SS7MTP2 Class Reference

SS7 Layer 2 implementation on top of a hardware interface. More...

#include <yatesig.h>

Inheritance diagram for SS7MTP2:

List of all members.

Public Types
enum	ErrorCorrection { Basic, Preventive, Adaptive }
Public Member Functions
	SS7MTP2 (const NamedList &params, unsigned int status=OutOfService)
virtual	~SS7MTP2 ()
virtual bool	initialize (const NamedList *config)
virtual bool	transmitMSU (const SS7MSU &msu)
virtual void	recoverMSU (int sequence)
virtual unsigned int	status () const
virtual bool	aligned () const
virtual bool	operational () const
virtual bool	control (Operation oper, NamedList *params=0)
virtual bool	notify (SignallingInterface::Notification event)
Protected Member Functions
virtual void	destroyed ()
virtual void	timerTick (const Time &when)
virtual bool	receivedPacket (const DataBlock &packet)
virtual void	processFISU ()
virtual void	processLSSU (unsigned int status)
bool	transmitLSSU (unsigned int status)
bool	transmitLSSU ()
bool	transmitFISU ()
void	startAlignment (bool emergency=false)
void	abortAlignment (bool retry=true)
bool	startProving ()

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Detailed Description

SS7 Layer 2 implementation on top of a hardware interface.

Q.703 SS7 Layer 2 (Data Link) implementation on top of a hardware interface

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Member Enumeration Documentation

enum ErrorCorrection

Types of error correction

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Constructor & Destructor Documentation

SS7MTP2	(	const NamedList &	params,
		unsigned int	status = OutOfService
	)

Constructor

Parameters:

params	Layer's parameters
status	Initial status

virtual ~SS7MTP2

(

)

[virtual]

Destructor

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Member Function Documentation

void abortAlignment

(

bool

retry = true

)

[protected]

Abort an alignment procedure if link errors occur

Parameters:

retry

Keep trying to align

virtual bool aligned

(

)

const [virtual]

Check if the link is aligned. The link may not be operational, the other side may be still proving.

Returns:

True if the link is aligned

virtual bool control	(	Operation	oper,
		NamedList *	params = 0
	)		[virtual]

Execute a control operation. Operations can change the link status or can query the aligned status.

Parameters:

oper	Operation to execute
params	Optional parameters for the operation

Returns:

True if the command completed successfully, for query operations also indicates the data link is aligned and operational

Reimplemented from SS7Layer2.

virtual void destroyed

(

)

[inline, protected, virtual]

Remove all attachements. Disposes the memory

Reimplemented from SignallingComponent.

References SignallingReceiver::attach(), SS7Layer2::attach(), SignallingComponent::destroyed(), and TelEngine::destruct().

virtual bool initialize

(

const NamedList *

config

)

[virtual]

Configure and initialize MTP2 and its interface

Parameters:

config

Optional configuration parameters override

Returns:

True if MTP2 and the interface were initialized properly

Reimplemented from SignallingComponent.

virtual bool notify

(

SignallingInterface::Notification

event

)

[virtual]

Process a notification generated by the attached interface

Parameters:

event

Notification event reported by the interface

Returns:

True if notification was processed

Reimplemented from SignallingReceiver.

virtual bool operational

(

)

const [virtual]

Check if the link is aligned and operational

Returns:

True if the link is operational

Implements SS7Layer2.

virtual void processFISU

(

)

[protected, virtual]

Process a received Fill-In Signal Unit

virtual void processLSSU

(

unsigned int

status

)

[protected, virtual]

Process a received Link Status Signal Unit

Parameters:

status

Link status indications

virtual bool receivedPacket

(

const DataBlock &

packet

)

[protected, virtual]

Process a Signalling Packet received by the hardware interface

Returns:

True if message was successfully processed

Implements SignallingReceiver.

virtual void recoverMSU

(

int

sequence

)

[virtual]

Remove the MSUs waiting in the transmit queue and return them

Parameters:

sequence

First sequence number to recover, flush earlier packets

Reimplemented from SS7Layer2.

void startAlignment

(

bool

emergency = false

)

[protected]

Initiates alignment and proving procedure

Parameters:

emergency

True if emergency alignment is desired

bool startProving

(

)

[protected]

Start the link proving period

Returns:

True if proving period was started

virtual unsigned int status

(

)

const [virtual]

Retrieve the current link status indications

Returns:

Link status indication bits

Reimplemented from SS7Layer2.

virtual void timerTick

(

const Time &

when

)

[protected, virtual]

Periodical timer tick used to perform alignment and housekeeping

Parameters:

when	Time to use as computing base for events and timeouts

Reimplemented from SS7Layer2.

bool transmitFISU

(

)

[protected]

Push a Fill-In Signal Unit down the protocol stack

Returns:

True if message was successfully queued

bool transmitLSSU

(

unsigned int

status

)

[protected]

Push a Link Status Signal Unit down the protocol stack

Parameters:

status

Link status indications

Returns:

True if message was successfully queued

bool transmitLSSU

(

)

[inline, protected]

Push a Link Status Signal Unit with the current status down the protocol stack

Returns:

True if message was successfully queued

References SS7MTP2::transmitLSSU().

Referenced by SS7MTP2::transmitLSSU().

virtual bool transmitMSU

(

const SS7MSU &

msu

)

[virtual]

Push a Message Signal Unit down the protocol stack

Parameters:

msu	MSU data to transmit

Returns:

True if message was successfully queued

Implements SS7Layer2.

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

• yatesig.h