SS7Layer2 Class Reference

Abstract SS7 layer 2 (data link) message transfer part. More...

#include <yatesig.h>

Inheritance diagram for SS7Layer2:

List of all members.

Public Types
enum	LinkStatus {   OutOfAlignment = 0, NormalAlignment = 1, EmergencyAlignment = 2, OutOfService = 3,   ProcessorOutage = 4, Busy = 5, O = OutOfAlignment, N = NormalAlignment,   E = EmergencyAlignment, OS = OutOfService, PO = ProcessorOutage, B = Busy }
enum	Operation { Pause = 0x100, Resume = 0x200, Align = 0x300, Status = 0x400 }
Public Member Functions
virtual bool	transmitMSU (const SS7MSU &msu)=0
virtual ObjList *	recoverMSU ()
virtual unsigned int	status () const
virtual const char *	statusName (unsigned int status, bool brief) const
const char *	statusName (bool brief=false) const
virtual bool	operational () const =0
void	attach (SS7L2User *l2user)
SS7L2User *	user () const
int	sls () const
void	sls (int linkSel)
virtual bool	control (Operation oper, NamedList *params=0)
virtual bool	control (NamedList &params)
Protected Member Functions
	SS7Layer2 ()
bool	receivedMSU (const SS7MSU &msu)
void	notify ()

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Detailed Description

Abstract SS7 layer 2 (data link) message transfer part.

An interface to a Layer 2 (data link) SS7 message transfer part

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Member Enumeration Documentation

enum LinkStatus

LSSU Status Indications

enum Operation

Control primitives

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Constructor & Destructor Documentation

SS7Layer2

(

)

[inline, protected]

Constructor

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Member Function Documentation

void attach

(

SS7L2User *

l2user

)

Attach a Layer 2 user component to the data link. Detach from the old one if valid

Parameters:

l2user

Pointer to Layer 2 user component to attach

Referenced by SS7MTP2::destroyed().

virtual bool control

(

NamedList &

params

)

[virtual]

Query or modify layer's settings or operational parameters

Parameters:

params

The list of parameters to query or change

Returns:

True if the control operation was executed

Reimplemented from SignallingComponent.

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 in SS7MTP2.

void notify

(

)

[inline, protected]

Notify out user part about a status change

virtual bool operational

(

)

const [pure virtual]

Check if the link is fully operational

Returns:

True if the link is aligned and operational

Implemented in SS7MTP2.

bool receivedMSU

(

const SS7MSU &

msu

)

[inline, protected]

Push a received Message Signal Unit up the protocol stack

Parameters:

msu

Message data, starting with Service Indicator Octet

Returns:

True if message was successfully delivered to the user component

virtual ObjList* recoverMSU

(

)

[virtual]

Remove the MSUs waiting in the transmit queue and return them

Returns:

List of MSUs taken from the queue

Reimplemented in SS7MTP2.

void sls

(

int

linkSel

)

[inline]

Assign a new Signalling Link Selection number

Parameters:

linkSel

New SLS to assign to this link

int sls

(

)

const [inline]

Get the Signalling Link Selection number allocated to this link

Returns:

SLS value assigned by the upper layer

virtual unsigned int status

(

)

const [virtual]

Retrive the current link status indications

Returns:

Link status indication bits

Reimplemented in SS7MTP2.

const char* statusName

(

bool

brief = false

)

const [inline]

Get the name of the current local Layer 2 status

Parameters:

brief

Request to return the short status name

Returns:

String describing the status

References SS7Layer2::statusName().

Referenced by SS7Layer2::statusName().

virtual const char* statusName	(	unsigned int	status,
		bool	brief
	)			const [virtual]

Get the name of a Layer 2 status

Parameters:

	status	Status indication value
	brief	Request to return the short status name

Returns:

String describing the status

virtual bool transmitMSU

(

const SS7MSU &

msu

)

[pure virtual]

Push a Message Signal Unit down the protocol stack

Parameters:

msu

Message data, starting with Service Indicator Octet

Returns:

True if message was successfully queued

Implemented in SS7MTP2.

SS7L2User* user

(

)

const [inline]

Get the Layer 2 user component that works with this data link

Returns:

Pointer to the user component to which the messages are sent

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

• yatesig.h