FreePBX Distro Features above stock Asterisk
Patches to Asterisk Source
ASTERISK 11
Add patch for queue pause hints in Asterisk 11.  Without this their is no way to have a BLF subscribe to your current pause state in app_queue. (Standard in Asterisk 13+)
Add patch for new DAHDI Plug and Play that was put into Asterisk 12 that has been backported into our Asterisk 11.6+ or greater release. (Standard in Asterisk 13+)
Voicemail BLF Buttons with res_mwi_blf.so-Â Subscribe a BLF button to Monitor a Voicemail Box
Add libwat drivers into asterisk to support the Sangoma GSM cards. (Remove from Asterisk 13+)
Add support for Sangoma Commercial Lyra Answering Machine Detection (AMD) software into Asterisk (Removed from Asterisk 13+)
Daily log rotation of Asterisk Logs with a 7 day storage
Add support for multi email addresses to be defined for voicemail to email. (Standard in Asterisk 13+)
Add support for app_queue lazymembers
ASTERISK 13
Voicemail BLF Buttons with res_mwi_blf.so- Subscribe a BLF button to Monitor a Voicemail Box
Daily log rotation of Asterisk Logs with a 7 day storage
Add support for app_queue lazymembers
Increase AST_PBX_MAX_STACK from 128 to 512 (Sangoma 7 Distro only)
ASTERISK 15
Voicemail BLF Buttons with res_mwi_blf.so- Subscribe a BLF button to Monitor a Voicemail Box
Daily log rotation of Asterisk Logs with a 7 day storage
Add support for app_queue lazymembers
Increase AST_PBX_MAX_STACK from 128 to 512Â (Sangoma 7 Distro only)
Patches to DAHDI
DAHDI Support added for-Â Click here on how to setup and manage DAHDI cards.
Rhino Card and Firmware Support
Replace MG2 software echo cancellation with oslec for better performance when using software echo cancellation
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Add on Compile Features in Asterisk or DAHDI
SpanDSP for Faxing support- Click here for more information on using faxingÂ
Wanpipe installed for Sangoma Cards with support to run in DAHDI mode-Â Click here on how to setup and manage sangoma cards
ODBC setup for Linux and Asterisk with support for CEL Logging
Flite for Text to Speech complied
Asterisk AQMP - An Asterisk module to connect and publish to an AMQP server - GitHub - wazo-platform/wazo-res-amqp: An Asterisk module to connect and publish to an AMQP server  (Sangoma Distro 7 only)