Q931 Class Reference

`#include <q931.h>`

Inheritance diagram for Q931:

## Public Types

enum

MsgTypes {
NationalEscapeMsg = 0x00, AlertingMsg = 0x01, CallProceedingMsg = 0x02, ConnectMsg = 0x07,
ConnectAckMsg = 0x0f, ProgressMsg = 0x03, SetupMsg = 0x05, SetupAckMsg = 0x0d,
ResumeMsg = 0x26, ResumeAckMsg = 0x2e, ResumeRejectMsg = 0x22, SuspendMsg = 0x25,
SuspendAckMsg = 0x2d, SuspendRejectMsg = 0x21, UserInformationMsg = 0x20, DisconnectMsg = 0x45,
ReleaseMsg = 0x4d, ReleaseCompleteMsg = 0x5a, RestartMsg = 0x46, RestartAckMsg = 0x4e,
SegmentMsg = 0x60, CongestionCtrlMsg = 0x79, InformationMsg = 0x7b, NotifyMsg = 0x6e,
StatusMsg = 0x7d, StatusEnquiryMsg = 0x75, FacilityMsg = 0x62
}

enum | InformationElementCodes { BearerCapabilityIE = 0x04, CauseIE = 0x08, ChannelIdentificationIE = 0x18, FacilityIE = 0x1c, ProgressIndicatorIE = 0x1e, CallStateIE = 0x14, DisplayIE = 0x28, KeypadIE = 0x2c, SignalIE = 0x34, ConnectedNumberIE = 0x4c, CallingPartyNumberIE = 0x6c, CalledPartyNumberIE = 0x70, RedirectingNumberIE = 0x74, UserUserIE = 0x7e }
enum | InformationTransferCapability { TransferSpeech, TransferUnrestrictedDigital = 8, TransferRestrictedDigital = 9, Transfer3_1kHzAudio = 16, TrasnferUnrestrictedDigitalWithTones = 17, TransferVideo = 24 }

enum

CauseValues {
UnknownCauseIE = 0, UnallocatedNumber = 1, NoRouteToNetwork = 2, NoRouteToDestination = 3,
SendSpecialTone = 4, MisdialledTrunkPrefix = 5, ChannelUnacceptable = 6, NormalCallClearing = 16,
UserBusy = 17, NoResponse = 18, NoAnswer = 19, SubscriberAbsent = 20,
CallRejected = 21, NumberChanged = 22, Redirection = 23, ExchangeRoutingError = 25,
NonSelectedUserClearing = 26, DestinationOutOfOrder = 27, InvalidNumberFormat = 28, FacilityRejected = 29,
StatusEnquiryResponse = 30, NormalUnspecified = 31, NoCircuitChannelAvailable = 34, NetworkOutOfOrder = 38,
TemporaryFailure = 41, Congestion = 42, RequestedCircuitNotAvailable = 44, ResourceUnavailable = 47,
ServiceOptionNotAvailable = 63, InvalidCallReference = 81, ClearedRequestedCallIdentity = 86, IncompatibleDestination = 88,
IENonExistantOrNotImplemented = 99, TimerExpiry = 102, ProtocolErrorUnspecified = 111, InterworkingUnspecified = 127,
ErrorInCauseIE = 0x100
}

enum

CallStates {
CallState_Null = 0, CallState_CallInitiated = 1, CallState_OverlapSending = 2, CallState_OutgoingCallProceeding = 3,
CallState_CallDelivered = 4, CallState_CallPresent = 6, CallState_CallReceived = 7, CallState_ConnectRequest = 8,
CallState_IncomingCallProceeding = 9, CallState_Active = 10, CallState_DisconnectRequest = 11, CallState_DisconnectIndication = 12,
CallState_SuspendRequest = 15, CallState_ResumeRequest = 17, CallState_ReleaseRequest = 19, CallState_OverlapReceiving = 25,
CallState_ErrorInIE = 0x100
}

enum

SignalInfo {
SignalDialToneOn, SignalRingBackToneOn, SignalInterceptToneOn, SignalNetworkCongestionToneOn,
SignalBusyToneOn, SignalConfirmToneOn, SignalAnswerToneOn, SignalCallWaitingTone,
SignalOffhookWarningTone, SignalPreemptionToneOn, SignalTonesOff = 0x3f, SignalAlertingPattern0 = 0x40,
SignalAlertingPattern1, SignalAlertingPattern2, SignalAlertingPattern3, SignalAlertingPattern4,
SignalAlertingPattern5, SignalAlertingPattern6, SignalAlertingPattern7, SignalAlertingOff = 0x4f,
SignalErrorInIE = 0x100
}

enum | ProgressIndication { ProgressNotEndToEndISDN = 1, ProgressDestinationNonISDN = 2, ProgressOriginNotISDN = 3, ProgressReturnedToISDN = 4, ProgressServiceChange = 5, ProgressInbandInformationAvailable = 8 }
enum | NumberingPlanCodes { UnknownPlan = 0x00, ISDNPlan = 0x01, DataPlan = 0x03, TelexPlan = 0x04, NationalStandardPlan = 0x08, PrivatePlan = 0x09, ReservedPlan = 0x0f }
enum | TypeOfNumberCodes { UnknownType = 0x00, InternationalType = 0x01, NationalType = 0x02, NetworkSpecificType = 0x03, SubscriberType = 0x04, AbbreviatedType = 0x06, ReservedType = 0x07 }

## Public Member Functions

| Q931 ()
| Q931 (const Q931 &other)
Q931 & | operator= (const Q931 &other)
void | BuildFacility (int callRef, PBoolean fromDest)
void | BuildInformation (int callRef, PBoolean fromDest)
void | BuildProgress (int callRef, PBoolean fromDest, unsigned description, unsigned codingStandard=0, unsigned location=0)
void | BuildNotify (int callRef, PBoolean fromDest)
void | BuildCallProceeding (int callRef)
void | BuildSetupAcknowledge (int callRef)
void | BuildAlerting (int callRef)
void | BuildSetup (int callRef=-1)
void | BuildConnect (int callRef)
void | BuildStatus (int callRef, PBoolean fromDest)
void | BuildStatusEnquiry (int callRef, PBoolean fromDest)
void | BuildReleaseComplete (int callRef, PBoolean fromDest)
PBoolean | Decode (const PBYTEArray &data)
PBoolean | Encode (PBYTEArray &data) const
void | PrintOn (ostream &strm) const
PString | GetMessageTypeName () const
unsigned | GetCallReference () const
PBoolean | IsFromDestination () const
MsgTypes | GetMessageType () const
PBoolean | HasIE (InformationElementCodes ie) const
PBYTEArray | GetIE (InformationElementCodes ie, PINDEX idx=0) const
void | SetIE (InformationElementCodes ie, const PBYTEArray &userData, bool append=FALSE)
void | RemoveIE (InformationElementCodes ie)
void | SetBearerCapabilities (InformationTransferCapability capability, unsigned transferRate, unsigned codingStandard=0, unsigned userInfoLayer1=5)
void | SetBearerCapabilities (const PString &caps)
PBoolean | GetBearerCapabilities (InformationTransferCapability &capability, unsigned &transferRate, unsigned *codingStandard=NULL, unsigned *userInfoLayer1=NULL)
void | SetCause (CauseValues value, unsigned standard=0, unsigned location=0)
CauseValues | GetCause (unsigned *standard=NULL, unsigned *location=NULL) const
void | SetCallState (CallStates value, unsigned standard=0)
CallStates | GetCallState (unsigned *standard=NULL) const
void | SetSignalInfo (SignalInfo value)
SignalInfo | GetSignalInfo () const
void | SetKeypad (const PString &digits)
PString | GetKeypad () const
void | SetProgressIndicator (unsigned description, unsigned codingStandard=0, unsigned location=0)
PBoolean | GetProgressIndicator (unsigned &description, unsigned *codingStandard=NULL, unsigned *location=NULL) const
void | SetDisplayName (const PString &name)
PString | GetDisplayName () const
void | SetCallingPartyNumber (const PString &number, unsigned plan=1, unsigned type=0, int presentation=-1, int screening=-1)
PBoolean | GetCallingPartyNumber (PString &number, unsigned *plan=NULL, unsigned *type=NULL, unsigned *presentation=NULL, unsigned *screening=NULL, unsigned defPresentation=0, unsigned defScreening=0) const
void | SetCalledPartyNumber (const PString &number, unsigned plan=1, unsigned type=0)
PBoolean | GetCalledPartyNumber (PString &number, unsigned *plan=NULL, unsigned *type=NULL) const
void | SetRedirectingNumber (const PString &number, unsigned plan=1, unsigned type=0, int presentation=-1, int screening=-1, int reason=-1)
PBoolean | GetRedirectingNumber (PString &number, unsigned *plan=NULL, unsigned *type=NULL, unsigned *presentation=NULL, unsigned *screening=NULL, unsigned *reason=NULL, unsigned defPresentation=0, unsigned defScreening=0, unsigned defReason=0) const
void | SetConnectedNumber (const PString &number, unsigned plan=1, unsigned type=0, int presentation=-1, int screening=-1, int reason=-1)
PBoolean | GetConnectedNumber (PString &number, unsigned *plan=NULL, unsigned *type=NULL, unsigned *presentation=NULL, unsigned *screening=NULL, unsigned *reason=NULL, unsigned defPresentation=0, unsigned defScreening=0, unsigned defReason=0) const
void | SetChannelIdentification (unsigned interfaceType=0, unsigned preferredOrExclusive=0, int channelNumber=1)
PBoolean | GetChannelIdentification (unsigned *interfaceType=NULL, unsigned *preferredOrExclusive=NULL, int *channelNumber=NULL) const

## Static Public Member Functions

static unsigned | GenerateCallReference ()

## Protected Member Functions

| PARRAY (InternalInformationElement, PBYTEArray)
| PDICTIONARY (InternalInformationElements, POrdinalKey, InternalInformationElement)

## Protected Attributes

unsigned | callReference
PBoolean | fromDestination
unsigned | protocolDiscriminator
MsgTypes | messageType
InternalInformationElements | informationElements

## Friends

ostream & | operator<< (ostream &strm, InformationElementCodes ie)
ostream & | operator<< (ostream &strm, CauseValues cause)

## Detailed Description

This class embodies a Q.931 Protocol Data Unit.

## Member Enumeration Documentation

enum Q931::CallStates

Enumerator
CallState_Null |
CallState_CallInitiated |
CallState_OverlapSending |
CallState_OutgoingCallProceeding |
CallState_CallDelivered |
CallState_CallPresent |
CallState_CallReceived |
CallState_ConnectRequest |
CallState_IncomingCallProceeding |
CallState_Active |
CallState_DisconnectRequest |
CallState_DisconnectIndication |
CallState_SuspendRequest |
CallState_ResumeRequest |
CallState_ReleaseRequest |
CallState_OverlapReceiving |
CallState_ErrorInIE |

enum Q931::CauseValues

Enumerator
UnknownCauseIE |
UnallocatedNumber |
NoRouteToNetwork |
NoRouteToDestination |
SendSpecialTone |
MisdialledTrunkPrefix |
ChannelUnacceptable |
NormalCallClearing |
UserBusy |
NoResponse |
NoAnswer |
SubscriberAbsent |
CallRejected |
NumberChanged |
Redirection |
ExchangeRoutingError |
NonSelectedUserClearing |
DestinationOutOfOrder |
InvalidNumberFormat |
FacilityRejected |
StatusEnquiryResponse |
NormalUnspecified |
NoCircuitChannelAvailable |
NetworkOutOfOrder |
TemporaryFailure |
Congestion |
RequestedCircuitNotAvailable |
ResourceUnavailable |
ServiceOptionNotAvailable |
InvalidCallReference |
ClearedRequestedCallIdentity |
IncompatibleDestination |
IENonExistantOrNotImplemented |
TimerExpiry |
ProtocolErrorUnspecified |
InterworkingUnspecified |
ErrorInCauseIE |

enum Q931::InformationElementCodes

Enumerator
BearerCapabilityIE |
CauseIE |
ChannelIdentificationIE |
FacilityIE |
ProgressIndicatorIE |
CallStateIE |
DisplayIE |
KeypadIE |
SignalIE |
ConnectedNumberIE |
CallingPartyNumberIE |
CalledPartyNumberIE |
RedirectingNumberIE |
UserUserIE |

enum Q931::InformationTransferCapability

Enumerator
TransferSpeech |
TransferUnrestrictedDigital |
TransferRestrictedDigital |
Transfer3_1kHzAudio |
TrasnferUnrestrictedDigitalWithTones |
TransferVideo |

enum Q931::MsgTypes

Enumerator
NationalEscapeMsg |
AlertingMsg |
CallProceedingMsg |
ConnectMsg |
ConnectAckMsg |
ProgressMsg |
SetupMsg |
SetupAckMsg |
ResumeMsg |
ResumeAckMsg |
ResumeRejectMsg |
SuspendMsg |
SuspendAckMsg |
SuspendRejectMsg |
UserInformationMsg |
DisconnectMsg |
ReleaseMsg |
ReleaseCompleteMsg |
RestartMsg |
RestartAckMsg |
SegmentMsg |
CongestionCtrlMsg |
InformationMsg |
NotifyMsg |
StatusMsg |
StatusEnquiryMsg |
FacilityMsg |

enum Q931::NumberingPlanCodes

Enumerator
UnknownPlan |
ISDNPlan |
DataPlan |
TelexPlan |
NationalStandardPlan |
PrivatePlan |
ReservedPlan |

enum Q931::ProgressIndication

Enumerator
ProgressNotEndToEndISDN |
ProgressDestinationNonISDN |
ProgressOriginNotISDN |
ProgressReturnedToISDN |
ProgressServiceChange |
ProgressInbandInformationAvailable |

enum Q931::SignalInfo

Enumerator
SignalDialToneOn |
SignalRingBackToneOn |
SignalInterceptToneOn |
SignalNetworkCongestionToneOn |
SignalBusyToneOn |
SignalConfirmToneOn |
SignalAnswerToneOn |
SignalCallWaitingTone |
SignalOffhookWarningTone |
SignalPreemptionToneOn |
SignalTonesOff |
SignalAlertingPattern0 |
SignalAlertingPattern1 |
SignalAlertingPattern2 |
SignalAlertingPattern3 |
SignalAlertingPattern4 |
SignalAlertingPattern5 |
SignalAlertingPattern6 |
SignalAlertingPattern7 |
SignalAlertingOff |
SignalErrorInIE |

enum Q931::TypeOfNumberCodes

Enumerator
UnknownType |
InternationalType |
NationalType |
NetworkSpecificType |
SubscriberType |
AbbreviatedType |
ReservedType |

## Constructor & Destructor Documentation

Q931::Q931 | ( |  | ) |

Q931::Q931 | ( | const Q931 & | other | ) |

## Member Function Documentation

void Q931::BuildAlerting | ( | int | callRef | ) |

void Q931::BuildCallProceeding | ( | int | callRef | ) |

void Q931::BuildConnect | ( | int | callRef | ) |

void Q931::BuildFacility | ( | int | callRef,
|  | PBoolean | fromDest
| ) |  |

void Q931::BuildInformation | ( | int | callRef,
|  | PBoolean | fromDest
| ) |  |

void Q931::BuildNotify | ( | int | callRef,
|  | PBoolean | fromDest
| ) |  |

void Q931::BuildProgress | ( | int | callRef,
|  | PBoolean | fromDest,
|  | unsigned | description,
|  | unsigned | codingStandard = `0`,
|  | unsigned | location = `0`
| ) |  |

void Q931::BuildReleaseComplete | ( | int | callRef,
|  | PBoolean | fromDest
| ) |  |

void Q931::BuildSetup | ( | int | callRef = `-1` | ) |

void Q931::BuildSetupAcknowledge | ( | int | callRef | ) |

void Q931::BuildStatus | ( | int | callRef,
|  | PBoolean | fromDest
| ) |  |

void Q931::BuildStatusEnquiry | ( | int | callRef,
|  | PBoolean | fromDest
| ) |  |

PBoolean Q931::Decode | ( | const PBYTEArray & | data | ) |

PBoolean Q931::Encode | ( | PBYTEArray & | data | ) | const

static unsigned Q931::GenerateCallReference | ( |  | ) |

static

PBoolean Q931::GetBearerCapabilities | ( | InformationTransferCapability & | capability,
|  | unsigned & | transferRate,
|  | unsigned * | codingStandard = `NULL`,
|  | unsigned * | userInfoLayer1 = `NULL`
| ) |  |

Parameters

  capability | Bearer cability enum
  transferRate | Number of 64k B channels
  codingStandard | 0 = ITU-T standardized coding
  userInfoLayer1 | 5 = Recommendations H.221 and H.242

PBoolean Q931::GetCalledPartyNumber | ( | PString & | number,
|  | unsigned * | plan = `NULL`,
|  | unsigned * | type = `NULL`
| ) |  | const

Parameters

  number | Number string
  plan | ISDN/Telephony numbering system
  type | Number type

PBoolean Q931::GetCallingPartyNumber | ( | PString & | number,
|  | unsigned * | plan = `NULL`,
|  | unsigned * | type = `NULL`,
|  | unsigned * | presentation = `NULL`,
|  | unsigned * | screening = `NULL`,
|  | unsigned | defPresentation = `0`,
|  | unsigned | defScreening = `0`
| ) |  | const

Parameters

  number | Number string
  plan | ISDN/Telephony numbering system
  type | Number type
  presentation | Presentation indicator
  screening | Screening indicator
  defPresentation | Default value if octet3a not present
  defScreening | Default value if octet3a not present

unsigned Q931::GetCallReference | ( |  | ) | const

inline

References callReference.

CallStates Q931::GetCallState | ( | unsigned * | standard = `NULL` | ) | const

Parameters

  standard | 0 = ITU-T standardized coding

CauseValues Q931::GetCause | ( | unsigned * | standard = `NULL`,
|  | unsigned * | location = `NULL`
| ) |  | const

Parameters

  standard | 0 = ITU-T standardized coding
  location | 0 = User

PBoolean Q931::GetChannelIdentification | ( | unsigned * | interfaceType = `NULL`,
|  | unsigned * | preferredOrExclusive = `NULL`,
|  | int * | channelNumber = `NULL`
| ) |  | const

Get the limitations to ChannelIdentification.

Parameters

  interfaceType | Interface type
  preferredOrExclusive | Channel negotiation preference
  channelNumber | Channel number

PBoolean Q931::GetConnectedNumber | ( | PString & | number,
|  | unsigned * | plan = `NULL`,
|  | unsigned * | type = `NULL`,
|  | unsigned * | presentation = `NULL`,
|  | unsigned * | screening = `NULL`,
|  | unsigned * | reason = `NULL`,
|  | unsigned | defPresentation = `0`,
|  | unsigned | defScreening = `0`,
|  | unsigned | defReason = `0`
| ) |  | const

Parameters

  number | Number string
  plan | ISDN/Telephony numbering system
  type | Number type
  presentation | Presentation indicator
  screening | Screening indicator
  reason | Reason for redirection
  defPresentation | Default value if octet3a not present
  defScreening | Default value if octet3a not present
  defReason | Default value if octet 3b not present

PString Q931::GetDisplayName | ( |  | ) | const

PBYTEArray Q931::GetIE | ( | InformationElementCodes | ie,
|  | PINDEX | idx = `0`
| ) |  | const

PString Q931::GetKeypad | ( |  | ) | const

MsgTypes Q931::GetMessageType | ( |  | ) | const

inline

References messageType.

PString Q931::GetMessageTypeName | ( |  | ) | const

PBoolean Q931::GetProgressIndicator | ( | unsigned & | description,
|  | unsigned * | codingStandard = `NULL`,
|  | unsigned * | location = `NULL`
| ) |  | const

PBoolean Q931::GetRedirectingNumber | ( | PString & | number,
|  | unsigned * | plan = `NULL`,
|  | unsigned * | type = `NULL`,
|  | unsigned * | presentation = `NULL`,
|  | unsigned * | screening = `NULL`,
|  | unsigned * | reason = `NULL`,
|  | unsigned | defPresentation = `0`,
|  | unsigned | defScreening = `0`,
|  | unsigned | defReason = `0`
| ) |  | const

Parameters

  number | Number string
  plan | ISDN/Telephony numbering system
  type | Number type
  presentation | Presentation indicator
  screening | Screening indicator
  reason | Reason for redirection
  defPresentation | Default value if octet3a not present
  defScreening | Default value if octet3a not present
  defReason | Default value if octet 3b not present

SignalInfo Q931::GetSignalInfo | ( |  | ) | const

PBoolean Q931::HasIE | ( | InformationElementCodes | ie | ) | const

PBoolean Q931::IsFromDestination | ( |  | ) | const

inline

References fromDestination.

Q931& Q931::operator= | ( | const Q931 & | other | ) |

Q931::PARRAY | ( | InternalInformationElement | ,
|  | PBYTEArray |
| ) |  |

protected

Q931::PDICTIONARY | ( | InternalInformationElements | ,
|  | POrdinalKey | ,
|  | InternalInformationElement |
| ) |  |

protected

void Q931::PrintOn | ( | ostream & | strm | ) | const

void Q931::RemoveIE | ( | InformationElementCodes | ie | ) |

void Q931::SetBearerCapabilities | ( | InformationTransferCapability | capability,
|  | unsigned | transferRate,
|  | unsigned | codingStandard = `0`,
|  | unsigned | userInfoLayer1 = `5`
| ) |  |

Parameters

  capability | Bearer cability enum
  transferRate | Number of 64k B channels
  codingStandard | 0 = ITU-T standardized coding
  userInfoLayer1 | 5 = Recommendations H.221 and H.242

void Q931::SetBearerCapabilities | ( | const PString & | caps | ) |

Parameters

  caps | String of comma separated integers or hex for all cap bytes

void Q931::SetCalledPartyNumber | ( | const PString & | number,
|  | unsigned | plan = `1`,
|  | unsigned | type = `0`
| ) |  |

Parameters

  number | Number string
  plan | 1 = ISDN/Telephony numbering system
  type | 0 = Unknown number type

void Q931::SetCallingPartyNumber | ( | const PString & | number,
|  | unsigned | plan = `1`,
|  | unsigned | type = `0`,
|  | int | presentation = `-1`,
|  | int | screening = `-1`
| ) |  |

Parameters

  number | Number string
  plan | 1 = ISDN/Telephony numbering system, see Q.931 Table 4-11 for more
  type | 0 = Unknown number type
  presentation | 0 = presentation allowed, 1 = presentation restricted, -1 = no octet3a
  screening | 0 = user provided, not screened, -1 = no octet3a

void Q931::SetCallState | ( | CallStates | value,
|  | unsigned | standard = `0`
| ) |  |

Parameters

  value | Call state code
  standard | 0 = ITU-T standardized coding

void Q931::SetCause | ( | CauseValues | value,
|  | unsigned | standard = `0`,
|  | unsigned | location = `0`
| ) |  |

Parameters

  value | Cause code
  standard | 0 = ITU-T standardized coding
  location | 0 = User

void Q931::SetChannelIdentification | ( | unsigned | interfaceType = `0`,
|  | unsigned | preferredOrExclusive = `0`,
|  | int | channelNumber = `1`
| ) |  |

Set the limitations to ChannelIdentification.

- the interface identifier cannot be specified
- channel in PRI can only be indicated by number and cannot be indicated by map
- one and only one channel can be indicated
- the coding standard is always ITU Q.931

Parameters

  interfaceType | 0 = basic, 1 = other (e.g. primary)
  preferredOrExclusive | 0 = preferred, 1 = exclusive
  channelNumber | -1 = any, 0 = none/D, 1 = channel 1/B1, etc. 1-15,17-31

void Q931::SetConnectedNumber | ( | const PString & | number,
|  | unsigned | plan = `1`,
|  | unsigned | type = `0`,
|  | int | presentation = `-1`,
|  | int | screening = `-1`,
|  | int | reason = `-1`
| ) |  |

Parameters

  number | Number string
  plan | 1 = ISDN/Telephony numbering system
  type | 0 = Unknown number type
  presentation | 0 = presentation allowed, -1 = no octet3a
  screening | 0 = user provided, not screened
  reason | 0 = Unknown reason , -1 = no octet 3b

void Q931::SetDisplayName | ( | const PString & | name | ) |

void Q931::SetIE | ( | InformationElementCodes | ie,
|  | const PBYTEArray & | userData,
|  | bool | append = `FALSE`
| ) |  |

void Q931::SetKeypad | ( | const PString & | digits | ) |

void Q931::SetProgressIndicator | ( | unsigned | description,
|  | unsigned | codingStandard = `0`,
|  | unsigned | location = `0`
| ) |  |

void Q931::SetRedirectingNumber | ( | const PString & | number,
|  | unsigned | plan = `1`,
|  | unsigned | type = `0`,
|  | int | presentation = `-1`,
|  | int | screening = `-1`,
|  | int | reason = `-1`
| ) |  |

Parameters

  number | Number string
  plan | 1 = ISDN/Telephony numbering system
  type | 0 = Unknown number type
  presentation | 0 = presentation allowed, -1 = no octet3a
  screening | 0 = user provided, not screened
  reason | 0 = Unknown reason , -1 = no octet 3b

void Q931::SetSignalInfo | ( | SignalInfo | value | ) |

## Friends And Related Function Documentation

ostream& operator<< | ( | ostream & | strm,
|  | InformationElementCodes | ie
| ) |  |

friend

ostream& operator<< | ( | ostream & | strm,
|  | CauseValues | cause
| ) |  |

friend

## Field Documentation

unsigned Q931::callReference

protected

Referenced by GetCallReference().

PBoolean Q931::fromDestination

protected

Referenced by IsFromDestination().

InternalInformationElements Q931::informationElements

protected

MsgTypes Q931::messageType

protected

Referenced by GetMessageType().

unsigned Q931::protocolDiscriminator

protected

The documentation for this class was generated from the following file:

- q931.h