDR

Specifies whether internal and external calls can be forwarded to different forwarding addresses. This flag is meaningful only if forwarding of internal and external calls can be controlled separately. It is TRUE if internal and external calls can be forwarded to different destination addresses; otherwise, FALSE.

LINEADDRCAPFLAGS_ FWDBUSYNAADDR

Specifies whether call forwarding for busy and for no answer can use different forwarding addresses. This flag is meaningful only if forwarding for busy and for no answer can be controlled separately. It is TRUE if forwarding for busy and for no answer can use different destination addresses; otherwise, FALSE.

LINEADDRCAPFLAGS_ACCEPTTOALERT

TRUE if an offering call must be accepted using lineAccept to start alerting the users at both ends of the call; otherwise, FALSE. Typically, this is only used with ISDN.

LINEADDRCAPFLAGS_CONFDROP

TRUE if invoking lineDrop on a conference call parent also has the side effect of dropping (disconnecting) the other parties involved in the conference call; FALSE if dropping a conference call still allows the other parties to talk among themselves.

LINEADDRCAPFLAGS_ PICKUPCALLWAIT

TRUE if linePickup can be used to pick up a call detected by the user as a "call waiting" call; otherwise FALSE.

dwCallFeatures

This field specifies the switching capabilities or features available for all calls on this address using the LINECALLFEATURE_ constants. This member represents the call-related features which may possibly be available on an address (static availability as opposed to dynamic availability). Invoking a supported feature requires the call to be in the proper state and the underlying line device to be opened in a compatible mode. A zero in a bit position indicates that the corresponding feature is never available. A one indicates that the corresponding feature may be available if the application has the right privileges to the call and the call is in the appropriate state for the operation to be meaningful. This field allows an application to discover which call features can be (and which can never be) supported by the address.

dwRemoveFromConfCaps

This field specifies the address's capabilities for removing calls from a conference call. It uses the following LINEREMOVEFROMCONF_ constants:

LINEREMOVEFROMCONF_NONE

Parties cannot be removed from the conference call.

LINEREMOVEFROMCONF_LAST

Only the most recently added party can be removed from the conference call.

LINEREMOVEFROMCONF_ANY

Any participating party can be removed from the conference call.

dwRemoveFromConfState

This field uses the LINECALLSTATE_ constants to specify the state of the call after it has been removed from a conference call.

dwTransferModes

This field specifies the address's capabilities for resolving transfer requests. It uses the following LINETRANSFERMODE_ constants:

LINETRANSFERMODE_TRANSFER

Resolve the initiated transfer by transferring the initial call to the consultation call.

LINETRANSFERMODE_CONFERENCE

Resolve the initiated transfer by conferencing all three parties into a three-way conference call. A conference call is created and returned to the application.

dwParkModes

This field specifies the different call park modes available at this address. It uses the LINEPARKMODE_ constants:

LINEPARKMODE_DIRECTED

Specifies directed call park. The address where the call is to be parked must be supplied to the switch.

LINEPARKMODE_NONDIRECTED

Specifies nondirected call park. The address where the call is parked is selected by the switch and provided by the switch to the application.

dwForwardModes

This field specifies the different modes of forwarding available for this address. It uses the following LINEFORWARDMODE_ constants:

LINEFORWARDMODE_UNCOND

Forward all calls unconditionally, irrespective of their origin. Use this value when unconditional forwarding for internal and external calls cannot be controlled separately. Unconditional forwarding overrides forwarding on busy and/or no answer conditions.

LINEFORWARDMODE_UNCONDINTERNAL

Forward all internal calls unconditionally. Use this value when unconditional forwarding for internal and external calls can be controlled separately.

LINEFORWARDMODE_UNCONDEXTERNAL

Forward all external calls unconditionally. Use this value when unconditional forwarding for internal and external calls can be controlled separately.

LINEFORWARDMODE_UNCONDSPECIFIC

Forward all calls that originated at a specified address unconditionally (selective call forwarding).

LINEFORWARDMODE_BUSY

Forward all calls on busy, irrespective of their origin. Use this value when forwarding for internal and external calls on busy and on no answer cannot be controlled separately.

LINEFORWARDMODE_BUSYINTERNAL

Forward all internal calls on busy. Use this value when forwarding for internal and external calls on busy and on no answer can be controlled separately.

LINEFORWARDMODE_BUSYEXTERNAL

Forward all external calls on busy. Use this value when forwarding for internal and external calls on busy and on no answer can be controlled separately.

LINEFORWARDMODE_BUSYSPECIFIC

Forward all calls that originated at a specified address on busy (selective call forwarding).

LINEFORWARDMODE_NOANSW

Forward all calls on no answer, irrespective of their origin. Use this value when call forwarding for internal and external calls on no answer cannot be controlled separately.

LINEFORWARDMODE_NOANSWINTERNAL

Forward all internal calls on no answer. Use this value when forwarding for internal and external calls on no answer can be controlled separately.

LINEFORWARDMODE_NOANSWEXTERNAL

Forward all external calls on no answer. Use this value when forwarding for internal and external calls on no answer can be controlled separately.

LINEFORWARDMODE_NOANSWSPECIFIC

Forward all calls that originated at a specified address on no answer (selective call forwarding).

LINEFORWARDMODE_BUSYNA

Forward all calls on busy/no answer, irrespective of their origin. Use this value when forwarding for internal and external calls on busy and on no answer cannot be controlled separately.

LINEFORWARDMODE_BUSYNAINTERNAL

Forward all internal calls on busy/no answer. Use this value when call forwarding on busy and on no answer cannot be controlled separately for internal calls.

LINEFORWARDMODE_BUSYNAEXTERNAL

Forward all external calls on busy/no answer. Use this value when call forwarding on busy and on no answer cannot be controlled separately for internal calls.

LINEFORWARDMODE_BUSYNASPECIFIC

Forward all calls that originated at a specified address on busy/no answer (selective call forwarding).

dwMaxForwardEntries

Specifies the maximum number of entries that can be passed to lineForward in the lpForwardList parameter.

dwMaxSpecificEntries

Specifies the maximum number of entries in the lpForwardList parameter passed to lineForward that can contain forwarding instructions based on a specific caller ID (selective call forwarding). This field is zero if selective call forwarding is not supported.

dwMinFwdNumRings

Specifies the minimum number of rings that can be set to determine when a call is officially considered "no answer."

dwMaxFwdNumRings

Specifies the maximum number of rings that can be set to determine when a call is officially considered "no answer." If this number of rings cannot be set, then dwMinFwdNumRings and dwMaxNumRings will be equal.

dwMaxCallCompletions

Specifies the maximum number of concurrent call completion requests that can be outstanding on this line device. Zero implies that call completion is not available.

dwCallCompletionCond

Specifies the different call conditions under which call completion can be requested. This field uses the following LINECALLCOMPLCOND_ constants:

LINECALLCOMPLCOND_BUSY

Complete the call under the busy condition.

LINECALLCOMPLCOND_NOANSWER

Complete the call under the ringback no answer condition.

dwCallCompletionModes

Specifies the way in which the call can be completed. This field uses the following LINECALLCOMPLCOND_ constants:

LINECALLCOMPLMODE_CAMPON

Queues the call until the call can be completed.

LINECALLCOMPLMODE_CALLBACK

Requests the called station to return the call when it returns to idle.

LINECALLCOMPLMODE_INTRUDE

Adds the application to the existing call at the called station if busy (barge in).

LINECALLCOMPLMODE_MESSAGE

Leave a short predefined message for the called station (Leave Word Calling). A specific message can be identified.

dwNumCompletionMessages

Specifies the number of call completion messages that can be selected from when using the LINECALLCOMPLMODE_MESSAGE option. Individual messages are identified by values in the range 0 through one less than dwNumCompletionMessages.

dwCompletionMsgTextEntrySize

Specifies the size in bytes of each of the call completion text descriptions pointed at by dwCompletionMsgTextSize/Offset.

dwCompletionMsgTextSize

dwCompletionMsgTextOffset

The size in bytes and the offset in bytes from the beginning of this data structure of the variably sized field containing descriptive text about each of the call completion messages. Each message is dwCompletionMsgTextEntrySize bytes long. The string format of these textual descriptions is indicated by dwStringFormat in the line's device capabilities.

dwAddressFeatures

This field specifies the features available for this address using the LINEADDRFEATURE_ constants. Invoking a supported feature requires the address to be in the proper state and the underlying line device to be opened in a compatible mode. A zero in a bit position indicates that the corresponding feature is never available. A one indicates that the corresponding feature may be available if the address is in the appropriate state for the operation to be meaningful. This field allows an application to discover which address features can be (and which can never be) supported by the address.

dwPredictiveAutoTransferStates

The call state or states upon which a call made by a predictive dialer can be set to automatically transfer the call to another address; one or more of the LINECALLSTATE_ constants. The value 0 indicates automatic transfer based on call state is unavailable.

dwNumCallTreatments

The number of entries in the array of LINECALLTREATMENTENTRY structures delimited by dwCallTreatmentSize and dwCallTreatmentOffset.

dwCallTreatmentListSize

dwCallTreatmentListOffset

The total size in bytes and offset from the beginning of LINEADDRESSCAPS of an array of LINECALLTREATMENTENTRY structures, indicating the call treatments supported on the address (which can be selected using lineSetCallTreatment). The value will be dwNumCallTreatments times SIZEOF (LINECALLTREATMENTENTRY).

dwDeviceClassesSize

dwDeviceClassesOffset

Length in bytes and offset from the beginning of LINEADDRESSCAPS of a string consisting of the device class identifiers supported on this address for use with lineGetID, separated by nulls; the last class indentifier is followed by two nulls.

dwMaxCallDataSize

The maximum number of bytes that an application can set in LINECALLINFO using lineSetCallData.

dwCallFeatures2

Specifies additional switching capabilities or features available for all calls on this address using the LINECALLFEATURE2_ constants. It is an extension of the dwCallFeatures member.

dwMaxNoAnswerTimeout

The maximum value in seconds that can be set in the dwNoAnswerTimeout member in LINECALLPARAMS when making a call. A value of 0 indicates that automatic abandonment of unanswered calls is not supported by the service provider, or that the timeout value is not adjustable by applications.

dwConnectedModes

Specifies the LINECONNECTEDMODE_ values that may appear in the dwCallStateMode member of LINECALLSTATUS and in LINE_CALLSTATE messages for calls on this address.

dwOfferingModes

Specifies the LINEOFFERINGMODE_ values that may appear in the dwCallStateMode member of LINECALLSTATUS and in LINE_CALLSTATE messages for calls on this address.

dwAvailableMediaModes

Indicates the media modes that can be invoked on new calls created on this address, when the dwAddressFeatures member indicates that new calls are possible. If this field is zero, it indicates that the service provider either does not know or cannot indicate which media modes are available, in which case any or all of the media modes indicated in the dwMediaModes field in LINEDEVCAPS may be available.

Remarks
Device-specific extensions should use the DevSpecific (dwDevSpecificSize and dwDevSpecificOffset) variably sized area of this data structure.

Older applications will have been compiled without this field in the LINEADDRESSCAPS structure, and using a SIZEOF LINEADDRESSCAPS smaller than the new size. The application passes in a dwAPIVersion parameter with the lineGetAddressCaps function, which can be used for guidance by TAPI in handling this situation. If the application passes in a dwTotalSize less than the size of the fixed portion of the structure as defined in the dwAPIVersion specified, LINEERR_STRUCTURETOOSMALL will be returned. If sufficient memory has been allocated by the application, before calling TSPI_lineGetAddressCaps, TAPI will set the dwNeededSize and dwUsedSize fields to the fixed size of the structure as it existed in the specified API version.

New service providers (which support the new API version) must examine the API version passed in. If the API version is less than the highest version supported by the provider, the service provider must not fill in fields not supported in older API versions, as these would fall in the variable portion of the older structure.

New applications must be cognizant of the API version negotiated, and not examine the contents of fields in the fixed portion beyond the original end of the fixed portion of the structure for the negotiated API version.

The members dwPredictiveAutoTransferStates through dwAvailableMediaModes are available only to applications that request an API version of 0x00020000 or greater when calling lineGetAddressCaps.

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