app_stack is necessary to make work asterisk and freepbx but can be loaded using command line after asterisk start asterisk*CLI> module load app_stack.so Loaded app_stack.so asterisk*CLI> module show Module Description Use Count res_adsi ADSI Resource 0 pbx_config.so Text Extension Configuration 0 chan_local.so Local Proxy Channel (Note: used internal 0 res_stun_monitor.so STUN Network Monitor 0 res_smdi.so Simplified Message Desk Interface (SMDI) 0 res_srtp.so Secure RTP (SRTP) 0 res_ael_share.so share-able code for AEL 0 res_speech.so Generic Speech Recognition API 0 res_calendar.so Asterisk Calendar integration 1 res_odbc.so ODBC resource 0 res_fax.so Generic FAX Applications 1 res_jabber.so AJI - Asterisk Jabber Interface 0 res_crypto.so Cryptographic Digital Signatures 0 res_monitor.so Call Monitoring Resource 0 format_wav.so Microsoft WAV/WAV16 format (8kHz/16kHz S 0 format_pcm.so Raw/Sun uLaw/ALaw 8KHz (PCM,PCMA,AU), G. 0 format_mp3.so MP3 format [Any rate but 8000hz mono is 0 res_musiconhold.so Music On Hold Resource 0 cdr_manager.so Asterisk Manager Interface CDR Backend 0 bridge_softmix.so Multi-party software based channel mixin 0 pbx_loopback.so Loopback Switch 0 res_config_pgsql.so PostgreSQL RealTime Configuration Driver 0 app_nbscat.so Silly NBS Stream Application 0 codec_ulaw.so mu-Law Coder/Decoder 0 app_waitforsilence.so Wait For Silence 0 func_lock.so Dialplan mutexes 0 res_timing_timerfd.so Timerfd Timing Interface 1 pbx_lua.so Lua PBX Switch 0 app_sendtext.so Send Text Applications 0 func_strings.so String handling dialplan functions 0 app_channelredirect.so Redirects a given channel to a dialplan 0 res_calendar_caldav.so Asterisk CalDAV Calendar Integration 0 res_clioriginate.so Call origination and redirection from th 0 func_iconv.so Charset conversions 0 res_config_ldap.so LDAP realtime interface 0 func_pitchshift.so Audio Effects Dialplan Functions 0 app_mixmonitor.so Mixed Audio Monitoring Application 0 app_followme.so Find-Me/Follow-Me Application 0 res_calendar_exchange.so Asterisk MS Exchange Calendar Integratio 0 app_dumpchan.so Dump Info About The Calling Channel 0 res_mutestream.so Mute audio stream resources 0 func_cdr.so Call Detail Record (CDR) dialplan functi 0 app_record.so Trivial Record Application 0 func_vmcount.so Indicator for whether a voice mailbox ha 0 chan_iax2.so Inter Asterisk eXchange (Ver 2) 0 format_g719.so ITU G.719 0 app_confbridge.so Conference Bridge Application 0 app_milliwatt.so Digital Milliwatt (mu-law) Test Applicat 0 codec_dahdi.so Generic DAHDI Transcoder Codec Translato 0 app_dahdibarge.so Barge in on DAHDI channel application 0 func_channel.so Channel information dialplan functions 0 format_h264.so Raw H.264 data 0 cel_custom.so Customizable Comma Separated Values CEL 0 format_ilbc.so Raw iLBC data 0 app_originate.so Originate call 0 app_externalivr.so External IVR Interface Application 0 func_sprintf.so SPRINTF dialplan function 0 cdr_sqlite.so SQLite CDR Backend 0 cdr_syslog.so Customizable syslog CDR Backend 0 res_clialiases.so CLI Aliases 0 codec_a_mu.so A-law and Mulaw direct Coder/Decoder 0 func_math.so Mathematical dialplan function 0 func_frame_trace.so Frame Trace for internal ast_frame debug 0 app_ices.so Encode and Stream via icecast and ices 0 app_system.so Generic System() application 0 codec_adpcm.so Adaptive Differential PCM Coder/Decoder 0 app_playback.so Sound File Playback Application 0 res_realtime.so Realtime Data Lookup/Rewrite 0 res_config_curl.so Realtime Curl configuration 0 cdr_adaptive_odbc.so Adaptive ODBC CDR backend 0 format_sln.so Raw Signed Linear Audio support (SLN) 0 chan_unistim.so UNISTIM Protocol (USTM) 0 format_siren14.so ITU G.722.1 Annex C (Siren14, licensed f 0 cdr_custom.so Customizable Comma Separated Values CDR 0 app_sms.so SMS/PSTN handler 0 func_rand.so Random number dialplan function 0 app_db.so Database Access Functions 0 func_sysinfo.so System information related functions 0 app_read.so Read Variable Application 0 chan_dahdi.so DAHDI Telephony Driver w/PRI & SS7 & MFC 0 func_md5.so MD5 digest dialplan functions 0 app_jack.so JACK Interface 0 codec_g726.so ITU G.726-32kbps G726 Transcoder 0 cdr_tds.so FreeTDS CDR Backend 0 chan_skinny.so Skinny Client Control Protocol (Skinny) 0 cdr_pgsql.so PostgreSQL CDR Backend 0 chan_bridge.so Bridge Interaction Channel 0 res_timing_dahdi.so DAHDI Timing Interface 0 func_module.so Checks if Asterisk module is loaded in m 0 app_dictate.so Virtual Dictation Machine 0 res_config_sqlite.so Realtime SQLite configuration 0 func_speex.so Noise reduction and Automatic Gain Contr 0 format_siren7.so ITU G.722.1 (Siren7, licensed from Polyc 0 func_version.so Get Asterisk Version/Build Info 0 app_flash.so Flash channel application 0 app_festival.so Simple Festival Interface 0 app_softhangup.so Hangs up the requested channel 0 codec_gsm.so GSM Coder/Decoder 0 bridge_builtin_features.so Built in bridging features 1 app_authenticate.so Authentication Application 0 app_url.so Send URL Applications 0 app_voicemail.so Comedian Mail (Voicemail System) 0 app_celgenuserevent.so Generate an User-Defined CEL event 0 app_meetme.so MeetMe conference bridge 0 cel_radius.so RADIUS CEL Backend 0 res_convert.so File format conversion CLI command 0 format_h263.so Raw H.263 data 0 func_cut.so Cut out information from a string 0 func_shell.so Returns the output of a shell command 0 app_page.so Page Multiple Phones 0 app_macro.so Extension Macros 0 app_exec.so Executes dialplan applications 0 codec_resample.so SLIN Resampling Codec 0 res_security_log.so Security Event Logging 0 app_privacy.so Require phone number to be entered, if n 0 func_uri.so URI encode/decode dialplan functions 0 cel_pgsql.so PostgreSQL CEL Backend 0 app_mp3.so Silly MP3 Application 0 func_callerid.so Party ID related dialplan functions (Cal 0 res_agi.so Asterisk Gateway Interface (AGI) 1 cel_tds.so FreeTDS CEL Backend 0 app_saycountpl.so Say polish counting words 0 func_curl.so Load external URL 0 app_getcpeid.so Get ADSI CPE ID 0 res_curl.so cURL Resource Module 0 func_sha1.so SHA-1 computation dialplan function 0 format_gsm.so Raw GSM data 0 app_queue.so True Call Queueing 0 func_logic.so Logical dialplan functions 0 app_test.so Interface Test Application 0 app_talkdetect.so Playback with Talk Detection 0 res_rtp_multicast.so Multicast RTP Engine 0 res_rtp_asterisk.so Asterisk RTP Stack 0 cdr_odbc.so ODBC CDR Backend 0 codec_lpc10.so LPC10 2.4kbps Coder/Decoder 0 app_userevent.so Custom User Event Application 0 func_base64.so base64 encode/decode dialplan functions 0 app_waitforring.so Waits until first ring after time 0 bridge_multiplexed.so Multiplexed two channel bridging module 0 chan_agent.so Agent Proxy Channel 0 app_dial.so Dialing Application 0 res_snmp.so SNMP [Sub]Agent for Asterisk 0 app_mysql.so Simple Mysql Interface 0 app_amd.so Answering Machine Detection Application 0 pbx_dundi.so Distributed Universal Number Discovery ( 0 chan_vpb.so Voicetronix API driver 0 format_ogg_vorbis.so OGG/Vorbis audio 0 func_devstate.so Gets or sets a device state in the dialp 0 func_global.so Variable dialplan functions 0 func_audiohookinherit.so Audiohook inheritance function 0 func_db.so Database (astdb) related dialplan functi 0 func_odbc.so ODBC lookups 0 cdr_radius.so RADIUS CDR Backend 0 app_echo.so Simple Echo Application 0 func_srv.so SRV related dialplan functions 0 res_timing_pthread.so pthread Timing Interface 0 codec_alaw.so A-law Coder/Decoder 0 app_zapateller.so Block Telemarketers with Special Informa 0 func_env.so Environment/filesystem dialplan function 0 app_chanspy.so Listen to the audio of an active channel 0 app_senddtmf.so Send DTMF digits Application 0 chan_ooh323.so Objective Systems H323 Channel 0 app_cdr.so Tell Asterisk to not maintain a CDR for 0 cel_odbc.so ODBC CEL backend 0 app_transfer.so Transfers a caller to another extension 0 chan_gtalk.so Gtalk Channel Driver 0 app_alarmreceiver.so Alarm Receiver for Asterisk 0 pbx_ael.so Asterisk Extension Language Compiler 0 func_realtime.so Read/Write/Store/Destroy values from a R 0 app_while.so While Loops and Conditional Execution 0 res_http_post.so HTTP POST support 0 func_config.so Asterisk configuration file variable acc 0 func_volume.so Technology independent volume control 0 app_directory.so Extension Directory 0 app_sayunixtime.so Say time 0 func_dialgroup.so Dialgroup dialplan function 0 pbx_realtime.so Realtime Switch 0 app_directed_pickup.so Directed Call Pickup Application 0 func_blacklist.so Look up Caller*ID name/number from black 0 func_dialplan.so Dialplan Context/Extension/Priority Chec 0 chan_sip.so Session Initiation Protocol (SIP) 0 res_calendar_icalendar.so Asterisk iCalendar .ics file integration 0 res_phoneprov.so HTTP Phone Provisioning 0 format_g723.so G.723.1 Simple Timestamp File Format 0 app_controlplayback.so Control Playback Application 0 codec_g722.so ITU G.722-64kbps G722 Transcoder 0 res_calendar_ews.so Asterisk MS Exchange Web Service Calenda 0 app_waituntil.so Wait until specified time 0 func_callcompletion.so Call Control Configuration Function 0 cdr_csv.so Comma Separated Values CDR Backend 0 app_verbose.so Send verbose output 0 pbx_spool.so Outgoing Spool Support 0 res_config_mysql.so MySQL RealTime Configuration Driver 0 chan_phone.so Linux Telephony API Support 0 format_vox.so Dialogic VOX (ADPCM) File Format 0 func_enum.so ENUM related dialplan functions 0 func_aes.so AES dialplan functions 0 func_extstate.so Gets an extension's state in the dialpla 0 app_adsiprog.so Asterisk ADSI Programming Application 0 func_timeout.so Channel timeout dialplan functions 0 app_minivm.so Mini VoiceMail (A minimal Voicemail e-ma 0 format_g726.so Raw G.726 (16/24/32/40kbps) data 0 res_ais.so SAForum AIS 0 app_dahdiras.so DAHDI ISDN Remote Access Server 0 res_config_odbc.so Realtime ODBC configuration 0 format_jpeg.so jpeg (joint picture experts group) image 0 chan_jingle.so Jingle Channel Driver 0 func_groupcount.so Channel group dialplan functions 0 app_chanisavail.so Check channel availability 0 cdr_mysql.so MySQL CDR Backend 0 bridge_simple.so Simple two channel bridging module 0 format_sln16.so Raw Signed Linear 16KHz Audio support (S 0 app_morsecode.so Morse code 0 codec_speex.so Speex Coder/Decoder 0 format_g729.so Raw G.729 data 0 format_wav_gsm.so Microsoft WAV format (Proprietary GSM) 0 app_readfile.so Stores output of file into a variable 0 chan_multicast_rtp.so Multicast RTP Paging Channel 0 app_setcallerid.so Set CallerID Presentation Application 0 app_readexten.so Read and evaluate extension validity 0 app_disa.so DISA (Direct Inward System Access) Appli 0 cel_manager.so Asterisk Manager Interface CEL Backend 0 app_parkandannounce.so Call Parking and Announce Application 0 app_forkcdr.so Fork The CDR into 2 separate entities 0 res_fax_spandsp.so Spandsp G.711 and T.38 FAX Technologies 0 chan_h323.so The NuFone Network's OpenH323 Channel Dr 0 app_image.so Image Transmission Application 0 app_speech_utils.so Dialplan Speech Applications 0 res_limit.so Resource limits 0 app_playtones.so Playtones Application 0 app_stack.so Dialplan subroutines (Gosub, Return, etc 0 231 modules loaded may be it is a preload or load order issue in modules.conf ?