asterisk users - Sep 2003 - RV: WARNING[5126] Maximum retries exceeded on call

Hello

 	I'm tryng to install Asterisk and by now I got a first congfiguration
working
 	(0ne PBX box and 2 X-lite phone communicating with each other)

 	The problem now is that I keep this annoying message every time:

  WARNING[5126]: File chan_sip.c, Line 435 (retrans_pkt): Maximum retries
exceeded on call
 43c827415f83584c0c9dc15b03ed6924@10.1.1.1 for seqno 102 (Request)

 	Do you have a clue?

 	My bet is like it is trying to send a message to a mailbox that doesn't
exist
 	Am I right??

 	How can I cancel this and stop this from retryng.




 PS:	I made my configuration to work as stated in this
 ONLamp.com article by John Todd:
  	http://www.onlamp.com/lpt/a/3956

 	And also made the corrections in:

http://www.onlamp.com/pub/a/onlamp/2003/07/03/asterisk.html?page=last#thread