An incoming call to Asterisk is interrupted, what could be?

Question

Asterisk

Good afternoon guys. The problem is the following, recently problems with incoming calls began,
aster in the logs
WARNING[2048]: chan_sip.c:4259 retrans_pkt: Retransmission timeout reached on transmission [email protected] for seqno 102 (Critical Response) -- See https: //wiki.asterisk.org/wiki/display/AST/SIP+Ret...
Packet timed out after 12996ms with no response
[Aug 11 19:09:25] WARNING[2048]: chan_sip.c:4288 retrans_pkt: Hanging up call de91b37f- 2e947633 @xxxx- no reply to our critical packet (see https ://wiki.asterisk.org/wiki/display/AST/SIP+Ret... at that

Answer 1

the operator either does not see your signaling or ignores it
, you need to look at the headers, but first in the operator's peer
directmedia=no