where can I find more details about nua? tport_wakeup_pri(0xa7c160): events IN tport_recv_event(0xa7c160) tport_recv_iovec(0xa7c160) msg 0x7f18080037b0 from (udp/10.248.13.3:5060) has 487 bytes, veclen = 1 tport_deliver(0xa7c160): msg 0x7f18080037b0 (487 bytes) from udp/ 23.21.230.74:5060/sip next=(nil) nta: received MESSAGE sip:+15032721367@50.12.112.39 SIP/2.0 (CSeq 102) nta: Via check: received=23.21.230.74 nta: canonizing sip:+15032721367@50.12.112.39 with contact nta: MESSAGE (102) going to a default leg nua: nua_stack_process_request: entering nua: nh_create: entering nua: nh_create_handle: entering nua: nua_stack_set_params: entering soa_clone(static::0xa69c50, 0xa69490, 0x7f17f80f5180) called soa_set_params(static::0x7f17f80f52a0, ...) called nta_leg_tcreate(0x7f17f8088d30) tport_tsend(0xa7c160) tpn = UDP/23.211.230.74:5060 tport_resolve addrinfo = 23.211.230.74:5060 tport_by_addrinfo(0xa7c160): not found by name UDP/23.211.230.74:5060 tport_vsend(0xa7c160): 539 bytes of 539 to udp/23.211.230.74:5060 tport_vsend returned 539 nta: sent 200 OK for MESSAGE (102) nua(0x7f17f80f5180): event i_message 200 OK nua: nua_application_event: entering nua: nua_handle_magic: entering nua: nua_respond: entering nua(0x7f17f80f5180): sent signal r_respond nua: nua_handle_magic: entering nua: nua_handle_destroy: entering nua(0x7f17f80f5180): sent signal r_destroy nua(0x7f17f80f5180): recv signal r_respond 202 Accepted nua(0x7f17f80f5180): event i_error 500 Responding to a Non-Existing Request nua(0x7f17f80f5180): recv signal r_destroy nta_leg_destroy(0x7f17f8088d30) soa_destroy(static::0x7f17f80f52a0) called nta: timer J fired, terminate 200 response incoming_reclaim_all((nil), (nil), 0x7f180752ec40) nta_incoming_timer: 0/0 resent, 0/0 tout, 1/2 term, 1/2 free nta: timer set next to 14002 ms tport_wakeup_pri(0xa7c160): events IN tport_recv_event(0xa7c160) tport_recv_iovec(0xa7c160) msg 0x7f1808147e10 from (udp/10.248.13.3:5060) has 4 bytes, veclen = 1 tport_deliver(0xa7c160): bad msg 0x7f1808147e10 (4 bytes) from udp/ 115.11.5.34:5060/sip next=(nil) nta: timer J fired, terminate 200 response incoming_reclaim_all((nil), (nil), 0x7f180752ec40) nta_incoming_timer: 0/0 resent, 0/0 tout, 1/1 term, 1/1 free nta: timer not set tport_wakeup_pri(0xa7c160): events IN tport_recv_event(0xa7c160) tport_recv_iovec(0xa7c160) msg 0x7f1808147e10 from (udp/10.248.13.3:5060) has 4 bytes, veclen = 1 tport_deliver(0xa7c160): bad msg 0x7f1808147e10 (4 bytes) from udp/ 115.11.5.34:5060/sip next=(nil) freeswitch@internal> Thanks, Bala