H323_T120Channel Class Reference

#include <h323t120.h>

Inheritance diagram for H323_T120Channel:

List of all members.

Public Member Functions
virtual void	HandleChannel ()
Construction
	H323_T120Channel (H323Connection &connection, const H323Capability &capability, Directions direction, unsigned sessionID)
Overrides from class H323Channel
virtual void	Receive ()
virtual void	Transmit ()
virtual BOOL	OnSendingPDU (H245_OpenLogicalChannel &openPDU) const
virtual void	OnSendOpenAck (const H245_OpenLogicalChannel &open, H245_OpenLogicalChannelAck &ack) const
virtual BOOL	OnReceivedPDU (const H245_OpenLogicalChannel &pdu, unsigned &errorCode)
virtual BOOL	OnReceivedAckPDU (const H245_OpenLogicalChannelAck &pdu)
Protected Attributes
OpalT120Protocol *	t120handler

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Detailed Description

This class describes the T.120 logical channel.

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Constructor & Destructor Documentation

H323_T120Channel::H323_T120Channel (  H323Connection &  connection, const H323Capability &  capability, Directions  direction, unsigned  sessionID )

Create a new channel. Parameters: connection  Connection to endpoint for channel capability  Capability channel is using direction  Direction of channel sessionID  Session ID for channel

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Member Function Documentation

virtual void H323_T120Channel::HandleChannel (   )  [virtual]

virtual BOOL H323_T120Channel::OnReceivedAckPDU (  const H245_OpenLogicalChannelAck &  pdu  )  [virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint. The default makes sure the parameters are compatible and passes on the PDU to the rtp session. Parameters: pdu  Acknowledgement PDU Reimplemented from H323DataChannel.

virtual BOOL H323_T120Channel::OnReceivedPDU (  const H245_OpenLogicalChannel &  pdu, unsigned &  errorCode )  [virtual]

This is called after a request to create a channel occurs from the local machine via the H245LogicalChannelDict::Open() function, and the request has been acknowledged by the remote endpoint. The default makes sure the parameters are compatible and passes on the PDU to the rtp session. Parameters: pdu  Open PDU errorCode  Error code on failure Reimplemented from H323DataChannel.

virtual BOOL H323_T120Channel::OnSendingPDU (  H245_OpenLogicalChannel &  openPDU  )  const [virtual]

Fill out the OpenLogicalChannel PDU for the particular channel type. Parameters: openPDU  Open PDU to send. Reimplemented from H323DataChannel.

virtual void H323_T120Channel::OnSendOpenAck (  const H245_OpenLogicalChannel &  open, H245_OpenLogicalChannelAck &  ack )  const [virtual]

This is called when request to create a channel is received from a remote machine and is about to be acknowledged. Parameters: open  Open PDU ack  Acknowledgement PDU Reimplemented from H323DataChannel.

virtual void H323_T120Channel::Receive (   )  [virtual]

Handle channel data reception. This is called by the thread started by the Start() function and is typically a loop reading from the transport and handling PDU's. The default behaviour here is to call HandleChannel()

virtual void H323_T120Channel::Transmit (   )  [virtual]

Handle channel data transmission. This is called by the thread started by the Start() function and is typically a loop reading from the codec and writing to the transport (eg an RTP_session). The default behaviour here is to call HandleChannel()

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Member Data Documentation

OpalT120Protocol* H323_T120Channel::t120handler [protected]

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

• h323t120.h

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