isdn_lib.h

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/*
 * Chan_Misdn -- Channel Driver for Asterisk
 *
 * Interface to mISDN
 *
 * Copyright (C) 2004, Christian Richter
 *
 * Christian Richter <[email protected]>
 *
 * This program is free software, distributed under the terms of
 * the GNU General Public License
 */

/*! \file
 * \brief Interface to mISDN
 *
 * \author Christian Richter <[email protected]>
 */

#ifndef TE_LIB
#define TE_LIB

#include <mISDNuser/suppserv.h>

/** For initialization usage **/
/* typedef int ie_nothing_t ;*/
/** end of init usage **/


/*
 * uncomment the following to make chan_misdn create
 * record files in /tmp/misdn-{rx|tx}-PortChannel format
 * */

/*#define MISDN_SAVE_DATA*/

#ifdef WITH_BEROEC
typedef int beroec_t;


enum beroec_type {
 BEROEC_FULLBAND=0,
 BEROEC_SUBBAND,
 BEROEC_FASTSUBBAND
};

void beroec_init(void);
void beroec_exit(void);
beroec_t *beroec_new(int tail, enum beroec_type type, int anti_howl,
 int tonedisable, int zerocoeff, int adapt, int nlp);

void beroec_destroy(beroec_t *ec);
int beroec_cancel_alaw_chunk(beroec_t *ec,
 char *send,
 char *receive,
 int len);

int beroec_version(void);
#endif



enum tone_e {
 TONE_NONE=0,
 TONE_DIAL,
 TONE_ALERTING,
 TONE_FAR_ALERTING,
 TONE_BUSY,
 TONE_HANGUP,
 TONE_CUSTOM,
 TONE_FILE
};



#define MAX_BCHANS 31

enum bchannel_state {
 BCHAN_CLEANED=0,
 BCHAN_EMPTY,
 BCHAN_ACTIVATED,
 BCHAN_BRIDGED,
 BCHAN_RELEASE,
 BCHAN_ERROR
};


enum misdn_err_e {
 ENOCHAN=1
};

enum mISDN_NUMBER_PLAN {
 NUMPLAN_UNKNOWN = 0x0,
 NUMPLAN_ISDN = 0x1, /* ISDN/Telephony numbering plan E.164 */
 NUMPLAN_DATA = 0x3, /* Data numbering plan X.121 */
 NUMPLAN_TELEX = 0x4, /* Telex numbering plan F.69 */
 NUMPLAN_NATIONAL = 0x8,
 NUMPLAN_PRIVATE = 0x9
};

enum mISDN_NUMBER_TYPE {
 NUMTYPE_UNKNOWN = 0x0,
 NUMTYPE_INTERNATIONAL = 0x1,
 NUMTYPE_NATIONAL = 0x2,
 NUMTYPE_NETWORK_SPECIFIC = 0x3,
 NUMTYPE_SUBSCRIBER = 0x4,
 NUMTYPE_ABBREVIATED = 0x5
};

enum event_response_e {
 RESPONSE_IGNORE_SETUP_WITHOUT_CLOSE,
 RESPONSE_IGNORE_SETUP,
 RESPONSE_RELEASE_SETUP,
 RESPONSE_ERR,
 RESPONSE_OK
};


enum event_e {
 EVENT_NOTHING,
 EVENT_TONE_GENERATE,
 EVENT_BCHAN_DATA,
 EVENT_BCHAN_ACTIVATED,
 EVENT_BCHAN_ERROR,
 EVENT_CLEANUP,
 EVENT_PROCEEDING,
 EVENT_PROGRESS,
 EVENT_SETUP,
 EVENT_REGISTER,
 EVENT_ALERTING,
 EVENT_CONNECT,
 EVENT_SETUP_ACKNOWLEDGE,
 EVENT_CONNECT_ACKNOWLEDGE ,
 EVENT_USER_INFORMATION,
 EVENT_SUSPEND_REJECT,
 EVENT_RESUME_REJECT,
 EVENT_HOLD,
 EVENT_SUSPEND,
 EVENT_RESUME,
 EVENT_HOLD_ACKNOWLEDGE,
 EVENT_SUSPEND_ACKNOWLEDGE,
 EVENT_RESUME_ACKNOWLEDGE,
 EVENT_HOLD_REJECT,
 EVENT_RETRIEVE,
 EVENT_RETRIEVE_ACKNOWLEDGE,
 EVENT_RETRIEVE_REJECT,
 EVENT_DISCONNECT,
 EVENT_RESTART,
 EVENT_RELEASE,
 EVENT_RELEASE_COMPLETE,
 EVENT_FACILITY,
 EVENT_NOTIFY,
 EVENT_STATUS_ENQUIRY,
 EVENT_INFORMATION,
 EVENT_STATUS,
 EVENT_TIMEOUT,
 EVENT_DTMF_TONE,
 EVENT_NEW_L3ID,
 EVENT_NEW_BC,
 EVENT_PORT_ALARM,
 EVENT_NEW_CHANNEL,
 EVENT_UNKNOWN
};


enum ie_name_e {
 IE_DUMMY,
 IE_LAST
};

enum { /* bearer capability */
 INFO_CAPABILITY_SPEECH=0,
 INFO_CAPABILITY_AUDIO_3_1K=0x10 ,
 INFO_CAPABILITY_AUDIO_7K=0x11 ,
 INFO_CAPABILITY_VIDEO =0x18,
 INFO_CAPABILITY_DIGITAL_UNRESTRICTED =0x8,
 INFO_CAPABILITY_DIGITAL_RESTRICTED =0x09,
 INFO_CAPABILITY_DIGITAL_UNRESTRICTED_TONES
};

enum { /* progress indicators */
 INFO_PI_CALL_NOT_E2E_ISDN =0x01,
 INFO_PI_CALLED_NOT_ISDN =0x02,
 INFO_PI_CALLER_NOT_ISDN =0x03,
 INFO_PI_CALLER_RETURNED_TO_ISDN =0x04,
 INFO_PI_INBAND_AVAILABLE =0x08,
 INFO_PI_DELAY_AT_INTERF =0x0a,
 INFO_PI_INTERWORKING_WITH_PUBLIC =0x10,
 INFO_PI_INTERWORKING_NO_RELEASE =0x11,
 INFO_PI_INTERWORKING_NO_RELEASE_PRE_ANSWER =0x12,
 INFO_PI_INTERWORKING_NO_RELEASE_POST_ANSWER =0x13
};

/*!
 * \brief Q.931 encoded redirecting reason
 */
enum mISDN_REDIRECTING_REASON {
 mISDN_REDIRECTING_REASON_UNKNOWN = 0x0,
 /*! Call forwarding busy or called DTE busy */
 mISDN_REDIRECTING_REASON_CALL_FWD_BUSY = 0x1,
 /*! Call forwarding no reply */
 mISDN_REDIRECTING_REASON_NO_REPLY = 0x2,
 /*! Call deflection */
 mISDN_REDIRECTING_REASON_DEFLECTION = 0x4,
 /*! Called DTE out of order */
 mISDN_REDIRECTING_REASON_OUT_OF_ORDER = 0x9,
 /*! Call forwarding by the called DTE */
 mISDN_REDIRECTING_REASON_CALL_FWD_DTE = 0xA,
 /*! Call forwarding unconditional or systematic call redirection */
 mISDN_REDIRECTING_REASON_CALL_FWD = 0xF
};

/*!
 * \brief Notification description code enumeration
 */
enum mISDN_NOTIFY_CODE {
 mISDN_NOTIFY_CODE_INVALID = -1,
 /*! Call is placed on hold (Q.931) */
 mISDN_NOTIFY_CODE_USER_SUSPEND = 0x00,
 /*! Call is taken off of hold (Q.931) */
 mISDN_NOTIFY_CODE_USER_RESUME = 0x01,
 /*! Call is diverting (EN 300 207-1 Section 7.2.1) */
 mISDN_NOTIFY_CODE_CALL_IS_DIVERTING = 0x7B,
 /*! Call diversion is enabled (cfu, cfb, cfnr) (EN 300 207-1 Section 7.2.1) */
 mISDN_NOTIFY_CODE_DIVERSION_ACTIVATED = 0x68,
 /*! Call transfer, alerting (EN 300 369-1 Section 7.2) */
 mISDN_NOTIFY_CODE_CALL_TRANSFER_ALERTING = 0x69,
 /*! Call transfer, active(answered) (EN 300 369-1 Section 7.2) */
 mISDN_NOTIFY_CODE_CALL_TRANSFER_ACTIVE = 0x6A,
};

enum { /*CODECS*/
 INFO_CODEC_ULAW=2,
 INFO_CODEC_ALAW=3
};


enum layer_e {
 L3,
 L2,
 L1,
 UNKNOWN
};

/*! Maximum phone number (address) length plus null terminator */
#define MISDN_MAX_NUMBER_LEN (31 + 1)

/*! Maximum name length plus null terminator (From ECMA-164) */
#define MISDN_MAX_NAME_LEN (50 + 1)

/*! Maximum subaddress length plus null terminator */
#define MISDN_MAX_SUBADDRESS_LEN (23 + 1)

/*! Maximum keypad facility content length plus null terminator */
#define MISDN_MAX_KEYPAD_LEN (31 + 1)

/*! \brief Dialed/Called information struct */
struct misdn_party_dialing {
 /*! \brief Type-of-number in ISDN terms for the dialed/called number */
 enum mISDN_NUMBER_TYPE number_type;

 /*! \brief Type-of-number numbering plan. */
 enum mISDN_NUMBER_PLAN number_plan;

 /*! \brief Dialed/Called Phone Number (Address) */
 char number[MISDN_MAX_NUMBER_LEN];

 /*! \brief Dialed/Called Subaddress number */
 char subaddress[MISDN_MAX_SUBADDRESS_LEN];
};

/*! \brief Connected-Line/Calling/Redirecting ID info struct */
struct misdn_party_id {
 /*! \brief Number presentation restriction code
 * 0=Allowed, 1=Restricted, 2=Unavailable
 */
 int presentation;

 /*! \brief Number screening code
 * 0=Unscreened, 1=Passed Screen, 2=Failed Screen, 3=Network Number
 */
 int screening;

 /*! \brief Type-of-number in ISDN terms for the number */
 enum mISDN_NUMBER_TYPE number_type;

 /*! \brief Type-of-number numbering plan. */
 enum mISDN_NUMBER_PLAN number_plan;

 /*! \brief Subscriber Name
 * \note The name is currently obtained from Asterisk for
 * potential use in display ie's since basic ISDN does
 * not support names directly.
 */
 char name[MISDN_MAX_NAME_LEN];

 /*! \brief Phone number (Address) */
 char number[MISDN_MAX_NUMBER_LEN];

 /*! \brief Subaddress number */
 char subaddress[MISDN_MAX_SUBADDRESS_LEN];
};

/*! \brief Redirecting information struct */
struct misdn_party_redirecting {
 /*! \brief Who is redirecting the call (Sent to the party the call is redirected toward) */
 struct misdn_party_id from;

 /*! \brief Where the call is being redirected toward (Sent to the calling party) */
 struct misdn_party_id to;

 /*! \brief Reason a call is being redirected (Q.931 field value) */
 enum mISDN_REDIRECTING_REASON reason;

 /*! \brief Number of times the call has been redirected */
 int count;

 /*! \brief TRUE if the redirecting.to information has changed */
 int to_changed;
};


/*! \brief B channel control structure */
struct misdn_bchannel {
 /*! \brief B channel send locking structure */
 struct send_lock *send_lock;

#if defined(AST_MISDN_ENHANCEMENTS)
 /*! \brief The BC, HLC (optional) and LLC (optional) contents from the SETUP message. */
 struct Q931_Bc_Hlc_Llc setup_bc_hlc_llc;
#endif /* defined(AST_MISDN_ENHANCEMENTS) */

 /*!
 * \brief Dialed/Called information struct
 * \note The number_type element is set to "dialplan" in /etc/asterisk/misdn.conf for outgoing calls
 */
 struct misdn_party_dialing dialed;

 /*! \brief Originating/Caller ID information struct
 * \note The number_type element can be set to "localdialplan" in /etc/asterisk/misdn.conf for outgoing calls
 * \note The number element can be set to "callerid" in /etc/asterisk/misdn.conf for outgoing calls
 */
 struct misdn_party_id caller;

 /*! \brief Incoming Caller ID string tag for special purpose
 * \note The element can be set to "incoming_cid_tag" in /etc/asterisk/misdn.conf for incoming calls
 */
 char incoming_cid_tag[MISDN_MAX_NAME_LEN];

 /*! \brief Connected-Party/Connected-Line ID information struct
 * \note The number_type element can be set to "cpndialplan" in /etc/asterisk/misdn.conf for outgoing calls
 */
 struct misdn_party_id connected;

 /*! \brief Redirecting information struct (Where a call diversion or transfer was invoked)
 * \note The redirecting subaddress is not defined in Q.931 so it is not used.
 */
 struct misdn_party_redirecting redirecting;

 /*! \brief TRUE if this is a dummy BC record */
 int dummy;

 /*! \brief TRUE if NT side of protocol (TE otherwise) */
 int nt;

 /*! \brief TRUE if ISDN-PRI (ISDN-BRI otherwise) */
 int pri;

 /*! \brief Logical Layer 1 port associated with this B channel */
 int port;

 /** init stuff **/
 /*! \brief B Channel mISDN driver stack ID */
 int b_stid;

 /* int b_addr; */

 /*! \brief B Channel mISDN driver layer ID from mISDN_new_layer() */
 int layer_id;

 /*! \brief B channel layer; set to 3 or 4 */
 int layer;

 /* state stuff */
 /*! \brief TRUE if DISCONNECT needs to be sent to clear a call */
 int need_disconnect;

 /*! \brief TRUE if RELEASE needs to be sent to clear a call */
 int need_release;

 /*! \brief TRUE if RELEASE_COMPLETE needs to be sent to clear a call */
 int need_release_complete;

 /*! \brief TRUE if allocate higher B channels first */
 int dec;

 /* var stuff */
 /*! \brief Layer 3 process ID */
 int l3_id;

 /*! \brief B channel process ID (1-5000) */
 int pid;

 /*! \brief Not used. Saved mISDN stack CONNECT_t ces value */
 int ces;

 /*! \brief B channel to restart if received a RESTART message */
 int restart_channel;

 /*! \brief Assigned B channel number B1, B2... 0 if not assigned */
 int channel;

 /*! \brief TRUE if the B channel number is preselected */
 int channel_preselected;

 /*! \brief TRUE if the B channel is allocated from the REGISTER pool */
 int is_register_pool;

 /*! \brief TRUE if B channel record is in use */
 int in_use;

 /*! \brief Time when empty_bc() last called on this record */
 struct timeval last_used;

 /*! \brief TRUE if call waiting */
 int cw;

 /*! \brief B Channel mISDN driver layer ID from mISDN_get_layerid() */
 int addr;

 /*! \brief B channel speech sample data buffer */
 char *bframe;

 /*! \brief B channel speech sample data buffer size */
 int bframe_len;
 int time_usec; /* Not used */

 /*! \brief Not used. Contents are setup but not used. */
 void *astbuf;

 /*! \brief TRUE if the TE side should choose the B channel to use
 * \note This value is user configurable in /etc/asterisk/misdn.conf
 */
 int te_choose_channel;

 /*! \brief TRUE if the call progress indicators can indicate an inband audio message for the user to listen to
 * \note This value is user configurable in /etc/asterisk/misdn.conf
 */
 int early_bconnect;

 /*! \brief Last decoded DTMF digit from mISDN driver */
 int dtmf;

 /*! \brief TRUE if we should produce DTMF tones ourselves
 * \note This value is user configurable in /etc/asterisk/misdn.conf
 */
 int send_dtmf;

 /*! \brief TRUE if we send SETUP_ACKNOWLEDGE on incoming calls anyway (instead of PROCEEDING).
 *
 * This requests additional INFORMATION messages, so we can
 * wait for digits without issues.
 * \note This value is user configurable in /etc/asterisk/misdn.conf
 */
 int need_more_infos;

 /*! \brief TRUE if all digits necessary to complete the call are available.
 * No more INFORMATION messages are needed.
 */
 int sending_complete;


 /*! \brief TRUE if we will not use jollys dsp */
 int nodsp;

 /*! \brief TRUE if we will not use the jitter buffer system */
 int nojitter;

 /*! \brief Progress Indicator IE coding standard field.
 * \note Collected from the incoming messages but not used.
 */
 int progress_coding;

 /*! \brief Progress Indicator IE location field.
 * \note Collected from the incoming messages but not used.
 */
 int progress_location;

 /*! \brief Progress Indicator IE progress description field.
 * Used to determine if there is an inband audio message present.
 */
 int progress_indicator;

#if defined(AST_MISDN_ENHANCEMENTS)
 /*!
 * \brief TRUE if waiting for DivertingLegInformation3 to queue redirecting update.
 */
 int div_leg_3_rx_wanted;

 /*!
 * \brief TRUE if a DivertingLegInformation3 needs to be sent with CONNECT.
 */
 int div_leg_3_tx_pending;
#endif /* defined(AST_MISDN_ENHANCEMENTS) */

 /*! \brief Inbound FACILITY message function type and contents */
 struct FacParm fac_in;

 /*! \brief Outbound FACILITY message function type and contents.
 * \note Filled in by misdn facility commands before FACILITY message sent.
 */
 struct FacParm fac_out;

 /* storing the current AOCD info here */
 enum FacFunction AOCDtype;
 union {
 struct FacAOCDCurrency currency;
 struct FacAOCDChargingUnit chargingUnit;
 } AOCD;
 /*! \brief TRUE if AOCDtype and AOCD data are ready to export to Asterisk */
 int AOCD_need_export;

 /*** CRYPTING STUFF ***/
 int crypt; /* Initialized, Not used */
 int curprx; /* Initialized, Not used */
 int curptx; /* Initialized, Not used */

 /*! \brief Blowfish encryption key string (secret) */
 char crypt_key[255];

 int crypt_state; /* Not used */
 /*** CRYPTING STUFF END***/

 /*! \brief Seems to have been intended for something to do with the jitter buffer.
 * \note Used as a boolean. Only initialized to 0 and referenced in a couple places
 */
 int active;
 int upset; /* Not used */

 /*! \brief TRUE if tone generator allowed to start */
 int generate_tone;

 /*! \brief Number of tone samples to generate */
 int tone_cnt;

 /*! \brief Current B Channel state */
 enum bchannel_state bc_state;

 /*! \brief This is used as a pending bridge join request for when bc_state becomes BCHAN_ACTIVATED */
 enum bchannel_state next_bc_state;

 /*! \brief Bridging conference ID */
 int conf_id;

 /*! \brief TRUE if this channel is on hold */
 int holded;

 /*! \brief TRUE if this channel is on the misdn_stack->holding list
 * \note If TRUE this implies that the structure is also malloced.
 */
 int stack_holder;

 /*!
 * \brief Put a display ie in the CONNECT message
 * \details
 * Put a display ie in the CONNECT message containing the following
 * information if it is available (nt port only):
 * 0 - Do not put the connected line information in the display ie.
 * 1 - Put the available connected line name in the display ie.
 * 2 - Put the available connected line number in the display ie.
 * 3 - Put the available connected line name and number in the display ie.
 */
 int display_connected;

 /*!
 * \brief Put a display ie in the SETUP message
 * \details
 * Put a display ie in the SETUP message containing the following
 * information if it is available (nt port only):
 * 0 - Do not put the caller information in the display ie.
 * 1 - Put the available caller name in the display ie.
 * 2 - Put the available caller number in the display ie.
 * 3 - Put the available caller name and number in the display ie.
 */
 int display_setup;

 /*!
 * \brief Select what to do with outgoing COLP information.
 * \details
 * 0 - pass (Send out COLP information unaltered.)
 * 1 - restricted (Force COLP to restricted on all outgoing COLP information.)
 * 2 - block (Do not send COLP information.)
 */
 int outgoing_colp;

 /*! \brief User set presentation restriction code
 * 0=Allowed, 1=Restricted, 2=Unavailable
 * \note It is settable by the misdn_set_opt() application.
 */
 int presentation;

 /*! \brief TRUE if the user set the presentation restriction code */
 int set_presentation;

 /*! \brief Notification indicator ie description code */
 enum mISDN_NOTIFY_CODE notify_description_code;

 /*! \brief SETUP message bearer capability field code value */
 int capability;

 /*! \brief Companding ALaw/uLaw encoding (INFO_CODEC_ALAW / INFO_CODEC_ULAW) */
 int law;

 /* V110 Stuff */
 /*! \brief Q.931 Bearer Capability IE Information Transfer Rate field. Initialized to 0x10 (64kbit). Altered by incoming SETUP messages. */
 int rate;

 /*! \brief Q.931 Bearer Capability IE Transfer Mode field. Initialized to 0 (Circuit). Altered by incoming SETUP messages. */
 int mode;

 /*! \brief Q.931 Bearer Capability IE User Information Layer 1 Protocol field code.
 * \note Collected from the incoming SETUP message but not used.
 */
 int user1;

 /*! \brief Q.931 Bearer Capability IE Layer 1 User Rate field.
 * \note Collected from the incoming SETUP message and exported to Asterisk variable MISDN_URATE.
 */
 int urate;

 /*! \brief TRUE if call made in digital HDLC mode
 * \note This value is user configurable in /etc/asterisk/misdn.conf.
 * It is also settable by the misdn_set_opt() application.
 */
 int hdlc;
 /* V110 */

 /*! \brief Display message that can be displayed by the user phone.
 * \note Maximum displayable length is 34 or 82 octets.
 * It is also settable by the misdn_set_opt() application.
 */
 char display[84];

 /*! \brief Q.931 Keypad Facility IE contents
 * \note Contents exported and imported to Asterisk variable MISDN_KEYPAD
 */
 char keypad[MISDN_MAX_KEYPAD_LEN];

 /*! \brief Current overlap dialing digits to/from INFORMATION messages */
 char info_dad[MISDN_MAX_NUMBER_LEN];

 /*! \brief Collected digits to go into info_dad[] while waiting for a SETUP_ACKNOWLEDGE to come in. */
 char infos_pending[MISDN_MAX_NUMBER_LEN];

/* unsigned char info_keypad[MISDN_MAX_KEYPAD_LEN]; */
/* unsigned char clisub[24]; */
/* unsigned char cldsub[24]; */

 /*! \brief User-User information string.
 * \note Contents exported and imported to Asterisk variable MISDN_USERUSER
 * \note We only support ASCII strings (IA5 characters).
 */
 char uu[256];

 /*! \brief User-User information string length in uu[] */
 int uulen;

 /*! \brief Q.931 Cause for disconnection code (received)
 * \note Need to use the AST_CAUSE_xxx code definitions in causes.h
 */
 int cause;

 /*! \brief Q.931 Cause for disconnection code (sent)
 * \note Need to use the AST_CAUSE_xxx code definitions in causes.h
 * \note -1 is used to suppress including the cause code in the RELEASE message.
 */
 int out_cause;

 /* struct misdn_bchannel hold_bc; */

 /** list stuf **/

#ifdef MISDN_1_2
 /*! \brief The configuration string for the mISDN dsp pipeline in /etc/asterisk/misdn.conf. */
 char pipeline[128];
#else
 /*! \brief TRUE if the echo cancellor is enabled */
 int ec_enable;

 /*! \brief Number of taps in the echo cancellor when enabled.
 * \note This value is user configurable in /etc/asterisk/misdn.conf (echocancel)
 */
 int ec_deftaps;
#endif

 /*! \brief TRUE if the channel was allocated from the available B channels */
 int channel_found;

 /*! \brief Who originated the call (ORG_AST, ORG_MISDN)
 * \note Set but not used when the misdn_set_opt() application enables echo cancellation.
 */
 int orig;

 /*! \brief Tx gain setting (range -8 to 8)
 * \note This value is user configurable in /etc/asterisk/misdn.conf.
 * It is also settable by the misdn_set_opt() application.
 */
 int txgain;

 /*! \brief Rx gain setting (range -8 to 8)
 * \note This value is user configurable in /etc/asterisk/misdn.conf.
 * It is also settable by the misdn_set_opt() application.
 */
 int rxgain;

 /*! \brief Next node in the misdn_stack.holding list */
 struct misdn_bchannel *next;
};


extern enum event_response_e (*cb_event) (enum event_e event, struct misdn_bchannel *bc, void *user_data);

extern void (*cb_log) (int level, int port, char *tmpl, ...)
 __attribute__ ((format (printf, 3, 4)));

extern int (*cb_jb_empty)(struct misdn_bchannel *bc, char *buffer, int len);

struct misdn_lib_iface {
 enum event_response_e (*cb_event)(enum event_e event, struct misdn_bchannel *bc, void *user_data);
 void (*cb_log)(int level, int port, char *tmpl, ...)
 __attribute__ ((format (printf, 3, 4)));
 int (*cb_jb_empty)(struct misdn_bchannel *bc, char *buffer, int len);
};

/***** USER IFACE **********/

void misdn_lib_nt_keepcalls(int kc);

void misdn_lib_nt_debug_init( int flags, char *file );

int misdn_lib_init(char *portlist, struct misdn_lib_iface* iface, void *user_data);
int misdn_lib_send_event(struct misdn_bchannel *bc, enum event_e event );
void misdn_lib_destroy(void);

void misdn_lib_isdn_l1watcher(int port);

void misdn_lib_log_ies(struct misdn_bchannel *bc);

char *manager_isdn_get_info(enum event_e event);

struct misdn_bchannel* misdn_lib_get_free_bc(int port, int channel, int inout, int dec);
#if defined(AST_MISDN_ENHANCEMENTS)
struct misdn_bchannel *misdn_lib_get_register_bc(int port);
#endif /* defined(AST_MISDN_ENHANCEMENTS) */

void manager_bchannel_activate(struct misdn_bchannel *bc);
void manager_bchannel_deactivate(struct misdn_bchannel * bc);

int misdn_lib_tx2misdn_frm(struct misdn_bchannel *bc, void *data, int len);

void manager_ph_control(struct misdn_bchannel *bc, int c1, int c2);

void isdn_lib_update_rxgain (struct misdn_bchannel *bc);
void isdn_lib_update_txgain (struct misdn_bchannel *bc);
void isdn_lib_update_ec (struct misdn_bchannel *bc);
void isdn_lib_stop_dtmf (struct misdn_bchannel *bc);

int misdn_lib_port_restart(int port);
int misdn_lib_pid_restart(int pid);
int misdn_lib_send_restart(int port, int channel);

int misdn_lib_get_port_info(int port);

int misdn_lib_is_port_blocked(int port);
int misdn_lib_port_block(int port);
int misdn_lib_port_unblock(int port);

int misdn_lib_port_is_pri(int port);
int misdn_lib_port_is_nt(int port);

int misdn_lib_port_up(int port, int notcheck);

int misdn_lib_get_port_down(int port);

int misdn_lib_get_port_up (int port) ;

int misdn_lib_maxports_get(void) ;

struct misdn_bchannel *misdn_lib_find_held_bc(int port, int l3_id);
void misdn_lib_release(struct misdn_bchannel *bc);

int misdn_cap_is_speech(int cap);
int misdn_inband_avail(struct misdn_bchannel *bc);

void manager_ec_enable(struct misdn_bchannel *bc);
void manager_ec_disable(struct misdn_bchannel *bc);

void misdn_lib_send_tone(struct misdn_bchannel *bc, enum tone_e tone);

void get_show_stack_details(int port, char *buf);


void misdn_lib_tone_generator_start(struct misdn_bchannel *bc);
void misdn_lib_tone_generator_stop(struct misdn_bchannel *bc);


void misdn_lib_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2);
void misdn_lib_split_bridge( struct misdn_bchannel * bc1, struct misdn_bchannel *bc2);

void misdn_lib_echo(struct misdn_bchannel *bc, int onoff);

int misdn_lib_is_ptp(int port);
int misdn_lib_get_maxchans(int port);

void misdn_lib_reinit_nt_stack(int port);

#define PRI_TRANS_CAP_SPEECH 0x0
#define PRI_TRANS_CAP_DIGITAL 0x08
#define PRI_TRANS_CAP_RESTRICTED_DIGITAL 0x09
#define PRI_TRANS_CAP_3_1K_AUDIO 0x10
#define PRI_TRANS_CAP_7K_AUDIO 0x11



char *bc_state2str(enum bchannel_state state);
void bc_state_change(struct misdn_bchannel *bc, enum bchannel_state state);

void misdn_dump_chanlist(void);

void misdn_make_dummy(struct misdn_bchannel *dummybc, int port, int l3id, int nt, int channel);


#endif /* TE_LIB */