[asterisk-users] SRTP unprotect failed ...

[hw]

Hi,

I'm getting messages like


res_srtp.c:395 ast_srtp_unprotect: SRTP unprotect failed with replay check failed (index too old), retrying
  == SRTP unprotect failed on SSRC 576693764 because of authentication failure 10
  == SRTP unprotect failed on SSRC 576693764 because of authentication failure 160
[...]


... after a couple minutes during voice calls after which the connection is being
aborted.  It seems that not all connections are affected but only a few, though
that would need further verification.

Is this a bug, or due to a bad internet connection (maybe packet loss?)?
Can I do something to look into this?

asterisk -V
Asterisk 16.4.0