freeswitch/src/mod/endpoints/mod_skinny/skinny_protocol.h

/* 
 * FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 * Copyright (C) 2010, Mathieu Parent <math.parent@gmail.com>
 *
 * Version: MPL 1.1
 *
 * The contents of this file are subject to the Mozilla Public License Version
 * 1.1 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * http://www.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS" basis,
 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
 * for the specific language governing rights and limitations under the
 * License.
 *
 * The Original Code is FreeSWITCH Modular Media Switching Software Library / Soft-Switch Application
 *
 * The Initial Developer of the Original Code is
 * Mathieu Parent <math.parent@gmail.com>
 * Portions created by the Initial Developer are Copyright (C)
 * the Initial Developer. All Rights Reserved.
 *
 * Contributor(s):
 * 
 * Mathieu Parent <math.parent@gmail.com>
 *
 *
 * skinny_protocol.h -- Skinny Call Control Protocol (SCCP) Endpoint Module
 *
 */
#ifndef _MOD_SKINNY_H
/* mod_skinny.h should be loaded first */
#include "mod_skinny.h"
#endif /* _MOD_SKINNY_H */

#ifndef _SKINNY_PROTOCOL_H
#define _SKINNY_PROTOCOL_H

#include <switch.h>

/*****************************************************************************/
/* SKINNY MESSAGE DATA */
/*****************************************************************************/

/* KeepAliveMessage */
#define KEEP_ALIVE_MESSAGE 0x0000

/* RegisterMessage */
#define REGISTER_MESSAGE 0x0001
struct register_message {
    char device_name[16];
    uint32_t user_id;
    uint32_t instance;
    struct in_addr ip;
    uint32_t device_type;
    uint32_t max_streams;
};

/* PortMessage */
#define PORT_MESSAGE 0x0002
struct port_message {
    uint16_t port;
};

/* KeypadButtonMessage */
#define KEYPAD_BUTTON_MESSAGE 0x0003
struct keypad_button_message {
    uint32_t button;
    uint32_t line_instance;
    uint32_t call_id;
};

/* StimulusMessage */
#define STIMULUS_MESSAGE 0x0005
struct stimulus_message {
    uint32_t instance_type; /* See enum skinny_button_definition */
    uint32_t instance;
    uint32_t call_id;
};

/* OffHookMessage */
#define OFF_HOOK_MESSAGE 0x0006
struct off_hook_message {
    uint32_t line_instance;
    uint32_t call_id;
};

/* OnHookMessage */
#define ON_HOOK_MESSAGE 0x0007
struct on_hook_message {
    uint32_t line_instance;
    uint32_t call_id;
};

/* SpeedDialStatReqMessage */
#define SPEED_DIAL_STAT_REQ_MESSAGE 0x000A
struct speed_dial_stat_req_message {
    uint32_t number;
};

/* LineStatReqMessage */
#define LINE_STAT_REQ_MESSAGE 0x000B
struct line_stat_req_message {
    uint32_t number;
};

/* ConfigStatReqMessage */
#define CONFIG_STAT_REQ_MESSAGE 0x000C

/* TimeDateReqMessage */
#define TIME_DATE_REQ_MESSAGE 0x000D

/* ButtonTemplateReqMessage */
#define BUTTON_TEMPLATE_REQ_MESSAGE 0x000E

/* VersionReqMessage */
#define VERSION_REQ_MESSAGE 0x000F

/* CapabilitiesResMessage */
#define CAPABILITIES_RES_MESSAGE 0x0010
struct station_capabilities {
    uint32_t codec;
    uint16_t frames;
    char reserved[10];
};

struct capabilities_res_message {
    uint32_t count;
    struct station_capabilities caps[SWITCH_MAX_CODECS];
};

/* AlarmMessage */
#define ALARM_MESSAGE 0x0020
struct alarm_message {
    uint32_t alarm_severity;
    char display_message[80];
    uint32_t alarm_param1;
    uint32_t alarm_param2;
};

/* OpenReceiveChannelAck */
#define OPEN_RECEIVE_CHANNEL_ACK_MESSAGE 0x0022
struct open_receive_channel_ack_message {
    uint32_t status;
    struct in_addr ip;
    uint32_t port;
    uint32_t pass_thru_party_id;
};

/* SoftKeySetReqMessage */
#define SOFT_KEY_SET_REQ_MESSAGE 0x0025

/* SoftKeyEventMessage */
#define SOFT_KEY_EVENT_MESSAGE 0x0026
struct soft_key_event_message {
    uint32_t event;
    uint32_t line_instance;
    uint32_t call_id;
};

/* UnregisterMessage */
#define UNREGISTER_MESSAGE 0x0027

/* SoftKeyTemplateReqMessage */
#define SOFT_KEY_TEMPLATE_REQ_MESSAGE 0x0028

/* HeadsetStatusMessage */
#define HEADSET_STATUS_MESSAGE 0x002B
struct headset_status_message {
    uint32_t mode;
};

/* RegisterAvailableLinesMessage */
#define REGISTER_AVAILABLE_LINES_MESSAGE 0x002D
struct register_available_lines_message {
    uint32_t count;
};

/* ServiceUrlStatReqMessage */
#define SERVICE_URL_STAT_REQ_MESSAGE 0x0033
struct service_url_stat_req_message {
    uint32_t service_url_index;
};

/* FeatureStatReqMessage */
#define FEATURE_STAT_REQ_MESSAGE 0x0034
struct feature_stat_req_message {
    uint32_t feature_index;
};

/* RegisterAckMessage */
#define REGISTER_ACK_MESSAGE 0x0081
struct register_ack_message {
    uint32_t keep_alive;
    char date_format[6];
    char reserved[2];
    uint32_t secondary_keep_alive;
    char reserved2[4];
};

/* StartToneMessage */
#define START_TONE_MESSAGE 0x0082
struct start_tone_message {
    uint32_t tone; /* see enum skinny_tone */
    uint32_t reserved;
    uint32_t line_instance;
    uint32_t call_id;
};

/* StopToneMessage */
#define STOP_TONE_MESSAGE 0x0083
struct stop_tone_message {
    uint32_t line_instance;
    uint32_t call_id;
};

/* SetRingerMessage */
#define SET_RINGER_MESSAGE 0x0085
struct set_ringer_message {
    uint32_t ring_type; /* See enum skinny_ring_type */
    uint32_t ring_mode; /* See enum skinny_ring_mode */
    uint32_t line_instance;
    uint32_t call_id;
};

/* SetLampMessage */
#define SET_LAMP_MESSAGE 0x0086
struct set_lamp_message {
    uint32_t stimulus; /* See enum skinny_button_definition */
    uint32_t stimulus_instance;
    uint32_t mode; /* See enum skinny_lamp_mode */
};

/* SetSpeakerModeMessage */
#define SET_SPEAKER_MODE_MESSAGE 0x0088
struct set_speaker_mode_message {
    uint32_t mode; /* See enum skinny_speaker_mode */
};

/* StartMediaTransmissionMessage */
#define START_MEDIA_TRANSMISSION_MESSAGE 0x008A
struct start_media_transmission_message {
    uint32_t conference_id;
    uint32_t pass_thru_party_id;
    uint32_t remote_ip;
    uint32_t remote_port;
    uint32_t ms_per_packet;
    uint32_t payload_capacity;
    uint32_t precedence;
    uint32_t silence_suppression;
    uint16_t max_frames_per_packet;
    uint32_t g723_bitrate;
    /* ... */
};

/* StopMediaTransmissionMessage */
#define STOP_MEDIA_TRANSMISSION_MESSAGE 0x008B
struct stop_media_transmission_message {
    uint32_t conference_id;
    uint32_t pass_thru_party_id;
    uint32_t conference_id2;
    /* ... */
};

/* CallInfoMessage */
#define CALL_INFO_MESSAGE 0x008F
struct call_info_message {
    char calling_party_name[40];
    char calling_party[24];
    char called_party_name[40];
    char called_party[24];
    uint32_t line_instance;
    uint32_t call_id;
    uint32_t call_type; /* See enum skinny_call_type */
    char original_called_party_name[40];
    char original_called_party[24];
    char last_redirecting_party_name[40];
    char last_redirecting_party[24];
    uint32_t original_called_party_redirect_reason;
    uint32_t last_redirecting_reason;
    char calling_party_voice_mailbox[24];
    char called_party_voice_mailbox[24];
    char original_called_party_voice_mailbox[24];
    char last_redirecting_voice_mailbox[24];
    uint32_t call_instance;
    uint32_t call_security_status;
    uint32_t party_pi_restriction_bits;
};

/* SpeedDialStatMessage */
#define SPEED_DIAL_STAT_RES_MESSAGE 0x0091
struct speed_dial_stat_res_message {
    uint32_t number;
    char line[24];
    char label[40];
};

/* LineStatMessage */
#define LINE_STAT_RES_MESSAGE 0x0092
struct line_stat_res_message {
    uint32_t number;
    char name[24];
    char shortname[40];
    char displayname[44];
};

/* ConfigStatMessage */
#define CONFIG_STAT_RES_MESSAGE 0x0093
struct config_stat_res_message {
    char device_name[16];
    uint32_t user_id;
    uint32_t instance;
    char user_name[40];
    char server_name[40];
    uint32_t number_lines;
    uint32_t number_speed_dials;
};

/* DefineTimeDate */
#define DEFINE_TIME_DATE_MESSAGE 0x0094
struct define_time_date_message {
    uint32_t year;
    uint32_t month;
    uint32_t day_of_week; /* monday = 1 */
    uint32_t day;
    uint32_t hour;
    uint32_t minute;
    uint32_t seconds;
    uint32_t milliseconds;
    uint32_t timestamp;
};

/* ButtonTemplateMessage */
#define BUTTON_TEMPLATE_RES_MESSAGE 0x0097
struct button_definition {
    uint8_t instance_number;
    uint8_t button_definition; /* See enum skinny_button_definition */
};

#define SKINNY_MAX_BUTTON_COUNT 42
struct button_template_message {
    uint32_t button_offset;
    uint32_t button_count;
    uint32_t total_button_count;
    struct button_definition btn[SKINNY_MAX_BUTTON_COUNT];
};

/* VersionMessage */
#define VERSION_MESSAGE 0x0098
struct version_message {
    char version[16];
};

/* CapabilitiesReqMessage */
#define CAPABILITIES_REQ_MESSAGE 0x009B

/* RegisterRejectMessage */
#define REGISTER_REJECT_MESSAGE 0x009D
struct register_reject_message {
    char error[33];
};

/* ResetMessage */
#define RESET_MESSAGE 0x009F
struct reset_message {
    uint32_t reset_type; /* See enum skinny_device_reset_types */
};

/* KeepAliveAckMessage */
#define KEEP_ALIVE_ACK_MESSAGE 0x0100

/* OpenReceiveChannelMessage */
#define OPEN_RECEIVE_CHANNEL_MESSAGE 0x0105
struct open_receive_channel_message {
    uint32_t conference_id;
    uint32_t pass_thru_party_id;
    uint32_t packets;
    uint32_t payload_capacity;
    uint32_t echo_cancel_type;
    uint32_t g723_bitrate;
    uint32_t conference_id2;
    uint32_t reserved[10];
};

/* CloseReceiveChannelMessage */
#define CLOSE_RECEIVE_CHANNEL_MESSAGE 0x0106
struct close_receive_channel_message {
    uint32_t conference_id;
    uint32_t pass_thru_party_id;
    uint32_t conference_id2;
};

/* SoftKeyTemplateResMessage */
#define SOFT_KEY_TEMPLATE_RES_MESSAGE 0x0108

struct soft_key_template_definition {
    char soft_key_label[16];
    uint32_t soft_key_event;
};

struct soft_key_template_res_message {
    uint32_t soft_key_offset;
    uint32_t soft_key_count;
    uint32_t total_soft_key_count;
    struct soft_key_template_definition soft_key[32];
};

/* SoftKeySetResMessage */
#define SOFT_KEY_SET_RES_MESSAGE 0x0109
struct soft_key_set_definition {
    uint8_t soft_key_template_index[16]; /* See enum skinny_soft_key_event */
    uint16_t soft_key_info_index[16];
};

struct soft_key_set_res_message {
    uint32_t soft_key_set_offset;
    uint32_t soft_key_set_count;
    uint32_t total_soft_key_set_count;
    struct soft_key_set_definition soft_key_set[16];
    uint32_t res;
};

/* SelectSoftKeysMessage */
#define SELECT_SOFT_KEYS_MESSAGE 0x0110
struct select_soft_keys_message {
    uint32_t line_instance;
    uint32_t call_id;
    uint32_t soft_key_set; /* See enum skinny_key_set */
    uint32_t valid_key_mask;
};

/* CallStateMessage */
#define CALL_STATE_MESSAGE 0x0111
struct call_state_message {
    uint32_t call_state; /* See enum skinny_call_state */
    uint32_t line_instance;
    uint32_t call_id;
};

/* DisplayPromptStatusMessage */
#define DISPLAY_PROMPT_STATUS_MESSAGE 0x0112
struct display_prompt_status_message {
    uint32_t timeout;
    char display[32];
    uint32_t line_instance;
    uint32_t call_id;
};

/* ClearPromptStatusMessage */
#define CLEAR_PROMPT_STATUS_MESSAGE  0x0113
struct clear_prompt_status_message {
    uint32_t line_instance;
    uint32_t call_id;
};

/* ActivateCallPlaneMessage */
#define ACTIVATE_CALL_PLANE_MESSAGE 0x0116
struct activate_call_plane_message {
    uint32_t line_instance;
};

/* UnregisterAckMessage */
#define UNREGISTER_ACK_MESSAGE 0x0118
struct unregister_ack_message {
    uint32_t unregister_status;
};

/* BackSpaceReqMessage */
#define BACK_SPACE_REQ_MESSAGE 0x0119
struct back_space_req_message {
    uint32_t line_instance;
    uint32_t call_id;
};

/* DialedNumberMessage */
#define DIALED_NUMBER_MESSAGE 0x011D
struct dialed_number_message {
    char called_party[24];
    uint32_t line_instance;
    uint32_t call_id;
};

/* FeatureStatMessage */
#define FEATURE_STAT_RES_MESSAGE 0x011F
struct feature_stat_res_message {
    uint32_t index;
    uint32_t id;
    char text_label[40];
    uint32_t status;
};

/* DisplayPriNotifyMessage */
#define DISPLAY_PRI_NOTIFY_MESSAGE 0x0120
struct display_pri_notify_message {
    uint32_t message_timeout;
    uint32_t priority;
    char notify[32];
};

/* ServiceUrlStatMessage */
#define SERVICE_URL_STAT_RES_MESSAGE 0x012F
struct service_url_stat_res_message {
    uint32_t index;
    char url[256];
    char display_name[40];
};

/*****************************************************************************/
/* SKINNY MESSAGE */
/*****************************************************************************/
#define SKINNY_MESSAGE_FIELD_SIZE 4 /* 4-bytes field */
#define SKINNY_MESSAGE_HEADERSIZE 12 /* three 4-bytes fields */
#define SKINNY_MESSAGE_MAXSIZE 1000

union skinny_data {
    struct register_message reg;
    struct port_message port;
    struct keypad_button_message keypad_button;
    struct stimulus_message stimulus;
    struct off_hook_message off_hook;
    struct on_hook_message on_hook;
    struct speed_dial_stat_req_message speed_dial_req;
    struct line_stat_req_message line_req;
    struct capabilities_res_message cap_res;
    struct alarm_message alarm;
    struct open_receive_channel_ack_message open_receive_channel_ack;
    struct soft_key_event_message soft_key_event;
    struct service_url_stat_req_message service_url_req;
    struct feature_stat_req_message feature_req;
    struct headset_status_message headset_status;
    struct register_available_lines_message reg_lines;
    struct register_ack_message reg_ack;
    struct start_tone_message start_tone;
    struct stop_tone_message stop_tone;
    struct set_ringer_message ringer;
    struct set_lamp_message lamp;
    struct set_speaker_mode_message speaker_mode;
    struct start_media_transmission_message start_media;
    struct stop_media_transmission_message stop_media;
    struct call_info_message call_info;
    struct speed_dial_stat_res_message speed_dial_res;
    struct line_stat_res_message line_res;
    struct config_stat_res_message config_res;
    struct define_time_date_message define_time_date;
    struct button_template_message button_template;
    struct version_message version;
    struct register_reject_message reg_rej;
    struct reset_message reset;
    struct open_receive_channel_message open_receive_channel;
    struct close_receive_channel_message close_receive_channel;
    struct soft_key_template_res_message soft_key_template;
    struct soft_key_set_res_message soft_key_set;
    struct select_soft_keys_message select_soft_keys;
    struct call_state_message call_state;
    struct display_prompt_status_message display_prompt_status;
    struct clear_prompt_status_message clear_prompt_status;
    struct activate_call_plane_message activate_call_plane;
    struct unregister_ack_message unregister_ack;
    struct back_space_req_message back_space_req;
    struct dialed_number_message dialed_number;
    struct feature_stat_res_message feature_res;
    struct display_pri_notify_message display_pri_notify;
    struct service_url_stat_res_message service_url_res;

    uint16_t as_uint16;
    char as_char;
    void *raw;
};

/*
 * header is length+reserved
 * body is type+data
 * length is length of body
 */
struct skinny_message {
    uint32_t length;
    uint32_t version;
    uint32_t type;
    union skinny_data data;
};
typedef struct skinny_message skinny_message_t;

/*****************************************************************************/
/* SKINNY TYPES */
/*****************************************************************************/
enum skinny_codecs {
    SKINNY_CODEC_ALAW_64K = 2,
    SKINNY_CODEC_ALAW_56K = 3,
    SKINNY_CODEC_ULAW_64K = 4,
    SKINNY_CODEC_ULAW_56K = 5,
    SKINNY_CODEC_G722_64K = 6,
    SKINNY_CODEC_G722_56K = 7,
    SKINNY_CODEC_G722_48K = 8,
    SKINNY_CODEC_G723_1 = 9,
    SKINNY_CODEC_G728 = 10,
    SKINNY_CODEC_G729 = 11,
    SKINNY_CODEC_G729A = 12,
    SKINNY_CODEC_IS11172 = 13,
    SKINNY_CODEC_IS13818 = 14,
    SKINNY_CODEC_G729B = 15,
    SKINNY_CODEC_G729AB = 16,
    SKINNY_CODEC_GSM_FULL = 18,
    SKINNY_CODEC_GSM_HALF = 19,
    SKINNY_CODEC_GSM_EFULL = 20,
    SKINNY_CODEC_WIDEBAND_256K = 25,
    SKINNY_CODEC_DATA_64K = 32,
    SKINNY_CODEC_DATA_56K = 33,
    SKINNY_CODEC_GSM = 80,
    SKINNY_CODEC_ACTIVEVOICE = 81,
    SKINNY_CODEC_G726_32K = 82,
    SKINNY_CODEC_G726_24K = 83,
    SKINNY_CODEC_G726_16K = 84,
    SKINNY_CODEC_G729B_BIS = 85,
    SKINNY_CODEC_G729B_LOW = 86,
    SKINNY_CODEC_H261 = 100,
    SKINNY_CODEC_H263 = 101,
    SKINNY_CODEC_VIDEO = 102,
    SKINNY_CODEC_T120 = 105,
    SKINNY_CODEC_H224 = 106,
    SKINNY_CODEC_RFC2833_DYNPAYLOAD = 257
};

char* skinny_codec2string(enum skinny_codecs skinnycodec);

/*****************************************************************************/
/* SKINNY FUNCTIONS */
/*****************************************************************************/
#define skinny_check_data_length(message, len) \
    if (message->length < len+4) {\
		switch_log_printf(SWITCH_CHANNEL_LOG, SWITCH_LOG_ERROR,\
			"Received Too Short Skinny Message %s (type=%x,length=%d), expected %" SWITCH_SIZE_T_FMT ".\n",\
			skinny_message_type2str(request->type), request->type, request->length,\
	    	len+4);\
	    return SWITCH_STATUS_FALSE;\
    }
#define skinny_check_data_length_soft(message, len) \
    (message->length >= len+4)

switch_status_t skinny_read_packet(listener_t *listener, skinny_message_t **req);

switch_status_t skinny_device_event(listener_t *listener, switch_event_t **ev, switch_event_types_t event_id, const char *subclass_name);

switch_status_t skinny_session_walk_lines(skinny_profile_t *profile, char *channel_uuid, switch_core_db_callback_func_t callback, void *data);

void skinny_line_get(listener_t *listener, uint32_t instance, struct line_stat_res_message **button);
void skinny_speed_dial_get(listener_t *listener, uint32_t instance, struct speed_dial_stat_res_message **button);
void skinny_service_url_get(listener_t *listener, uint32_t instance, struct service_url_stat_res_message **button);
void skinny_feature_get(listener_t *listener, uint32_t instance, struct feature_stat_res_message **button);

switch_status_t skinny_perform_send_reply(listener_t *listener, const char *file, const char *func, int line, skinny_message_t *reply);
#define  skinny_send_reply(listener, reply)  skinny_perform_send_reply(listener, __FILE__, __SWITCH_FUNC__, __LINE__, reply)

switch_status_t skinny_handle_request(listener_t *listener, skinny_message_t *request);

/*****************************************************************************/
/* SKINNY MESSAGE HELPER */
/*****************************************************************************/
switch_status_t send_register_ack(listener_t *listener,
    uint32_t keep_alive,
    char *date_format,
    char *reserved,
    uint32_t secondary_keep_alive,
    char *reserved2);
switch_status_t send_start_tone(listener_t *listener,
    uint32_t tone,
    uint32_t reserved,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_stop_tone(listener_t *listener,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_set_ringer(listener_t *listener,
    uint32_t ring_type,
    uint32_t ring_mode,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_set_lamp(listener_t *listener,
    uint32_t stimulus,
    uint32_t stimulus_instance,
    uint32_t mode);
switch_status_t send_set_speaker_mode(listener_t *listener,
    uint32_t mode);
switch_status_t send_start_media_transmission(listener_t *listener,
    uint32_t conference_id,
    uint32_t pass_thru_party_id,
    uint32_t remote_ip,
    uint32_t remote_port,
    uint32_t ms_per_packet,
    uint32_t payload_capacity,
    uint32_t precedence,
    uint32_t silence_suppression,
    uint16_t max_frames_per_packet,
    uint32_t g723_bitrate);
switch_status_t send_stop_media_transmission(listener_t *listener,
    uint32_t conference_id,
    uint32_t pass_thru_party_id,
    uint32_t conference_id2);
switch_status_t skinny_send_call_info(listener_t *listener,
        const char *calling_party_name,
        const char *calling_party,
        const char *called_party_name,
        const char *called_party,
        uint32_t line_instance,
        uint32_t call_id,
        uint32_t call_type,
        const char *original_called_party_name,
        const char *original_called_party,
        const char *last_redirecting_party_name,
        const char *last_redirecting_party,
        uint32_t original_called_party_redirect_reason,
        uint32_t last_redirecting_reason,
        const char *calling_party_voice_mailbox,
        const char *called_party_voice_mailbox,
        const char *original_called_party_voice_mailbox,
        const char *last_redirecting_voice_mailbox,
        uint32_t call_instance,
        uint32_t call_security_status,
        uint32_t party_pi_restriction_bits);
switch_status_t send_define_time_date(listener_t *listener,
	uint32_t year,
	uint32_t month,
	uint32_t day_of_week, /* monday = 1 */
	uint32_t day,
	uint32_t hour,
	uint32_t minute,
	uint32_t seconds,
	uint32_t milliseconds,
	uint32_t timestamp);
switch_status_t send_define_current_time_date(listener_t *listener);
switch_status_t send_version(listener_t *listener,
    char *version);
switch_status_t send_capabilities_req(listener_t *listener);
switch_status_t send_register_reject(listener_t *listener,
    char *error);
switch_status_t send_open_receive_channel(listener_t *listener,
    uint32_t conference_id,
    uint32_t pass_thru_party_id,
    uint32_t packets,
    uint32_t payload_capacity,
    uint32_t echo_cancel_type,
    uint32_t g723_bitrate,
    uint32_t conference_id2,
    uint32_t reserved[10]);
switch_status_t send_close_receive_channel(listener_t *listener,
    uint32_t conference_id,
    uint32_t pass_thru_party_id,
    uint32_t conference_id2);
switch_status_t send_select_soft_keys(listener_t *listener,
    uint32_t line_instance,
    uint32_t call_id,
    uint32_t soft_key_set,
    uint32_t valid_key_mask);
switch_status_t send_call_state(listener_t *listener,
    uint32_t call_state,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_display_prompt_status(listener_t *listener,
    uint32_t timeout,
    const char *display,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_clear_prompt_status(listener_t *listener,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_activate_call_plane(listener_t *listener,
    uint32_t line_instance);
switch_status_t send_back_space_request(listener_t *listener,
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_dialed_number(listener_t *listener,
    char called_party[24],
    uint32_t line_instance,
    uint32_t call_id);
switch_status_t send_display_pri_notify(listener_t *listener,
    uint32_t message_timeout,
    uint32_t priority,
    char *notify);
switch_status_t send_reset(listener_t *listener,
    uint32_t reset_type);

#endif /* _SKINNY_PROTOCOL_H */

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