Asterisk doesn't need STUN/TURN in rtp.conf for this setup because: - It already knows its public IP via external_media_address in pjsip.conf - Its RTP ports are port-forwarded, so host ICE candidates are sufficient - stunaddr/turnaddr caused STUN gather timeouts (~27s) on every call, whether pointing at the FQDN (DNS TTL=0 bug) or localhost (UDP timeout) coturn is for SIP *clients* behind strict NAT — they configure TURN in their own app settings, independently of Asterisk's rtp.conf. ICE support remains enabled so Asterisk participates in ICE negotiation. https://claude.ai/code/session_01KWVtEt9MmZdywcu7WmgchX