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674 lines
17 KiB
674 lines
17 KiB
/*
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* Chan_Misdn -- Channel Driver for Asterisk
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*
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* Interface to mISDN
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*
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* Copyright (C) 2004, Christian Richter
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*
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* Christian Richter <crich@beronet.com>
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*
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* This program is free software, distributed under the terms of
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* the GNU General Public License
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*/
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/*! \file
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* \brief Interface to mISDN
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*
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* \author Christian Richter <crich@beronet.com>
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*/
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#ifndef TE_LIB
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#define TE_LIB
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#include <mISDNuser/suppserv.h>
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/** For initialization usage **/
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/* typedef int ie_nothing_t ;*/
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/** end of init usage **/
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/*
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* uncomment the following to make chan_misdn create
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* record files in /tmp/misdn-{rx|tx}-PortChannel format
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* */
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/*#define MISDN_SAVE_DATA*/
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#ifdef WITH_BEROEC
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typedef int beroec_t;
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enum beroec_type {
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BEROEC_FULLBAND=0,
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BEROEC_SUBBAND,
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BEROEC_FASTSUBBAND
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};
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void beroec_init(void);
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void beroec_exit(void);
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beroec_t *beroec_new(int tail, enum beroec_type type, int anti_howl,
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int tonedisable, int zerocoeff, int adapt, int nlp);
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void beroec_destroy(beroec_t *ec);
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int beroec_cancel_alaw_chunk(beroec_t *ec,
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char *send,
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char *receive,
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int len);
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int beroec_version(void);
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#endif
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enum tone_e {
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TONE_NONE=0,
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TONE_DIAL,
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TONE_ALERTING,
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TONE_FAR_ALERTING,
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TONE_BUSY,
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TONE_HANGUP,
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TONE_CUSTOM,
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TONE_FILE
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};
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#define MAX_BCHANS 31
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enum bchannel_state {
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BCHAN_CLEANED=0,
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BCHAN_EMPTY,
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BCHAN_SETUP,
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BCHAN_SETUPED,
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BCHAN_ACTIVE,
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BCHAN_ACTIVATED,
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BCHAN_BRIDGE,
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BCHAN_BRIDGED,
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BCHAN_RELEASE,
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BCHAN_RELEASED,
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BCHAN_CLEAN,
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BCHAN_CLEAN_REQUEST,
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BCHAN_ERROR
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};
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enum misdn_err_e {
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ENOCHAN=1
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};
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enum mISDN_NUMBER_PLAN {
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NUMPLAN_UNINITIALIZED=-1,
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NUMPLAN_INTERNATIONAL=0x1,
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NUMPLAN_NATIONAL=0x2,
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NUMPLAN_SUBSCRIBER=0x4,
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NUMPLAN_UNKNOWN=0x0
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};
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enum event_response_e {
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RESPONSE_IGNORE_SETUP_WITHOUT_CLOSE,
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RESPONSE_IGNORE_SETUP,
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RESPONSE_RELEASE_SETUP,
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RESPONSE_ERR,
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RESPONSE_OK
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};
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enum event_e {
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EVENT_NOTHING,
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EVENT_TONE_GENERATE,
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EVENT_BCHAN_DATA,
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EVENT_BCHAN_ACTIVATED,
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EVENT_BCHAN_ERROR,
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EVENT_CLEANUP,
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EVENT_PROCEEDING,
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EVENT_PROGRESS,
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EVENT_SETUP,
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EVENT_ALERTING,
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EVENT_CONNECT,
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EVENT_SETUP_ACKNOWLEDGE,
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EVENT_CONNECT_ACKNOWLEDGE ,
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EVENT_USER_INFORMATION,
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EVENT_SUSPEND_REJECT,
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EVENT_RESUME_REJECT,
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EVENT_HOLD,
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EVENT_SUSPEND,
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EVENT_RESUME,
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EVENT_HOLD_ACKNOWLEDGE,
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EVENT_SUSPEND_ACKNOWLEDGE,
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EVENT_RESUME_ACKNOWLEDGE,
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EVENT_HOLD_REJECT,
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EVENT_RETRIEVE,
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EVENT_RETRIEVE_ACKNOWLEDGE,
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EVENT_RETRIEVE_REJECT,
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EVENT_DISCONNECT,
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EVENT_RESTART,
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EVENT_RELEASE,
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EVENT_RELEASE_COMPLETE,
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EVENT_FACILITY,
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EVENT_NOTIFY,
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EVENT_STATUS_ENQUIRY,
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EVENT_INFORMATION,
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EVENT_STATUS,
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EVENT_TIMEOUT,
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EVENT_DTMF_TONE,
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EVENT_NEW_L3ID,
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EVENT_NEW_BC,
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EVENT_PORT_ALARM,
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EVENT_NEW_CHANNEL,
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EVENT_UNKNOWN
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};
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enum ie_name_e {
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IE_DUMMY,
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IE_LAST
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};
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enum { /* bearer capability */
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INFO_CAPABILITY_SPEECH=0,
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INFO_CAPABILITY_AUDIO_3_1K=0x10 ,
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INFO_CAPABILITY_AUDIO_7K=0x11 ,
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INFO_CAPABILITY_VIDEO =0x18,
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INFO_CAPABILITY_DIGITAL_UNRESTRICTED =0x8,
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INFO_CAPABILITY_DIGITAL_RESTRICTED =0x09,
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INFO_CAPABILITY_DIGITAL_UNRESTRICTED_TONES
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};
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enum { /* progress indicators */
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INFO_PI_CALL_NOT_E2E_ISDN =0x01,
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INFO_PI_CALLED_NOT_ISDN =0x02,
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INFO_PI_CALLER_NOT_ISDN =0x03,
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INFO_PI_CALLER_RETURNED_TO_ISDN =0x04,
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INFO_PI_INBAND_AVAILABLE =0x08,
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INFO_PI_DELAY_AT_INTERF =0x0a,
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INFO_PI_INTERWORKING_WITH_PUBLIC =0x10,
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INFO_PI_INTERWORKING_NO_RELEASE =0x11,
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INFO_PI_INTERWORKING_NO_RELEASE_PRE_ANSWER =0x12,
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INFO_PI_INTERWORKING_NO_RELEASE_POST_ANSWER =0x13
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};
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enum { /*CODECS*/
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INFO_CODEC_ULAW=2,
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INFO_CODEC_ALAW=3
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};
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enum layer_e {
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L3,
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L2,
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L1,
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UNKNOWN
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};
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struct misdn_bchannel {
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/*! \brief B channel send locking structure */
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struct send_lock *send_lock;
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/*! \brief TRUE if this is a dummy BC record */
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int dummy;
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/*! \brief TRUE if NT side of protocol (TE otherwise) */
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int nt;
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/*! \brief TRUE if ISDN-PRI (ISDN-BRI otherwise) */
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int pri;
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/*! \brief Logical Layer 1 port associated with this B channel */
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int port;
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/** init stuff **/
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/*! \brief B Channel mISDN driver stack ID */
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int b_stid;
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/* int b_addr; */
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/*! \brief B Channel mISDN driver layer ID from mISDN_new_layer() */
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int layer_id;
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/*! \brief B channel layer; set to 3 or 4 */
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int layer;
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/* state stuff */
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/*! \brief TRUE if DISCONNECT needs to be sent to clear a call */
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int need_disconnect;
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/*! \brief TRUE if RELEASE needs to be sent to clear a call */
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int need_release;
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/*! \brief TRUE if RELEASE_COMPLETE needs to be sent to clear a call */
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int need_release_complete;
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/*! \brief TRUE if allocate higher B channels first */
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int dec;
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/* var stuff */
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/*! \brief Layer 3 process ID */
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int l3_id;
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/*! \brief B channel process ID (1-5000) */
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int pid;
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/*! \brief Not used. Saved mISDN stack CONNECT_t ces value */
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int ces;
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/*! \brief B channel to restart if received a RESTART message */
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int restart_channel;
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/*! \brief Assigned B channel number B1, B2... 0 if not assigned */
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int channel;
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/*! \brief TRUE if the B channel number is preselected */
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int channel_preselected;
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/*! \brief TRUE if B channel record is in use */
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int in_use;
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/*! \brief Time when empty_bc() last called on this record */
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struct timeval last_used;
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/*! \brief TRUE if call waiting */
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int cw;
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/*! \brief B Channel mISDN driver layer ID from mISDN_get_layerid() */
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int addr;
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/*! \brief B channel speech sample data buffer */
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char *bframe;
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/*! \brief B channel speech sample data buffer size */
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int bframe_len;
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int time_usec; /* Not used */
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/*! \brief Not used. Contents are setup but not used. */
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void *astbuf;
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void *misdnbuf; /* Not used */
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/*! \brief TRUE if the TE side should choose the B channel to use
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* \note This value is user configurable in /etc/asterisk/misdn.conf
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*/
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int te_choose_channel;
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/*! \brief TRUE if the call progress indicators can indicate an inband audio message for the user to listen to
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* \note This value is user configurable in /etc/asterisk/misdn.conf
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*/
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int early_bconnect;
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/*! \brief Last decoded DTMF digit from mISDN driver */
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int dtmf;
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/*! \brief TRUE if we should produce DTMF tones ourselves
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* \note This value is user configurable in /etc/asterisk/misdn.conf
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*/
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int send_dtmf;
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/*! \brief TRUE if we send SETUP_ACKNOWLEDGE on incoming calls anyway (instead of PROCEEDING).
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*
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* This requests additional INFORMATION messages, so we can
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* wait for digits without issues.
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* \note This value is user configurable in /etc/asterisk/misdn.conf
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*/
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int need_more_infos;
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/*! \brief TRUE if all digits necessary to complete the call are available.
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* No more INFORMATION messages are needed.
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*/
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int sending_complete;
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/*! \brief TRUE if we will not use jollys dsp */
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int nodsp;
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/*! \brief TRUE if we will not use the jitter buffer system */
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int nojitter;
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/*! \brief Type-of-number in ISDN terms for the dialed/called number
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* \note This value is set to "dialplan" in /etc/asterisk/misdn.conf for outgoing calls
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*/
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enum mISDN_NUMBER_PLAN dnumplan;
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/*! \brief Type-of-number in ISDN terms for the redirecting number which a call diversion or transfer was invoked.
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* \note Collected from the incoming SETUP message but not used.
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*/
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enum mISDN_NUMBER_PLAN rnumplan;
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/*! \brief Type-of-number in ISDN terms for the originating/calling number (Caller-ID)
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* \note This value is set to "localdialplan" in /etc/asterisk/misdn.conf for outgoing calls
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*/
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enum mISDN_NUMBER_PLAN onumplan;
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/*! \brief Type-of-number in ISDN terms for the connected party number
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* \note This value is set to "cpndialplan" in /etc/asterisk/misdn.conf for outgoing calls
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*/
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enum mISDN_NUMBER_PLAN cpnnumplan;
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/*! \brief Progress Indicator IE coding standard field.
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* \note Collected from the incoming messages but not used.
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*/
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int progress_coding;
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/*! \brief Progress Indicator IE location field.
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* \note Collected from the incoming messages but not used.
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*/
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int progress_location;
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/*! \brief Progress Indicator IE progress description field.
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* Used to determine if there is an inband audio message present.
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*/
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int progress_indicator;
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/*! \brief Inbound FACILITY message function type and contents */
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struct FacParm fac_in;
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/*! \brief Outbound FACILITY message function type and contents.
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* \note Filled in by misdn facility commands before FACILITY message sent.
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*/
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struct FacParm fac_out;
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/* storing the current AOCD info here */
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enum FacFunction AOCDtype;
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union {
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struct FacAOCDCurrency currency;
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struct FacAOCDChargingUnit chargingUnit;
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} AOCD;
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/*! \brief Event waiting for Layer 1 to come up */
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enum event_e evq;
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/*** CRYPTING STUFF ***/
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int crypt; /* Initialized, Not used */
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int curprx; /* Initialized, Not used */
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int curptx; /* Initialized, Not used */
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/*! \brief Blowfish encryption key string (secret) */
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char crypt_key[255];
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int crypt_state; /* Not used */
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/*** CRYPTING STUFF END***/
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/*! \brief Seems to have been intended for something to do with the jitter buffer.
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* \note Used as a boolean. Only initialized to 0 and referenced in a couple places
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*/
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int active;
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int upset; /* Not used */
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/*! \brief TRUE if tone generator allowed to start */
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int generate_tone;
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/*! \brief Number of tone samples to generate */
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int tone_cnt;
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/*! \brief Current B Channel state */
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enum bchannel_state bc_state;
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/*! \brief This is used as a pending bridge join request for when bc_state becomes BCHAN_ACTIVATED */
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enum bchannel_state next_bc_state;
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/*! \brief Bridging conference ID */
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int conf_id;
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/*! \brief TRUE if this channel is on hold */
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int holded;
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/*! \brief TRUE if this channel is on the misdn_stack->holding list
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* \note If TRUE this implies that the structure is also malloced.
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*/
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int stack_holder;
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/*! \brief Caller ID presentation restriction code
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* 0=Allowed, 1=Restricted, 2=Unavailable
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* \note It is settable by the misdn_set_opt() application.
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*/
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int pres;
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/*! \brief Caller ID screening code
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* 0=Unscreened, 1=Passed Screen, 2=Failed Screen, 3=Network Number
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*/
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int screen;
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/*! \brief SETUP message bearer capability field code value */
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int capability;
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/*! \brief Companding ALaw/uLaw encoding (INFO_CODEC_ALAW / INFO_CODEC_ULAW) */
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int law;
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/* V110 Stuff */
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/*! \brief Q.931 Bearer Capability IE Information Transfer Rate field. Initialized to 0x10 (64kbit). Altered by incoming SETUP messages. */
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int rate;
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/*! \brief Q.931 Bearer Capability IE Transfer Mode field. Initialized to 0 (Circuit). Altered by incoming SETUP messages. */
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int mode;
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/*! \brief Q.931 Bearer Capability IE User Information Layer 1 Protocol field code.
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* \note Collected from the incoming SETUP message but not used.
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*/
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int user1;
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/*! \brief Q.931 Bearer Capability IE Layer 1 User Rate field.
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* \note Collected from the incoming SETUP message and exported to Asterisk variable MISDN_URATE.
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*/
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int urate;
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/*! \brief TRUE if call made in digital HDLC mode
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* \note This value is user configurable in /etc/asterisk/misdn.conf.
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* It is also settable by the misdn_set_opt() application.
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*/
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int hdlc;
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/* V110 */
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/*! \brief Display message that can be displayed by the user phone.
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* \note Maximum displayable length is 34 or 82 octets.
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* It is also settable by the misdn_set_opt() application.
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*/
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char display[84];
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/*! \brief Not used. Contents are setup but not used. */
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char msn[32];
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/*! \brief Originating/Calling Phone Number (Address)
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* \note This value can be set to "callerid" in /etc/asterisk/misdn.conf for outgoing calls
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*/
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char oad[32];
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/*! \brief Redirecting Phone Number (Address) where a call diversion or transfer was invoked */
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char rad[32];
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/*! \brief Dialed/Called Phone Number (Address) */
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char dad[32];
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/*! \brief Connected Party/Line Phone Number (Address) */
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char cad[32];
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/*! \brief Original Dialed/Called Phone Number (Address) before national/international dialing prefix added.
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* \note Not used. Contents are setup but not used.
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*/
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char orig_dad[32];
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/*! \brief Q.931 Keypad Facility IE contents
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* \note Contents exported and imported to Asterisk variable MISDN_KEYPAD
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*/
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char keypad[32];
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/*! \brief Current overlap dialing digits to/from INFORMATION messages */
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char info_dad[64];
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/*! \brief Collected digits to go into info_dad[] while waiting for a SETUP_ACKNOWLEDGE to come in. */
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char infos_pending[64];
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/* unsigned char info_keypad[32]; */
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/* unsigned char clisub[24]; */
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/* unsigned char cldsub[24]; */
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/*! \brief User-User information string.
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* \note Contents exported and imported to Asterisk variable MISDN_USERUSER
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* \note We only support ASCII strings (IA5 characters).
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*/
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char uu[256];
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/*! \brief User-User information string length in uu[] */
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int uulen;
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/*! \brief Q.931 Cause for disconnection code (received)
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* \note Need to use the AST_CAUSE_xxx code definitions in causes.h
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*/
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int cause;
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/*! \brief Q.931 Cause for disconnection code (sent)
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* \note Need to use the AST_CAUSE_xxx code definitions in causes.h
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* \note -1 is used to suppress including the cause code in the RELEASE message.
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*/
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int out_cause;
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/* struct misdn_bchannel hold_bc; */
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/** list stuf **/
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#ifdef MISDN_1_2
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/*! \brief The configuration string for the mISDN dsp pipeline in /etc/asterisk/misdn.conf. */
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char pipeline[128];
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#else
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/*! \brief TRUE if the echo cancellor is enabled */
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int ec_enable;
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/*! \brief Number of taps in the echo cancellor when enabled.
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* \note This value is user configurable in /etc/asterisk/misdn.conf (echocancel)
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*/
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int ec_deftaps;
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#endif
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/*! \brief TRUE if the channel was allocated from the available B channels */
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int channel_found;
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/*! \brief Who originated the call (ORG_AST, ORG_MISDN)
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* \note Set but not used when the misdn_set_opt() application enables echo cancellation.
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*/
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int orig;
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/*! \brief Tx gain setting (range -8 to 8)
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* \note This value is user configurable in /etc/asterisk/misdn.conf.
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* It is also settable by the misdn_set_opt() application.
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*/
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int txgain;
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/*! \brief Rx gain setting (range -8 to 8)
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* \note This value is user configurable in /etc/asterisk/misdn.conf.
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* It is also settable by the misdn_set_opt() application.
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*/
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int rxgain;
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/*! \brief Next node in the misdn_stack.holding list */
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struct misdn_bchannel *next;
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};
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enum event_response_e (*cb_event) (enum event_e event, struct misdn_bchannel *bc, void *user_data);
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void (*cb_log) (int level, int port, char *tmpl, ...)
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__attribute__ ((format (printf, 3, 4)));
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int (*cb_jb_empty)(struct misdn_bchannel *bc, char *buffer, int len);
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struct misdn_lib_iface {
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enum event_response_e (*cb_event)(enum event_e event, struct misdn_bchannel *bc, void *user_data);
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void (*cb_log)(int level, int port, char *tmpl, ...)
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__attribute__ ((format (printf, 3, 4)));
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int (*cb_jb_empty)(struct misdn_bchannel *bc, char *buffer, int len);
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};
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/***** USER IFACE **********/
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void misdn_lib_nt_keepcalls(int kc);
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void misdn_lib_nt_debug_init( int flags, char *file );
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int misdn_lib_init(char *portlist, struct misdn_lib_iface* iface, void *user_data);
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int misdn_lib_send_event(struct misdn_bchannel *bc, enum event_e event );
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void misdn_lib_destroy(void);
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void misdn_lib_isdn_l1watcher(int port);
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void misdn_lib_log_ies(struct misdn_bchannel *bc);
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char *manager_isdn_get_info(enum event_e event);
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struct misdn_bchannel* misdn_lib_get_free_bc(int port, int channel, int inout, int dec);
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void manager_bchannel_activate(struct misdn_bchannel *bc);
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void manager_bchannel_deactivate(struct misdn_bchannel * bc);
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int misdn_lib_tx2misdn_frm(struct misdn_bchannel *bc, void *data, int len);
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void manager_ph_control(struct misdn_bchannel *bc, int c1, int c2);
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void isdn_lib_update_rxgain (struct misdn_bchannel *bc);
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void isdn_lib_update_txgain (struct misdn_bchannel *bc);
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void isdn_lib_update_ec (struct misdn_bchannel *bc);
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void isdn_lib_stop_dtmf (struct misdn_bchannel *bc);
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int misdn_lib_port_restart(int port);
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int misdn_lib_pid_restart(int pid);
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int misdn_lib_send_restart(int port, int channel);
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int misdn_lib_get_port_info(int port);
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int misdn_lib_is_port_blocked(int port);
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int misdn_lib_port_block(int port);
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int misdn_lib_port_unblock(int port);
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int misdn_lib_port_is_pri(int port);
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int misdn_lib_port_up(int port, int notcheck);
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int misdn_lib_get_port_down(int port);
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int misdn_lib_get_port_up (int port) ;
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int misdn_lib_maxports_get(void) ;
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struct misdn_bchannel *misdn_lib_find_held_bc(int port, int l3_id);
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void misdn_lib_release(struct misdn_bchannel *bc);
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|
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int misdn_cap_is_speech(int cap);
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int misdn_inband_avail(struct misdn_bchannel *bc);
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|
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void manager_ec_enable(struct misdn_bchannel *bc);
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|
void manager_ec_disable(struct misdn_bchannel *bc);
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|
|
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void misdn_lib_send_tone(struct misdn_bchannel *bc, enum tone_e tone);
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|
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void get_show_stack_details(int port, char *buf);
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|
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|
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void misdn_lib_tone_generator_start(struct misdn_bchannel *bc);
|
|
void misdn_lib_tone_generator_stop(struct misdn_bchannel *bc);
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|
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|
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void misdn_lib_setup_bc(struct misdn_bchannel *bc);
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|
|
|
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);
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|
|
|
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);
|
|
|
|
#endif
|