Sat Aug 6 00:40:07 2011

Asterisk developer's documentation


Module: Dial plan applications

Applications support the dialplan. They register dynamically with ast_register_application() and unregister with ast_unregister_application(). More...


Files

file  app_adsiprog.c
 Program Asterisk ADSI Scripts into phone.
file  app_alarmreceiver.c
 Central Station Alarm receiver for Ademco Contact ID.
file  app_authenticate.c
 Execute arbitrary authenticate commands.
file  app_cdr.c
 Applications connected with CDR engine.
file  app_chanisavail.c
 Check if Channel is Available.
file  app_channelredirect.c
 ChannelRedirect application.
file  app_chanspy.c
 ChanSpy: Listen in on any channel.
file  app_controlplayback.c
 Trivial application to control playback of a sound file.
file  app_dahdibarge.c
 Zap Barge support.
file  app_dahdiras.c
 Execute an ISDN RAS.
file  app_dahdiscan.c
 Zap Scanner.
file  app_db.c
 Database access functions.
file  app_dial.c
 dial() & retrydial() - Trivial application to dial a channel and send an URL on answer
file  app_dictate.c
 Virtual Dictation Machine Application For Asterisk.
file  app_directed_pickup.c
 Directed Call Pickup Support.
file  app_directory.c
 Provide a directory of extensions.
file  app_disa.c
 DISA -- Direct Inward System Access Application.
file  app_dumpchan.c
 Application to dump channel variables.
file  app_echo.c
 Echo application -- play back what you hear to evaluate latency.
file  app_exec.c
 Exec application.
file  app_externalivr.c
 External IVR application interface.
file  app_festival.c
 Connect to festival.
file  app_flash.c
 App to flash a DAHDI trunk.
file  app_followme.c
 Find-Me Follow-Me application.
file  app_forkcdr.c
 Fork CDR application.
file  app_getcpeid.c
 Get ADSI CPE ID.
file  app_hasnewvoicemail.c
 HasVoicemail application.
file  app_ices.c
 Stream to an icecast server via ICES (see contrib/asterisk-ices.xml).
file  app_image.c
 App to transmit an image.
file  app_ivrdemo.c
 IVR Demo application.
file  app_lookupblacklist.c
 App to lookup the callerid number, and see if it is blacklisted.
file  app_lookupcidname.c
 App to set callerid name from database, based on directory number.
file  app_macro.c
 Dial plan macro Implementation.
file  app_meetme.c
 Meet me conference bridge and Shared Line Appearances.
file  app_milliwatt.c
 Digital Milliwatt Test.
file  app_mixmonitor.c
 MixMonitor() - Record a call and mix the audio during the recording.
file  app_morsecode.c
 Morsecode application.
file  app_mp3.c
 Silly application to play an MP3 file -- uses mpg123.
file  app_nbscat.c
 Silly application to play an NBScat file -- uses nbscat8k.
file  app_osplookup.c
 Open Settlement Protocol (OSP) Applications.
file  app_page.c
 page() - Paging application
file  app_parkandannounce.c
 ParkAndAnnounce application for Asterisk.
file  app_playback.c
 Trivial application to playback a sound file.
file  app_privacy.c
 Block all calls without Caller*ID, require phone # to be entered.
file  app_queue.c
 True call queues with optional send URL on answer.
file  app_random.c
 Random application.
file  app_read.c
 Trivial application to read a variable.
file  app_readfile.c
 ReadFile application -- Reads in a File for you.
file  app_realtime.c
 RealTime App.
file  app_record.c
 Trivial application to record a sound file.
file  app_sayunixtime.c
 SayUnixTime application.
file  app_senddtmf.c
 App to send DTMF digits.
file  app_sendtext.c
 App to transmit a text message.
file  app_setcallerid.c
 App to set callerid.
file  app_setcdruserfield.c
 Applictions connected with CDR engine.
file  app_settransfercapability.c
 App to set the ISDN Transfer Capability.
file  app_skel.c
 Skeleton application.
file  app_sms.c
 SMS application - ETSI ES 201 912 protocol 1 implimentation.
file  app_softhangup.c
 SoftHangup application.
file  app_speech_utils.c
 Speech Recognition Utility Applications.
file  app_stack.c
 Stack applications Gosub, Return, etc.
file  app_system.c
 Execute arbitrary system commands.
file  app_talkdetect.c
 Playback a file with audio detect.
file  app_test.c
 Applications to test connection and produce report in text file.
file  app_transfer.c
 Transfer a caller.
file  app_url.c
 App to transmit a URL.
file  app_userevent.c
 UserEvent application -- send manager event.
file  app_verbose.c
 Verbose logging application.
file  app_voicemail.c
 Comedian Mail - Voicemail System.
file  app_waitforring.c
 Wait for Ring Application.
file  app_waitforsilence.c
 Wait for Silence
  • Waits for up to 'x' milliseconds of silence, 'y' times
  • WaitForSilence(500,2) will wait for 1/2 second of silence, twice
  • WaitForSilence(1000,1) will wait for 1 second of silence, once
  • WaitForSilence(300,3,10) will wait for 300ms of silence, 3 times, and return after 10sec
    .

file  app_while.c
 While Loop Implementation.
file  app_zapateller.c
 Playback the special information tone to get rid of telemarketers.

Functions

static int iax2_prov_app (struct ast_channel *chan, void *data)
static int pbx_builtin_answer (struct ast_channel *, void *)
static int pbx_builtin_background (struct ast_channel *, void *)
static int pbx_builtin_busy (struct ast_channel *, void *)
static int pbx_builtin_congestion (struct ast_channel *, void *)
static int pbx_builtin_execiftime (struct ast_channel *, void *)
static int pbx_builtin_goto (struct ast_channel *, void *)
static int pbx_builtin_gotoiftime (struct ast_channel *, void *)
static int pbx_builtin_hangup (struct ast_channel *, void *)
static int pbx_builtin_proceeding (struct ast_channel *, void *)
static int pbx_builtin_progress (struct ast_channel *, void *)
static int pbx_builtin_resetcdr (struct ast_channel *, void *)
static int pbx_builtin_ringing (struct ast_channel *, void *)
static int pbx_builtin_setamaflags (struct ast_channel *, void *)
static int pbx_builtin_wait (struct ast_channel *, void *)
static int pbx_builtin_waitexten (struct ast_channel *, void *)

Detailed Description

Applications support the dialplan. They register dynamically with ast_register_application() and unregister with ast_unregister_application().

Asterisk Dial Plan Applications

See also

Function Documentation

static int iax2_prov_app ( struct ast_channel chan,
void *  data 
) [static]

iax2provision

Definition at line 10285 of file chan_iax2.c.

References ast_inet_ntoa(), ast_log(), ast_strdupa, ast_strlen_zero(), ast_verbose(), iax2_provision(), iax2_tech, iaxs, LOG_NOTICE, option_verbose, PTR_TO_CALLNO, create_addr_info::sockfd, ast_channel::tech, ast_channel::tech_pvt, and VERBOSE_PREFIX_3.

Referenced by load_module().

10286 {
10287    int res;
10288    char *sdata;
10289    char *opts;
10290    int force =0;
10291    unsigned short callno = PTR_TO_CALLNO(chan->tech_pvt);
10292    if (ast_strlen_zero(data))
10293       data = "default";
10294    sdata = ast_strdupa(data);
10295    opts = strchr(sdata, '|');
10296    if (opts)
10297       *opts='\0';
10298 
10299    if (chan->tech != &iax2_tech) {
10300       ast_log(LOG_NOTICE, "Can't provision a non-IAX device!\n");
10301       return -1;
10302    } 
10303    if (!callno || !iaxs[callno] || !iaxs[callno]->addr.sin_addr.s_addr) {
10304       ast_log(LOG_NOTICE, "Can't provision something with no IP?\n");
10305       return -1;
10306    }
10307    res = iax2_provision(&iaxs[callno]->addr, iaxs[callno]->sockfd, NULL, sdata, force);
10308    if (option_verbose > 2)
10309       ast_verbose(VERBOSE_PREFIX_3 "Provisioned IAXY at '%s' with '%s'= %d\n", 
10310       ast_inet_ntoa(iaxs[callno]->addr.sin_addr),
10311       sdata, res);
10312    return res;
10313 }

static int pbx_builtin_answer ( struct ast_channel ,
void *   
) [static]

Definition at line 5586 of file pbx.c.

References ast_channel::_state, ast_answer(), ast_safe_sleep(), AST_STATE_UP, and ast_strlen_zero().

05587 {
05588    int delay = 0;
05589    int res;
05590 
05591    if (chan->_state == AST_STATE_UP)
05592       delay = 0;
05593    else if (!ast_strlen_zero(data))
05594       delay = atoi(data);
05595 
05596    res = ast_answer(chan);
05597    if (res)
05598       return res;
05599 
05600    if (delay)
05601       res = ast_safe_sleep(chan, delay);
05602 
05603    return res;
05604 }

static int pbx_builtin_background ( struct ast_channel ,
void *   
) [static]

Definition at line 5819 of file pbx.c.

References ast_channel::_state, ast_answer(), AST_APP_ARG, ast_app_parse_options(), ast_canmatch_extension(), ast_channel_lock, ast_channel_unlock, ast_copy_string(), AST_DECLARE_APP_ARGS, AST_DIGIT_ANY, AST_FLAG_DISABLE_WORKAROUNDS, ast_log(), ast_matchmore_extension(), AST_STANDARD_APP_ARGS, AST_STATE_UP, ast_stopstream(), ast_strdupa, ast_streamfile(), ast_strlen_zero(), ast_test_flag, ast_waitstream(), ast_waitstream_exten(), BACKGROUND_MATCHEXTEN, BACKGROUND_NOANSWER, background_opts, BACKGROUND_PLAYBACK, BACKGROUND_SKIP, ast_channel::cid, ast_callerid::cid_num, ast_channel::context, ast_channel::exten, ast_flags::flags, ast_channel::language, LOG_WARNING, ast_channel::name, parse(), pbx_builtin_getvar_helper(), and ast_channel::priority.

05820 {
05821    int res = 0;
05822    struct ast_flags flags = {0};
05823    char *parse, exten[2] = "";
05824    AST_DECLARE_APP_ARGS(args,
05825       AST_APP_ARG(filename);
05826       AST_APP_ARG(options);
05827       AST_APP_ARG(lang);
05828       AST_APP_ARG(context);
05829    );
05830 
05831    if (ast_strlen_zero(data)) {
05832       ast_log(LOG_WARNING, "Background requires an argument (filename)\n");
05833       return -1;
05834    }
05835 
05836    parse = ast_strdupa(data);
05837 
05838    AST_STANDARD_APP_ARGS(args, parse);
05839 
05840    if (ast_strlen_zero(args.lang))
05841       args.lang = (char *)chan->language; /* XXX this is const */
05842 
05843    if (ast_strlen_zero(args.context)) {
05844       const char *context;
05845       ast_channel_lock(chan);
05846       if ((context = pbx_builtin_getvar_helper(chan, "MACRO_CONTEXT"))) {
05847          args.context = ast_strdupa(context);
05848       } else {
05849          args.context = chan->context;
05850       }
05851       ast_channel_unlock(chan);
05852    }
05853 
05854    if (args.options) {
05855       if (!strcasecmp(args.options, "skip"))
05856          flags.flags = BACKGROUND_SKIP;
05857       else if (!strcasecmp(args.options, "noanswer"))
05858          flags.flags = BACKGROUND_NOANSWER;
05859       else
05860          ast_app_parse_options(background_opts, &flags, NULL, args.options);
05861    }
05862 
05863    /* Answer if need be */
05864    if (chan->_state != AST_STATE_UP) {
05865       if (ast_test_flag(&flags, BACKGROUND_SKIP)) {
05866          return 0;
05867       } else if (!ast_test_flag(&flags, BACKGROUND_NOANSWER)) {
05868          res = ast_answer(chan);
05869       }
05870    }
05871 
05872    if (!res) {
05873       char *back = args.filename;
05874       char *front;
05875       ast_stopstream(chan);      /* Stop anything playing */
05876       /* Stream the list of files */
05877       while (!res && (front = strsep(&back, "&")) ) {
05878          if ( (res = ast_streamfile(chan, front, args.lang)) ) {
05879             ast_log(LOG_WARNING, "ast_streamfile failed on %s for %s\n", chan->name, (char*)data);
05880             res = 0;
05881             break;
05882          }
05883          if (ast_test_flag(&flags, BACKGROUND_PLAYBACK)) {
05884             res = ast_waitstream(chan, "");
05885          } else if (ast_test_flag(&flags, BACKGROUND_MATCHEXTEN)) {
05886             res = ast_waitstream_exten(chan, args.context);
05887          } else {
05888             res = ast_waitstream(chan, AST_DIGIT_ANY);
05889          }
05890          ast_stopstream(chan);
05891       }
05892    }
05893 
05894    /*
05895     * If the single digit DTMF is an extension in the specified context, then
05896     * go there and signal no DTMF.  Otherwise, we should exit with that DTMF.
05897     * If we're in Macro, we'll exit and seek that DTMF as the beginning of an
05898     * extension in the Macro's calling context.  If we're not in Macro, then
05899     * we'll simply seek that extension in the calling context.  Previously,
05900     * someone complained about the behavior as it related to the interior of a
05901     * Gosub routine, and the fix (#14011) inadvertently broke FreePBX
05902     * (#14940).  This change should fix both of these situations, but with the
05903     * possible incompatibility that if a single digit extension does not exist
05904     * (but a longer extension COULD have matched), it would have previously
05905     * gone immediately to the "i" extension, but will now need to wait for a
05906     * timeout.
05907     *
05908     * Later, we had to add a flag to disable this workaround, because AGI
05909     * users can EXEC Background and reasonably expect that the DTMF code will
05910     * be returned (see #16434).
05911     */
05912    if (!ast_test_flag(chan, AST_FLAG_DISABLE_WORKAROUNDS) &&
05913          (exten[0] = res) &&
05914          ast_canmatch_extension(chan, args.context, exten, 1, chan->cid.cid_num) &&
05915          !ast_matchmore_extension(chan, args.context, exten, 1, chan->cid.cid_num)) {
05916       snprintf(chan->exten, sizeof(chan->exten), "%c", res);
05917       ast_copy_string(chan->context, args.context, sizeof(chan->context));
05918       chan->priority = 0;
05919       res = 0;
05920    }
05921    return res;
05922 }

static int pbx_builtin_busy ( struct ast_channel ,
void *   
) [static]

Definition at line 5556 of file pbx.c.

References ast_channel::_state, ast_cdr_busy(), AST_CONTROL_BUSY, ast_indicate(), ast_setstate(), AST_STATE_BUSY, AST_STATE_UP, and wait_for_hangup().

05557 {
05558    ast_indicate(chan, AST_CONTROL_BUSY);
05559    /* Don't change state of an UP channel, just indicate
05560       busy in audio */
05561    if (chan->_state != AST_STATE_UP) {
05562       ast_setstate(chan, AST_STATE_BUSY);
05563       ast_cdr_busy(chan->cdr);
05564    }
05565    wait_for_hangup(chan, data);
05566    return -1;
05567 }

static int pbx_builtin_congestion ( struct ast_channel ,
void *   
) [static]

Definition at line 5572 of file pbx.c.

References ast_channel::_state, AST_CONTROL_CONGESTION, ast_indicate(), ast_setstate(), AST_STATE_BUSY, AST_STATE_UP, and wait_for_hangup().

05573 {
05574    ast_indicate(chan, AST_CONTROL_CONGESTION);
05575    /* Don't change state of an UP channel, just indicate
05576       congestion in audio */
05577    if (chan->_state != AST_STATE_UP)
05578       ast_setstate(chan, AST_STATE_BUSY);
05579    wait_for_hangup(chan, data);
05580    return -1;
05581 }

static int pbx_builtin_execiftime ( struct ast_channel ,
void *   
) [static]

Definition at line 5699 of file pbx.c.

References app, ast_build_timing(), ast_check_timing(), ast_log(), ast_strdupa, ast_strlen_zero(), LOG_WARNING, pbx_exec(), pbx_findapp(), s, and S_OR.

05700 {
05701    char *s, *appname;
05702    struct ast_timing timing;
05703    struct ast_app *app;
05704    static const char *usage = "ExecIfTime requires an argument:\n  <time range>|<days of week>|<days of month>|<months>?<appname>[|<appargs>]";
05705 
05706    if (ast_strlen_zero(data)) {
05707       ast_log(LOG_WARNING, "%s\n", usage);
05708       return -1;
05709    }
05710 
05711    appname = ast_strdupa(data);
05712 
05713    s = strsep(&appname,"?");  /* Separate the timerange and application name/data */
05714    if (!appname) {   /* missing application */
05715       ast_log(LOG_WARNING, "%s\n", usage);
05716       return -1;
05717    }
05718 
05719    if (!ast_build_timing(&timing, s)) {
05720       ast_log(LOG_WARNING, "Invalid Time Spec: %s\nCorrect usage: %s\n", s, usage);
05721       return -1;
05722    }
05723 
05724    if (!ast_check_timing(&timing))  /* outside the valid time window, just return */
05725       return 0;
05726 
05727    /* now split appname|appargs */
05728    if ((s = strchr(appname, '|')))
05729       *s++ = '\0';
05730 
05731    if ((app = pbx_findapp(appname))) {
05732       return pbx_exec(chan, app, S_OR(s, ""));
05733    } else {
05734       ast_log(LOG_WARNING, "Cannot locate application %s\n", appname);
05735       return -1;
05736    }
05737 }

static int pbx_builtin_goto ( struct ast_channel chan,
void *  data 
) [static]

Goto

Definition at line 5927 of file pbx.c.

References ast_parseable_goto(), ast_verbose(), ast_channel::context, ast_channel::exten, option_verbose, ast_channel::priority, and VERBOSE_PREFIX_3.

Referenced by pbx_builtin_gotoif(), and pbx_builtin_gotoiftime().

05928 {
05929    int res = ast_parseable_goto(chan, data);
05930    if (!res && (option_verbose > 2))
05931       ast_verbose( VERBOSE_PREFIX_3 "Goto (%s,%s,%d)\n", chan->context,chan->exten, chan->priority+1);
05932    return res;
05933 }

static int pbx_builtin_gotoiftime ( struct ast_channel ,
void *   
) [static]

Definition at line 5673 of file pbx.c.

References ast_build_timing(), ast_check_timing(), ast_log(), ast_strdupa, ast_strlen_zero(), LOG_WARNING, pbx_builtin_goto(), and s.

05674 {
05675    int res=0;
05676    char *s, *ts;
05677    struct ast_timing timing;
05678 
05679    if (ast_strlen_zero(data)) {
05680       ast_log(LOG_WARNING, "GotoIfTime requires an argument:\n  <time range>|<days of week>|<days of month>|<months>?[[context|]extension|]priority\n");
05681       return -1;
05682    }
05683 
05684    ts = s = ast_strdupa(data);
05685 
05686    /* Separate the Goto path */
05687    strsep(&ts,"?");
05688 
05689    /* struct ast_include include contained garbage here, fixed by zeroing it on get_timerange */
05690    if (ast_build_timing(&timing, s) && ast_check_timing(&timing))
05691       res = pbx_builtin_goto(chan, ts);
05692    
05693    return res;
05694 }

static int pbx_builtin_hangup ( struct ast_channel ,
void *   
) [static]

Definition at line 5643 of file pbx.c.

References AST_CAUSE_NORMAL_CLEARING, ast_log(), ast_str2cause(), ast_strlen_zero(), ast_channel::hangupcause, and LOG_NOTICE.

05644 {
05645    if (!ast_strlen_zero(data)) {
05646       int cause;
05647       char *endptr;
05648 
05649       if ((cause = ast_str2cause(data)) > -1) {
05650          chan->hangupcause = cause;
05651          return -1;
05652       }
05653       
05654       cause = strtol((const char *) data, &endptr, 10);
05655       if (cause != 0 || (data != endptr)) {
05656          chan->hangupcause = cause;
05657          return -1;
05658       }
05659          
05660       ast_log(LOG_NOTICE, "Invalid cause given to Hangup(): \"%s\"\n", (char *) data);
05661    }
05662 
05663    if (!chan->hangupcause) {
05664       chan->hangupcause = AST_CAUSE_NORMAL_CLEARING;
05665    }
05666 
05667    return -1;
05668 }

static int pbx_builtin_proceeding ( struct ast_channel ,
void *   
) [static]

Definition at line 5529 of file pbx.c.

References AST_CONTROL_PROCEEDING, and ast_indicate().

05530 {
05531    ast_indicate(chan, AST_CONTROL_PROCEEDING);
05532    return 0;
05533 }

static int pbx_builtin_progress ( struct ast_channel ,
void *   
) [static]

Definition at line 5538 of file pbx.c.

References AST_CONTROL_PROGRESS, and ast_indicate().

05539 {
05540    ast_indicate(chan, AST_CONTROL_PROGRESS);
05541    return 0;
05542 }

static int pbx_builtin_resetcdr ( struct ast_channel ,
void *   
) [static]

Definition at line 5615 of file pbx.c.

References ast_app_parse_options(), ast_cdr_reset(), ast_strdupa, ast_strlen_zero(), ast_channel::cdr, ast_flags::flags, and resetcdr_opts.

05616 {
05617    char *args;
05618    struct ast_flags flags = { 0 };
05619 
05620    if (!ast_strlen_zero(data)) {
05621       args = ast_strdupa(data);
05622       ast_app_parse_options(resetcdr_opts, &flags, NULL, args);
05623    }
05624 
05625    ast_cdr_reset(chan->cdr, &flags);
05626 
05627    return 0;
05628 }

static int pbx_builtin_ringing ( struct ast_channel ,
void *   
) [static]

Definition at line 5547 of file pbx.c.

References AST_CONTROL_RINGING, and ast_indicate().

05548 {
05549    ast_indicate(chan, AST_CONTROL_RINGING);
05550    return 0;
05551 }

static int pbx_builtin_setamaflags ( struct ast_channel ,
void *   
) [static]

Definition at line 5633 of file pbx.c.

References ast_cdr_setamaflags().

05634 {
05635    /* Copy the AMA Flags as specified */
05636    ast_cdr_setamaflags(chan, data ? data : "");
05637    return 0;
05638 }

static int pbx_builtin_wait ( struct ast_channel ,
void *   
) [static]

Definition at line 5742 of file pbx.c.

References ast_safe_sleep(), and s.

05743 {
05744    double s;
05745    int ms;
05746 
05747    /* Wait for "n" seconds */
05748    if (data && (s = atof(data)) > 0) {
05749       ms = s * 1000.0;
05750       return ast_safe_sleep(chan, ms);
05751    }
05752    return 0;
05753 }

static int pbx_builtin_waitexten ( struct ast_channel ,
void *   
) [static]

Definition at line 5758 of file pbx.c.

References AST_APP_ARG, ast_app_parse_options(), AST_CONTROL_HOLD, AST_CONTROL_UNHOLD, AST_DECLARE_APP_ARGS, ast_exists_extension(), ast_indicate(), ast_indicate_data(), ast_log(), AST_SOFTHANGUP_TIMEOUT, AST_STANDARD_APP_ARGS, ast_strdupa, ast_strlen_zero(), ast_test_flag, ast_verbose(), ast_waitfordigit(), ast_flags::flags, LOG_WARNING, option_verbose, parse(), S_OR, set_ext_pri(), VERBOSE_PREFIX_3, WAITEXTEN_MOH, and waitexten_opts.

05759 {
05760    int ms, res;
05761    double sec;
05762    struct ast_flags flags = {0};
05763    char *opts[1] = { NULL };
05764    char *parse;
05765    AST_DECLARE_APP_ARGS(args,
05766       AST_APP_ARG(timeout);
05767       AST_APP_ARG(options);
05768    );
05769 
05770    if (!ast_strlen_zero(data)) {
05771       parse = ast_strdupa(data);
05772       AST_STANDARD_APP_ARGS(args, parse);
05773    } else
05774       memset(&args, 0, sizeof(args));
05775 
05776    if (args.options)
05777       ast_app_parse_options(waitexten_opts, &flags, opts, args.options);
05778    
05779    if (ast_test_flag(&flags, WAITEXTEN_MOH) && !opts[0] ) {
05780       ast_log(LOG_WARNING, "The 'm' option has been specified for WaitExten without a class.\n"); 
05781    } else if (ast_test_flag(&flags, WAITEXTEN_MOH))
05782       ast_indicate_data(chan, AST_CONTROL_HOLD, S_OR(opts[0], NULL), strlen(opts[0]));
05783 
05784    /* Wait for "n" seconds */
05785    if (args.timeout && (sec = atof(args.timeout)) > 0.0)
05786       ms = 1000 * sec;
05787    else if (chan->pbx)
05788       ms = chan->pbx->rtimeout * 1000;
05789    else
05790       ms = 10000;
05791    res = ast_waitfordigit(chan, ms);
05792    if (!res) {
05793       if (ast_exists_extension(chan, chan->context, chan->exten, chan->priority + 1, chan->cid.cid_num)) {
05794          if (option_verbose > 2)
05795             ast_verbose(VERBOSE_PREFIX_3 "Timeout on %s, continuing...\n", chan->name);
05796       } else if (chan->_softhangup & AST_SOFTHANGUP_TIMEOUT) {
05797          if (option_verbose > 2)
05798             ast_verbose(VERBOSE_PREFIX_3 "Call timeout on %s, checking for 'T'\n", chan->name);
05799          res = -1;
05800       } else if (ast_exists_extension(chan, chan->context, "t", 1, chan->cid.cid_num)) {
05801          if (option_verbose > 2)
05802             ast_verbose(VERBOSE_PREFIX_3 "Timeout on %s, going to 't'\n", chan->name);
05803          set_ext_pri(chan, "t", 0); /* 0 will become 1, next time through the loop */
05804       } else {
05805          ast_log(LOG_WARNING, "Timeout but no rule 't' in context '%s'\n", chan->context);
05806          res = -1;
05807       }
05808    }
05809 
05810    if (ast_test_flag(&flags, WAITEXTEN_MOH))
05811       ast_indicate(chan, AST_CONTROL_UNHOLD);
05812 
05813    return res;
05814 }


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