[Freeswitch-users] Sending t38 No-Signal packets while receiving a fax page with mod_spandsp

Anyone know if freeswitch can be made to send periodic No-signal packets while receiving a page data pump? Carrier's SBC is hitting an RTP timer during long page transfers because freeswitch/spandsp is completely silent while receiving a page. Other T38 switches I've noticed will send a No-Signal packet every 300ms seconds as a keep-alive. This can be seen in the top screenshot below. Lower one is freeswitch receiving a page silently. [image: image.png] [image: image.png]