Maximum retries exceeded on call

When i start asterisk CLI i’m getting spammed with log-messages loking like this (every 10-15 seconds):

Jun 21 10:48:00 WARNING[12152]: chan_sip.c:694 retrans_pkt: Maximum retries exceeded on call 3e6b714f0f3c39e9384c383e0d330218@192.168.0.10 for seqno 3204 (Critical Request)

Anyone knows why? Is it because of some configuration issue?

Edit: i can place and receive SIP-calls