amsip session interface
[SIP messages and call control API]

Functions
int	am_session_start (const char *identity, const char *url, const char *proxy, const char *outbound_proxy)
int	am_session_hold (int did, char *wav_file)
int	am_session_off_hold (int did)
int	am_session_mute (int did)
int	am_session_unmute (int did)
int	am_session_add_in_conference (const char *identity, const char *url, const char *proxy, const char *outbound_proxy, const char *conf_name)
int	am_session_turn_into_conference (int did, const char *conf_name)
int	am_session_answer (int tid, int did, int code, int enable_audio)
int	am_session_redirect (int tid, int did, int code, const char *url)
int	am_session_stop (int cid, int did, int code)
int	am_session_refer (int did, const char *url)
int	am_session_get_referto (int did, char *refer_to, size_t refer_to_len)
int	am_session_answer_request (int tid, int did, int code)
int	am_session_send_request (int did, char *method, char *content_type, char *body, int size)
int	am_session_play_file (int did, char *wav_file)
int	am_session_send_rtp_dtmf (int did, char dtmf_number)
int	am_session_send_dtmf (int did, char dtmf_number)
int	am_session_get_dtmf_event (int did, struct am_dtmf_event *dtmf_event)
int	am_session_get_audio_remote (int did, char *remote_info)
int	am_session_get_audio_statistics (int did, struct am_audio_stats *audio_stats)
int	am_session_modify_bitrate (int did, char *preferred_codec, int compress_more)
int	am_session_record (int did, char *recfile)
int	am_session_stop_record (int did)
int	am_session_add_external_rtpdata (int did, MSFilter *external_rtpdata)

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Function Documentation

int am_session_start	(	const char *	identity,
		const char *	url,
		const char *	proxy,
		const char *	outbound_proxy
	)

Configure amsip to start a SIP session.

Parameters:

	identity	Caller SIP identity
	url	Callee SIP identity
	proxy	Set the proxy server
	outbound_proxy	OutBound Proxy

int am_session_hold	(	int	did,
		char *	wav_file
	)

Configure amsip to put on hold a SIP session. (send wav_file)

Parameters:

	did	Session identifier.
	wav_file	Wav file to play.

int am_session_off_hold

(

int

did

)

Configure amsip to put off hold a SIP session.

Parameters:

did

Session identifier.

int am_session_mute

(

int

did

)

Configure amsip to mute a SIP session. (send silence)

Parameters:

did

Session identifier.

int am_session_unmute

(

int

did

)

Configure amsip to unmute a SIP session.

Parameters:

did

Session identifier.

int am_session_add_in_conference	(	const char *	identity,
		const char *	url,
		const char *	proxy,
		const char *	outbound_proxy,
		const char *	conf_name
	)

Configure amsip to start a SIP session and add user in an existing conference.

Parameters:

	identity	Caller SIP identity
	url	Callee SIP identity
	proxy	Set the proxy server
	outbound_proxy	OutBound Proxy
	conf_name	Conference name

int am_session_turn_into_conference	(	int	did,
		const char *	conf_name
	)

Configure amsip to add a session in a conference.

Parameters:

	did	Session identifier.
	conf_name	Conference identifier.

int am_session_answer	(	int	tid,
		int	did,
		int	code,
		int	enable_audio
	)

Configure amsip to establish a SIP session.

Parameters:

	tid	Transaction identifier.
	did	Session identifier.
	code	Code to use.
	enable_audio	enable audio in answer.

int am_session_redirect	(	int	tid,
		int	did,
		int	code,
		const char *	url
	)

Configure amsip to redirect a SIP session.

Parameters:

	tid	Transaction identifier.
	did	Session identifier.
	code	Code to use.
	url	SIP (or other url) address for redirection.

int am_session_stop	(	int	cid,
		int	did,
		int	code
	)

Configure amsip to establish a SIP session.

Parameters:

	cid	dialog identifier.
	did	Session identifier.
	code	Code to use (if answer needed).

int am_session_refer	(	int	did,
		const char *	url
	)

Configure amsip to transfer a SIP session.

Parameters:

	did	Session identifier.
	url	SIP (or other url) address for redirection.

int am_session_get_referto	(	int	did,
		char *	refer_to,
		size_t	refer_to_len
	)

Add Replaces parameter to refer-to url.

Parameters:

	did	Session identifier.
	refer_to	String to carry refer_to.
	refer_to_len	Size of refer_to string.

int am_session_answer_request	(	int	tid,
		int	did,
		int	code
	)

Configure amsip to establish a SIP session.

Parameters:

	tid	Transaction identifier.
	did	Session identifier.
	code	Code to use.

int am_session_send_request	(	int	did,
		char *	method,
		char *	content_type,
		char *	body,
		int	size
	)

Send a request during a session

Parameters:

	did	Session identifier.
	method	SIP method (e.g. INVITE)
	content_type	Content-type of the body
	body	Attached content
	size	Size of body

int am_session_play_file	(	int	did,
		char *	wav_file
	)

Configure amsip to play a file in an outgoing RTP session.

Parameters:

	did	Session identifier.
	wav_file	File to play.

int am_session_send_rtp_dtmf	(	int	did,
		char	dtmf_number
	)

Configure amsip to send a RTP telephone-event in an outgoing RTP session.

Parameters:

	did	Session identifier.
	dtmf_number	DTMF to send.

int am_session_send_dtmf	(	int	did,
		char	dtmf_number
	)

Configure amsip to send an INFO with dtmf attachement.

Parameters:

	did	Session identifier.
	dtmf_number	DTMF to send.

int am_session_get_dtmf_event	(	int	did,
		struct am_dtmf_event *	dtmf_event
	)

Get dtmf from RTP session.

Parameters:

	did	Session identifier.
	dtmf_event	dtmf_event structure.

int am_session_get_audio_remote	(	int	did,
		char *	remote_info
	)

Find out the destination IP/PORT for audio stream. return >0 remote SDP ip/port used return ==0 remote SDP candidate ip/port used (probably for direct comunication) return <0 undefined error.

Parameters:

	did	Session identifier.
	remote_info	string of size 256 to get the remote IP/PORT for audio stream.

int am_session_get_audio_statistics	(	int	did,
		struct am_audio_stats *	audio_stats
	)

Get statistics for RTP audio stream.

Parameters:

	did	Session identifier.
	audio_stats	struct to hold statistics.

int am_session_modify_bitrate	(	int	did,
		char *	preferred_codec,
		int	compress_more
	)

Get statistics for RTP audio stream.

Parameters:

	did	Session identifier.
	preferred_codec	Preferred codec to use.
	compress_more	compress_more. (0 means you want to use more bandwidth)

int am_session_record	(	int	did,
		char *	recfile
	)

Record both audio stream (incoming+outgoing).

Parameters:

	did	Session identifier.
	recfile	File Name for recording.

int am_session_stop_record

(

int

did

)

Stop recording the call.

Parameters:

did

Session identifier.

int am_session_add_external_rtpdata	(	int	did,
		MSFilter *	external_rtpdata
	)

Add new source for sending RTP data.

Parameters:

	did	Session identifier.
	external_rtpdata	External filter.

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