[Asterisk-Users] Maximum retries exceeded on call

[Joel Jn-Francois]

I see this message in my asterisk log sometimes.  Can someone explain to me 
what this means and how to correct the problem?

May 17 13:38:33 WARNING[13503]: chan_sip.c:694 retrans_pkt: Maximum retries 
exceeded on call 795fcf0c6
b267dda at 10.0.0.6 for seqno 18950 (Non-critical Response)
May 17 13:39:12 WARNING[13503]: chan_sip.c:694 retrans_pkt: Maximum retries 
exceeded on call 0ec0538d9
ae6ac0c at 10.0.0.6 for seqno 40146 (Non-critical Response)
May 17 13:39:19 WARNING[13503]: chan_sip.c:694 retrans_pkt: Maximum retries 
exceeded on call 0ec0538d9
ae6ac0c at 10.0.0.6 for seqno 40147 (Non-critical Response)

Thanks