Sip xlite Maximum retries exceeded on transmission

Here my problem I tied to post many times with no answer pleae hleo

23 13:39:07 WARNING[4090]: chan_sip.c:1228 retrans_pkt: Maximum retries exceeded on transmission d53eb41be7753952Mzc1ZWZkOWEzNjhiMDk4MDM3YjVmZjg0MTYxZmM3ZjE. for seqno 2 (Critical Response)
Apr 23 13:39:07 WARNING[4090]: chan_sip.c:1245 retrans_pkt: Hanging up call d53eb41be7753952Mzc1ZWZkOWEzNjhiMDk4MDM3YjVmZjg0MTYxZmM3ZjE. - no reply to our critical packet.

the call drop after 20 second