ISDNQ921 Class Reference

ISDN Q.921 implementation on top of a hardware interface. More...

#include <yatesig.h>

Inheritance diagram for ISDNQ921:

List of all members.

Public Member Functions
	ISDNQ921 (const NamedList &params, const char *name=0, ISDNQ921Management *mgmt=0, u_int8_t tei=0)
virtual	~ISDNQ921 ()
virtual bool	initialize (const NamedList *config)
u_int64_t	dataTimeout () const
virtual bool	multipleFrame (u_int8_t tei, bool establish, bool force)
virtual bool	sendData (const DataBlock &data, u_int8_t tei, bool ack)
bool	sendSabme ()
virtual void	cleanup ()
void	setDebug (bool printFrames, bool extendedDebug)
Protected Member Functions
virtual void	destroyed ()
virtual void	timerTick (const Time &when)
virtual bool	receivedPacket (const DataBlock &packet)
bool	receivedFrame (ISDNFrame *frame)
virtual bool	notify (SignallingInterface::Notification event)
void	reset ()
Friends
class	ISDNQ921Management

---

Detailed Description

ISDN Q.921 implementation on top of a hardware interface.

Q.921 ISDN Layer 2 implementation on top of a hardware HDLC interface

---

Constructor & Destructor Documentation

ISDNQ921	(	const NamedList &	params,
		const char *	name = 0,
		ISDNQ921Management *	mgmt = 0,
		u_int8_t	tei = 0
	)

Constructor Initialize this object and the component

Parameters:

params	Layer's and TelEngine::ISDNLayer2 parameters
name	Name of this component
mgmt	TEI management component
tei	Value of TEI for this component

virtual ~ISDNQ921

(

)

[virtual]

Destructor

---

Member Function Documentation

virtual void cleanup

(

)

[virtual]

Emergency release. Send 'disconnect' command. Reset all data. Set state to 'Released' This method is thread safe

Implements ISDNLayer2.

u_int64_t dataTimeout

(

)

const [inline]

Get the timeout of a data frame. After that, a higher layer may retransmit data

Returns:

The timeout of a data frame

virtual void destroyed

(

)

[inline, protected, virtual]

Detach links. Disposes memory

Reimplemented from SignallingComponent.

References SignallingReceiver::attach(), ISDNLayer2::attach(), SignallingComponent::destroyed(), and TelEngine::destruct().

virtual bool initialize

(

const NamedList *

config

)

[virtual]

Configure and initialize Q.921 and its interface

Parameters:

config

Optional configuration parameters override

Returns:

True if Q.921 and the interface were initialized properly

Reimplemented from SignallingComponent.

virtual bool multipleFrame	(	u_int8_t	tei,
		bool	establish,
		bool	force
	)		[virtual]

Implements Q.921 DL-ESTABLISH and DL-RELEASE request primitives If accepted, the primitive is enqueued for further processing This method is thread safe

Parameters:

tei	This layer's TEI
establish	True to establish. False to release
force	True to establish even if we already are in this mode. This parameter is ignored if establish is false

Returns:

True if the request was accepted

Reimplemented from ISDNLayer2.

virtual bool notify

(

SignallingInterface::Notification

event

)

[protected, virtual]

Process a notification generated by the attached interface This method is thread safe

Parameters:

event

Notification event reported by the interface

Returns:

True if notification was processed

Reimplemented from SignallingReceiver.

bool receivedFrame

(

ISDNFrame *

frame

)

[protected]

Process the frame received

Parameters:

frame

Pointer to frame to process

Returns:

True if the frame was processed

virtual bool receivedPacket

(

const DataBlock &

packet

)

[protected, virtual]

Process a packet received by the receiver's interface This method is thread safe

Parameters:

packet

The received packet

Returns:

True if message was successfully processed

Implements SignallingReceiver.

void reset

(

)

[protected]

Reset object if not in Released state. Drop all frames This method is thread safe

virtual bool sendData	(	const DataBlock &	data,
		u_int8_t	tei,
		bool	ack
	)		[virtual]

Implements Q.921 DL-DATA and DL-UNIT DATA request primitives Send data through the HDLC interface This method is thread safe

Parameters:

data	Data to send
tei	The TEI to send with the data frane
ack	True to send an acknowledged frame, false to send an unacknowledged one

Returns:

False if the request was not accepted or send operation failed

Reimplemented from ISDNLayer2.

bool sendSabme

(

)

[inline]

Send a SABME frame to reset the layer

Returns:

True if a SABME frame was sent

void setDebug	(	bool	printFrames,
		bool	extendedDebug
	)		[inline]

Set debug data of this layer

Parameters:

printFrames	Enable/disable frame printing on output
extendedDebug	Enable/disable hex data dump if print frames is enabled

virtual void timerTick

(

const Time &

when

)

[protected, virtual]

Method called periodically to check timeouts This method is thread safe

Parameters:

when	Time to use as computing base for events and timeouts

Reimplemented from SignallingComponent.

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

• yatesig.h